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CompTia Network+ > Network+ N10-007 > Flashcards

Network+ N10-007 Flashcards

1
Q

3G

A

Third-generation wireless data standard for cell phones and other mobile devices. 3G matured over time until Evolved High-Speed Packet Access (HSPA+) became the final wireless 3G data standard. It transferred at theoretical maximum speeds up to 168 megabits per second (Mbps), although real-world implementations rarely passed 10 Mbps.

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2
Q

4G

A

Most popularly implemented as Long Term Evolution (LTE), a wireless data standard with theoretical download speeds of 300 Mbps and upload speeds of 75 Mbps.

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3
Q

4to6

A

Internet connectivity technology that encapsulates IPv4 traffic into an IPv6 tunnel to get to an IPv6-capable router.

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4
Q

6in4

A

An IPv6 tunneling protocol that doesn’t require a tunnel broker. It is generally used to directly connect two routers because it normally requires a public IPv4 address.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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5
Q

6to4

A

An IPv6 tunneling protocol that doesn’t require a tunnel broker. It is generally used to directly connect two routers because it normally requires a public IPv4 address.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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6
Q

8 Position 8 Contact (8P8C)

A

Four-pair connector used on the end of network cable. Erroneously referred to as an RJ-45 connector.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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7
Q

10 Gigabit Ethernet (10 GbE)

A

A very fast Ethernet designation, with a number of fiber-optic and copper standards.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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8
Q

10Base2

A

The last true bus-standard network where nodes connected to a common, shared length of coaxial cable.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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9
Q

10BaseFL

A

Fiber-optic implementation of Ethernet that runs at 10 Mbps using baseband signaling. Maximum segment length is 2 km.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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10
Q

10BaseT

A

An Ethernet LAN designed to run on UTP cabling. Runs at 10 Mbps and uses baseband signaling. Maximum length for the cabling between the NIC and the hub (or the switch, the repeater, and so forth) is 100 m.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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11
Q

10GBaseER/10GBaseEW

A

A 10 GbE standard using 1550-nm single-mode fiber. Maximum cable length up to 40 km.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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12
Q

10GBaseLR/10GBaseLW

A

A 10 GbE standard using 1310-nm single-mode fiber. Maximum cable length up to 10 km.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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13
Q

10GBaseSR/10GBaseSW

A

A 10 GbE standard using 850-nm multimode fiber. Maximum cable length up to 300 m.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 787). McGraw-Hill Education. Kindle Edition.

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14
Q

10GBaseT

A

A 10 GbE standard designed to run on Cat 6a UTP cabling. Maximum cable length of 100 m.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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15
Q

66 block

A

Patch panel used in telephone networks; displaced by 110 blocks in networking.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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16
Q

100BaseFX

A

An Ethernet LAN designed to run on fiber-optic cabling. Runs at 100 Mbps and uses baseband signaling. Maximum cable length is 400 m for half-duplex and 2 km for full-duplex.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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17
Q

100BaseT

A

An Ethernet LAN designed to run on UTP cabling. Runs at 100 Mbps, uses baseband signaling, and uses two pairs of wires on Cat 5 or better cabling.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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18
Q

100BaseT4

A

An Ethernet LAN designed to run on UTP cabling. Runs at 100 Mbps and uses four-pair Cat 3 or better cabling. Made obsolete by 100BaseT.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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19
Q

100BaseTX

A

The technically accurate but little-used name for 100BaseT.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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20
Q

110 block

A

Also known as a 110-punchdown block, a connection gridwork used to link UTP and STP cables behind an RJ-45 patch panel.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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21
Q

110-punchdown block

A

The most common connection used on the back of an RJ-45 jack and patch panels.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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22
Q

802 Committee

A

The IEEE committee responsible for all Ethernet standards.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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23
Q

802.1X

A

A port-authentication network access control mechanism for networks.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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24
Q

802.3ab

A

The IEEE standard for 1000BaseT.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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25
Q

802.3z

A

The umbrella IEEE standard for all versions of Gigabit Ethernet other than 1000BaseT.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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26
Q

802.11a

A

A wireless standard that operates in the frequency range of 5 GHz and offers throughput of up to 54 Mbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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27
Q

802.11ac

A

A wireless standard that operates in the frequency range of 5 GHz and offers throughput of up to 1 Gbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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28
Q

802.11a-ht

A

Along with the corresponding 802.11g-ht standard, technical terms for mixed mode 802.11a/802.11g operation. In mixed mode, both technologies are simultaneously supported.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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29
Q

802.11b

A

The first popular wireless standard, operates in the frequency range of 2.4 GHz and offers throughput of up to 11 Mbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 788). McGraw-Hill Education. Kindle Edition.

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30
Q

802.11g

A

Older wireless standard that operates on the 2.4-GHz band with a maximum throughput of 54 Mbps. Superseded by 802.11n.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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31
Q

802.11g-ht

A

Along with the corresponding 802.11a-ht standard, technical terms for mixed mode 802.11a/802.11g operation. In mixed mode, both technologies are simultaneously supported.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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32
Q

802.11i

A

A wireless standard that added security features.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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33
Q

802.11n

A

An 802.11 standard that increases transfer speeds and adds support for multiple in/multiple out (MIMO) by using multiple antennas. 802.11n can operate on either the 2.4- or 5-GHz frequency band and has a maximum throughput of 400 Mbps. Superseded by 802.11ac.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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34
Q

1000BaseCX

A

A Gigabit Ethernet standard using unique copper cabling, with a 25-m maximum cable distance.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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35
Q

1000BaseLX

A

A Gigabit Ethernet standard using single-mode fiber cabling, with a 5-km maximum cable distance.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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36
Q

1000BaseSX

A

A Gigabit Ethernet standard using multimode fiber cabling, with a 220- to 500-m maximum cable distance.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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37
Q

1000BaseT

A

A Gigabit Ethernet standard using Cat 5e/6 UTP cabling, with a 100-m maximum cable distance.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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38
Q

1000BaseTX

A

Short-lived gigabit-over-UTP standard from TIA/EIA. Considered a competitor to 1000BaseT, it was simpler to implement but required the use of Cat 6 cable.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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39
Q

1000BaseX

A

An umbrella Gigabit Ethernet standard. Also known as 802.3z. Comprises all Gigabit standards with the exception of 1000BaseT, which is under the 802.3ab standard.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 789). McGraw-Hill Education. Kindle Edition.

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40
Q

“A” Records

A

DNS records that map host names to their IPv4 addresses.

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41
Q

“AAAA” Records

A

DNS records that map host names to their IPv6 addresses.

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42
Q

Absorption

A

Quality of some building materials (such as brick, sheetrock, and wood) to reduce or eliminate a Wi-Fi signal.

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43
Q

Acceptable Use Policy

A

A document that defines what a person may and may not do on an organization’s computers and networks.

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44
Q

Access Control

A

All-encompassing term that defines the degree of permission granted to use a particular resource. That resource may be anything from a switch port to a particular file to a physical door within a building.

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45
Q

Access Control List (ACL)

A

A clearly defined list of permissions that specifies what actions an authenticated user may perform on a shared resource.

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46
Q

Access Control Server (ACS)

A

Cisco program/process/server that makes the decision to admit or deny a node based on posture assessment. From there, the ACS directs the edge access device to allow a connection or to implement a denial or redirect.

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47
Q

Access Port

A

Regular port in a switch that has been configured as part of a VLAN. Access ports are ports that hosts connect to. They are the opposite of a trunk port, which is only connected to a trunk port on another switch.

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48
Q

Active Directory

A

A form of directory service used in networks with Windows servers. Creates an organization of related computers that share one or more Windows domains.

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49
Q

Activity Light

A

An LED on a NIC, hub, or switch that blinks rapidly to show data transfers over the network.

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50
Q

Ad Hoc Mode

A

A wireless networking mode where each node is in direct contact with every other node in a decentralized free-for-all. Ad hoc mode is similar to the mesh topology.

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51
Q

Adaptive Networking Technology (ANT+)

A

A low-speed, low-power networking technology; used in place of Bluetooth for connecting devices, such as smart phones and exercise machines.

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52
Q

Address Resolution Protocol (ARP)

A

A protocol in the TCP/IP suite used with the command-line utility of the same name to determine the MAC address that corresponds to a particular IP address.

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53
Q

Administrative Accounts

A

Specialized user accounts that have been granted sufficient access rights and authority to manage specified administrative tasks. Some administrative accounts exist as a default of the system and have all authority throughout the system. Others must be explicitly assigned the necessary powers to administer given resources.

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54
Q

Advanced Encryption Standard

A

A block cipher created in the late 1990s that uses a 128-bit block size and a 128-, 192-, or 256-bit key size. Practically uncrackable.

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55
Q

Adware

A

A program that monitors the types of Web sites you frequent and uses that information to generate targeted advertisements, usually pop-up windows.

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56
Q

Agent

A

In terms of posture assessment, refers to software that runs within a client and reports the client’s security characteristics to an access control server to be approved or denied entry to a system.

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57
Q

Agent-less

A

In terms of posture assessment, refers to a client that has its posture checked and presented by non-permanent software, such as a Web app program, that executes as part of the connection process. Agent-less software does not run directly within the client but is run on behalf of the client.

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58
Q

Aggregation

A

A router hierarchy in which every router underneath a higher router always uses a subnet of that router’s existing routes.

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59
Q

Air Gap

A

The act of physically separating a network from every other network.

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60
Q

Aircrack-ng

A

An open source tool for penetration testing many aspects of wireless networks.

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61
Q

Alert

A

Proactive message sent from an SNMP manager as a result of a trap issued by an agent. Alerts may be sent as e-mail, SMS message, voicemail, or other avenue.

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62
Q

Algorithm

A

A set of rules for solving a problem in a given number of steps.

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63
Q

Allow

A

Permission for data or communication to pass through or to access a resource. Specific allowances through a firewall are called exceptions.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 791). McGraw-Hill Education. Kindle Edition.

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64
Q

American Registry for Internet Numbers (ARIN)

A

A Regional Internet Registry (RIR) that parcels out IP addresses to large ISPs and major corporations in North America.

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65
Q

Amplification

A

The aspect of a DoS attack that makes a server do a lot of processing and responding.

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66
Q

Amplified DoS Attack

A

The type of DoS attack that sends a small amount of traffic to a server, which produces a much larger response from the server that is sent to a spoofed IP address, overwhelming a victim machine.

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67
Q

Angled Physical Contact (APC)

A

Fiber-optic connector that makes physical contact between two fiber-optic cables. It specifies an 8-degree angle to the curved end, lowering signal loss. APC connectors have less connection degradation from multiple insertions compared to other connectors.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 791). McGraw-Hill Education. Kindle Edition.

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68
Q

Anti-Malware Program

A

Software that attempts to block several types of threats to a client including viruses, Trojan horses, worms, and other unapproved software installation and execution.

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69
Q

Antivirus

A

Software that attempts to prevent viruses from installing or executing on a client. Some antivirus software may also attempt to remove the virus or eradicate the effects of a virus after an infection.

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70
Q

Anycast

A

A method of addressing groups of computers as though they were a single computer. Anycasting starts by giving a number of computers (or clusters of computers) the same IP address. Advanced routers then send incoming packets to the closest of the computers.

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71
Q

Apache HTTP Server

A

An open source HTTP server program that runs on a wide variety of operating systems.

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72
Q

Application Log

A

Tracks application events, such as when an application opens or closes. Different types of application logs record different events.

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73
Q

Application Programming Interface (API)

A

Shared functions, subroutines, and libraries that allow programs on a machine to communicate with the OS and other programs.

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74
Q

Application/Context Aware

A

Advanced feature of some stateful firewalls where the content of the data is inspected to ensure it comes from, or is destined for, an appropriate application. Context-aware firewalls look both deeply and more broadly to ensure that the data content and other aspects of the packet are appropriate to the data transfer being conducted. Packets that fall outside these awareness criteria are denied by the firewall.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 792). McGraw-Hill Education. Kindle Edition.

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75
Q

Approval Process

A

One or more decision makers consider a proposed change and the impact of the change, including funding. If the change, the impact, and the funding are acceptable, the change is permitted.

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76
Q

Archive

A

The creation and storage of retrievable copies of electronic data for legal and functional purposes.

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77
Q

Archive Bit

A

An attribute of a file that shows whether the file has been backed up since the last change. Each time a file is opened, changed, or saved, the archive bit is turned on. Some types of backups turn off the archive bit to indicate that a good backup of the file exists on tape.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 792). McGraw-Hill Education. Kindle Edition.

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78
Q

Area ID

A

Address assigned to routers in an OSPF network to prevent flooding beyond the routers in that particular network. See also Open Shortest Path First (OSPF).

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79
Q

Areas

A

Groups of logically associated OSPF routers designed to maximize routing efficiency while keeping the amount of broadcast traffic well managed. Areas are assigned a 32-bit value that manifests as an integer between 0 and 4294967295 or can take a form similar to an IP address, for example, “0.0.0.0.”

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 792). McGraw-Hill Education. Kindle Edition.

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80
Q

ARP Cache Poisoning

A

A man-in-the-middle attack, where the attacker associates his MAC address with someone else’s IP address (almost always the router), so all traffic will be sent to him first. The attacker sends out unsolicited ARPs, which can either be requests or replies.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 792). McGraw-Hill Education. Kindle Edition.

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81
Q

arping

A

A command used to discover hosts on a network, similar to ping, but that relies on ARP rather than ICMP. The arping command won’t cross any routers, so it will only work within a broadcast domain. See also Address Resolution Protocol (ARP) and ping.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 792). McGraw-Hill Education. Kindle Edition.

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82
Q

Asset Disposal

A

Reusing, repurposing, or recycling computing devices that follows system life cycle policies in many organizations.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 792). McGraw-Hill Education. Kindle Edition.

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83
Q

Asset Management

A

Managing each aspect of a network, from documentation to performance to hardware.

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84
Q

Asymmetric Digital Subscriber Line (ADSL)

A

A fully digital, dedicated connection to the telephone system that provides download speeds of up to 9 Mbps and upload speeds of up to 1 Mbps.

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85
Q

Asymmetric Key Algorithm

A

An encryption method in which the key used to encrypt a message and the key used to decrypt it are different, or asymmetrical.

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86
Q

Asynchronous Transfer Mode (ATM)

A

A network technology that runs at speeds between 25 and 622 Mbps using fiber-optic cabling or Cat 5 or better UTP.

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87
Q

Attenuation

A

The degradation of signal over distance for a networking cable.

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88
Q

Authentication, Authorization, and Accounting (AAA)

A

A security philosophy wherein a computer trying to connect to a network must first present some form of credential in order to be authenticated and then must have limitable permissions within the network. The authenticating server should also record session information about the client.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 793). McGraw-Hill Education. Kindle Edition.

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89
Q

Authentication Server

A

In Kerberos, a system that hands out Ticket-Granting Tickets to clients after comparing the client hash to its own. See also Ticket-Granting Ticket (TGT).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 793). McGraw-Hill Education. Kindle Edition.

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90
Q

Authoritative DNS Servers

A

DNS servers that hold the IP addresses and names of systems for a particular domain or domains in special storage areas called forward lookup zones. They also have reverse lookup zones.

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91
Q

Authoritative Name Servers

A

Another name for authoritative DNS servers. See authoritative DNS servers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 793). McGraw-Hill Education. Kindle Edition.

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92
Q

Authorization

A

A step in the AAA philosophy during which a client’s permissions are decided upon. See also Authentication, Authorization, and Accounting (AAA).

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93
Q

Automatic Private IP Addressing (APIPA)

A

A networking feature in operating systems that enables DHCP clients to self-configure an IP address and subnet mask automatically when a DHCP server isn’t available.

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94
Q

Autonomous System (AS)

A

One or more networks that are governed by a single protocol, which provides routing for the Internet backbone.

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95
Q

Back Up

A

To save important data in a secondary location as a safety precaution against the loss of the primary data.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 793). McGraw-Hill Education. Kindle Edition.

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96
Q

Backup

A

Archive of important data that the disaster recovery team can retrieve in case of some disaster.

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97
Q

Backup Designated Router (BDR)

A

A second router set to take over if the designated router fails. See also designated router (DR).

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98
Q

Backup Generator

A

An onsite generator that provides electricity if the power utility fails.

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99
Q

Badge

A

A card-shaped device used for authentication; something you have, a possession factor.

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100
Q

Bandwidth

A

A piece of the spectrum occupied by some form of signal, whether it is television, voice, fax data, and so forth. Signals require a certain size and location of bandwidth to be transmitted. The higher the bandwidth, the faster the signal transmission, thus allowing for a more complex signal such as audio or video. Because bandwidth is a limited space, when one user is occupying it, others must wait their turn. Bandwidth is also the capacity of a network to transmit a given amount of data during a given period.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 794). McGraw-Hill Education. Kindle Edition.

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101
Q

Bandwidth Saturation

A

When the frequency of a band is filled to capacity due to the large number of devices using the same bandwidth.

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102
Q

Bandwidth Speed Tester

A

Web sites for measuring an Internet connection throughput, both download and upload speeds.

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103
Q

Banner Grabbing

A

When a malicious user gains access to an open port and uses it to probe a host to gain information and access, as well as learn details about running services.

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104
Q

Baseband

A

Digital signaling that has only one signal (a single signal) on the cable at a time. The signals must be in one of three states: one, zero, or idle.

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105
Q

Baseline

A

Static image of a system’s (or network’s) performance when all elements are known to be working properly.

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106
Q

Basic NAT (Network Address Translation)

A

A simple form of NAT that translates a computer’s private or internal IP address to a global IP address on a one-to-one basis.

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107
Q

Basic Rate Interface (BDI)

A

The basic ISDN configuration, which consists of two B channels (which can carry voice or data at a rate of 64 Kbps) and one D channel (which carries setup and configuration information, as well as data, at 16 Kbps).

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108
Q

Basic Server Set (BSS)

A

In wireless networking, a single access point servicing a given area.

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109
Q

Basic Service Set Identifier (BSSID)

A

Naming scheme in wireless networks.

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110
Q

Baud

A

One analog cycle on a telephone line.

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111
Q

Baud Rate

A

The number of bauds per second. In the early days of telephone data transmission, the baud rate was often analogous to bits per second. Due to advanced modulation of baud cycles as well as data compression, this is no longer true.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 794). McGraw-Hill Education. Kindle Edition.

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112
Q

Bearer Channel (B Channel)

A

A type of ISDN channel that carries data and voice information using standard DS0 channels at 64 Kbps.

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113
Q

Bidirectional (BiDi) Transceiver

A

Full-duplex fiber-optic connector that relies on wave division multiplexing (WDM) to differentiate wave signals on a single fiber, creating single-strand fiber transmission.

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114
Q

Biometric

A

Human physical characteristic that can be measured and saved to be compared as authentication in granting the user access to a network or resource. Common biometrics include fingerprints, facial scans, retinal scans, voice pattern recognition, and others.

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115
Q

Biometric Devices

A

Devices that scan fingerprints, retinas, or even the sound of the user’s voice to provide a foolproof replacement for both passwords and smart devices.

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116
Q

Bit Error Rate Test (BERT)

A

An end-to-end test that verifies a T-carrier connection.

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117
Q

Block

A

Access that is denied to or from a resource. A block may be implemented in a firewall, access control server, or other secure gateway. See also allow.

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118
Q

Block Cipher

A

An encryption algorithm in which data is encrypted in “chunks” of a certain length at a time. Popular in wired networks.

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119
Q

Blocks

A

Contiguous ranges of IP addresses that are assigned to organizations and end users by IANA. Also called network blocks.

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120
Q

Bluejacking

A

The process of sending unsolicited messages to another Bluetooth device.

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121
Q

Bluesnarfing

A

Use of weaknesses in the Bluetooth standard to steal information from other Bluetooth devices.

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122
Q

BNC Connector

A

A connector used for 10Base2 coaxial cable. All BNC connectors have to be locked into place by turning the locking ring 90 degrees.

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123
Q

BNC Coupler

A

Passive connector used to join two segments of coaxial cables that are terminated with BNC connectors.

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124
Q

Bonding

A

Two or more NICs in a system working together to act as a single NIC to increase performance.

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125
Q

Bootstrap Protocol (BOOTP)

A

A component of TCP/IP that allows computers to discover and receive an IP address from a DHCP server prior to booting the OS. Other items that may be discovered during the BOOTP process are the IP address of the default gateway for the subnet and the IP addresses of any name servers.

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126
Q

Border Gateway Protocol (BGP-4)

A

An exterior gateway routing protocol that enables groups of routers to share routing information so that efficient, loop-free routes can be established.

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127
Q

Botnet

A

A group of computers under the control of one operator, used for malicious purposes. See also zombie.

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128
Q

Bottleneck

A

A spot on a network where traffic slows precipitously.

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129
Q

Bounce

A

A signal sent by one device taking many different paths to get to the receiving systems.

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130
Q

bPS (Bits Per Second)

A

A measurement of how fast data is moved across a transmission medium. A Gigabit Ethernet connection moves 1,000,000,000 bps.

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131
Q

Bridge

A

A device that connects two networks and passes traffic between them based only on the node address, so that traffic between nodes on one network does not appear on the other network. For example, an Ethernet bridge only looks at the MAC address. Bridges filter and forward frames based on MAC addresses and operate at Layer 2 (Data Link layer) of the OSI seven-layer model.

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132
Q

Bridge Loop

A

A negative situation in which bridging devices (usually switches) are installed in a loop configuration, causing frames to loop continuously. Switches using Spanning Tree Protocol (STP) prevent bridge loops by automatically turning off looping ports.

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133
Q

Bridged Connection

A

An early type of DSL connection that made the DSL line function the same as if you snapped an Ethernet cable into your NIC.

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134
Q

Bridging Loop

A

A physical wiring of a circuitous path between two or more switches, causing frames to loop continuously. Implementing Spanning Tree Protocol (STP) in these devices will discover and block looped paths.

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135
Q

Bring Your Own Device (BYOD)

A

A trend wherein users bring their own network-enabled devices to the work environment. These cell phones, tablets, notebooks, and other mobile devices must be easily and securely integrated and released from corporate network environments using on-boarding and off-boarding technologies.

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136
Q

Broadband

A

Analog signaling that sends multiple signals over the cable at the same time. The best example of broadband signaling is cable television. The zero, one, and idle states exist on multiple channels on the same cable. See also baseband.

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137
Q

Broadcast Address

A

The address a NIC attaches to a frame when it wants every other NIC on the network to read it. In TCP/IP, the general broadcast address is 255.255.255.255. In Ethernet, the broadcast MAC address is FF-FF-FF-FF-FF-FF.

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138
Q

Broadcast Domain

A

A network of computers that will hear each other’s broadcasts. The older term collision domain is the same but rarely used today.

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139
Q

Broadcast Storm

A

The result of one or more devices sending a nonstop flurry of broadcast frames on the network.

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140
Q

Browser

A

A software program specifically designed to retrieve, interpret, and display Web pages.

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141
Q

Brute Force

A

A type of attack wherein every permutation of some form of data is tried in an attempt to discover protected information. Most commonly used on password cracking.

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142
Q

Buffer

A

A component of a fiber-optic cable that adds strength to the cable.

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143
Q

Building Entrance

A

Location where all the cables from the outside world (telephone lines, cables from other buildings, and so on) come into a building.

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144
Q

Bus Topology

A

A network topology that uses a single bus cable that connects all of the computers in a line. Bus topology networks must be terminated to prevent signal reflection.

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145
Q

Business Continuity Planning (BCP)

A

The process of defining the steps to be taken in the event of a physical corporate crisis to continue operations. Includes the creation of documents to specify facilities, equipment, resources, personnel, and their roles.

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146
Q

Butt Set

A

Device that can tap into a 66- or 110-punchdown block to see if a particular line is working.

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147
Q

Byte

A

Eight contiguous bits, the fundamental data unit of personal computers. Storing the equivalent of one character, the byte is also the basic unit of measurement for computer storage. Bytes are counted in powers of two.

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148
Q

CAB Files

A

Short for “cabinet files.” These files are compressed and most commonly used during Microsoft operating system installation to store many smaller files, such as device drivers.

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149
Q

Cable Certifier

A

A very powerful cable testing device used by professional installers to test the electrical characteristics of a cable and then generate a certification report, proving that cable runs pass TIA/EIA standards.

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150
Q

Cable Drop

A

Location where the cable comes out of the wall at the workstation location.

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151
Q

Cable Modem

A

A bridge device that interconnects the cable company’s DOCSIS service to the user’s Ethernet network. In most locations, the cable modem is the demarc.

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152
Q

Cable Stripper

A

Device that enables the creation of UTP cables.

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153
Q

Cable Tester

A

A generic name for a device that tests cables. Some common tests are continuity, electrical shorts, crossed wires, or other electrical characteristics.

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154
Q

Cable Tray

A

A device for organizing cable runs in a drop ceiling.

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155
Q

Cache

A

A special area of RAM that stores frequently accessed data. In a network there are a number of applications that take advantage of cache in some way.

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156
Q

Cached Lookup

A

The list kept by a DNS server of IP addresses it has already resolved, so it won’t have to re-resolve an FQDN it has already checked.

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157
Q

Cache-Only DNS Servers (Caching-Only DNS Servers)

A

DNS servers that do not have any forward lookup zones. They resolve names of systems on the Internet for the network, but are not responsible for telling other DNS servers the names of any clients.

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158
Q

Caching Engine

A

A server dedicated to storing cache information on your network. These servers can reduce overall network traffic dramatically.

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159
Q

Cacti

A

Popular network graphing program.

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160
Q

Campus Area Network (CAN)

A

A network installed in a medium-sized space spanning multiple buildings.

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161
Q

Canonical Name (CNAME)

A

Less common type of DNS record that acts as a computer’s alias.

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162
Q

Captive Portal

A

A Wi-Fi network implementation used in some public facilities that directs attempts to connect to the network to an internal Web page for that facility; generally used to force terms of service on users.

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163
Q

Capture File

A

A file in which the collected packets from a packet sniffer program are stored.

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164
Q

Card

A

Generic term for anything that you can snap into an expansion slot.

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165
Q

Cat 3

A

Category 3 wire, a TIA/EIA standard for UTP wiring that can operate at up to 16 Mbps.

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166
Q

Cat 5

A

Category 5 wire, a TIA/EIA standard for UTP wiring that can operate at up to 100 Mbps.

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167
Q

Cat 5e

A

Category 5e wire, a TIA/EIA standard for UTP wiring with improved support for 100 Mbps using two pairs and support for 1000 Mbps using four pairs.

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168
Q

Cat 6

A

Category 6 wire, a TIA/EIA standard for UTP wiring with improved support for 1000 Mbps; supports 10 Gbps up to 55 meters.

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169
Q

Cat 6a

A

Category 6a wire, a TIA/EIA standard for UTP wiring with support for 10 Gbps up to 100 meters.

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170
Q

Cat 7

A

Category 7 wire, a standard (unrecognized by TIA) for UTP wiring with support for 10+ Gbps at 600 MHz max. frequency.

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171
Q

Category (CAT) Rating

A

A grade assigned to cable to help network installers get the right cable for the right network technology. Cat ratings are officially rated in megahertz (MHz), indicating the highest-frequency bandwidth the cable can handle.

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172
Q

CCITT (Comité Consutatif Internationale Téléphonique et Télégraphique)

A

European standards body that established the V standards for modems.

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173
Q

CCMP-AES

A

A 128-bit block cipher used in the IEEE 802.11i standard.

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174
Q

Central Office

A

Building that houses local exchanges and a location where individual voice circuits come together.

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175
Q

Certificate

A

A public encryption key signed with the digital signature from a trusted third party called a certificate authority (CA). This key serves to validate the identity of its holder when that person or company sends data to other parties.

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176
Q

Certifier

A

A device that tests a cable to ensure that it can handle its rated amount of capacity.

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177
Q

Chain of Custody

A

A document used to track the collection, handling, and transfer of evidence.

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178
Q

Challenge Handshake Authentication Protocol (CHAP)

A

A remote access authentication protocol. It has the serving system challenge the remote client, which must provide an encrypted password.

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179
Q

Challenge-Response Authentication Mechanism-Message Digest 5 (CRAM-MD5)

A

A tool for server authentication in SMTP servers.

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180
Q

Change Management

A

The process of initiating, approving, funding, implementing, and documenting significant changes to the network.

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181
Q

Change Management Documentation

A

A set of documents that defines procedures for changes to the network.

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182
Q

Change Management Team

A

Personnel who collect change requests, evaluate the change, work with decision makers for approval, plan and implement approved changes, and document the changes.

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183
Q

Change Request

A

A formal or informal document suggesting a modification to some aspect of the network or computing environment.

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184
Q

Channel

A

A portion of the wireless spectrum on which a particular wireless network operates. Setting wireless networks to different channels enables separation of the networks.

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185
Q

Channel Bonding

A

Wireless technology that enables wireless access points (WAPs) to use two channels for transmission.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 799). McGraw-Hill Education. Kindle Edition.

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186
Q

Channel Overlap

A

Drawback of 2.4-GHz wireless networks where channels shared some bandwidth with other channels. This is why only three 2.4-GHz channels can be used in the United States (1, 6, and 11).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 799). McGraw-Hill Education. Kindle Edition.

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187
Q

Chat

A

A multiparty, real-time text conversation. The Internet’s most popular version is known as Internet Relay Chat (IRC), which many groups use to converse in real time with each other.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 799). McGraw-Hill Education. Kindle Edition.

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188
Q

Checksum

A

A simple error-detection method that adds a numerical value to each data packet, based on the number of data bits in the packet. The receiving node applies the same formula to the data and verifies that the numerical value is the same; if not, the data has been corrupted and must be re-sent.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 799). McGraw-Hill Education. Kindle Edition.

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189
Q

Choose Your Own Device (CYOD)

A

Deployment model where corporate employees select among a catalog of approved mobile devices.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 799). McGraw-Hill Education. Kindle Edition.

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190
Q

Cipher

A

A series of complex and hard-to-reverse mathematics run on a string of ones and zeroes in order to make a new set of seemingly meaningless ones and zeroes.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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191
Q

Cipher Lock

A

A door unlocking system that uses a door handle, a latch, and a sequence of mechanical push buttons.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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192
Q

Ciphertext

A

The output when cleartext is run through a cipher algorithm using a key.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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193
Q

Circuit Switching

A

The process for connecting two phones together on one circuit.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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194
Q

Cisco IOS

A

Cisco’s proprietary operating system.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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195
Q

Cladding

A

The part of a fiber-optic cable that makes the light reflect down the fiber.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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196
Q

Class License

A

Contiguous chunk of IP addresses passed out by the Internet Assigned Numbers Authority (IANA).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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197
Q

Class of Service (CoS)

A

A prioritization value used to apply to services, ports, or whatever a quality of service (QoS) device might use.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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198
Q

Classful

A

Obsolete IPv4 addressing scheme that relied on the original class blocks, such as Class A, Class B, and Class C.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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199
Q

Classless

A

IPv4 addressing scheme that does not rely on the original class blocks, such as Class A, Class B, and Class C.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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200
Q

Classless Inter-Domain Routing (CIDR)

A

The basis of allocating and routing classless addresses, not restricting subnet masks to /8, /16, or /24, which classful addressing did. See also subnetting.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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201
Q

Classless Subnet

A

A subnet that does not fall into the common categories such as Class A, Class B, and Class C.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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202
Q

Cleartext

A

See “Plaintext”

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203
Q

Cleartext Credentials

A

Any login process conducted over a network where account names, passwords, or other authentication elements are sent from the client or server in an unencrypted fashion.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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204
Q

Client

A

A computer program that uses the services of another computer program; software that extracts information from a server. Your autodial phone is a client, and the phone company is its server. Also, a machine that accesses shared resources on a server.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

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205
Q

Client/Server

A

A relationship in which client software obtains services from a server on behalf of a user.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

206
Q

Client/Server Application

A

An application that performs some or all of its processing on an application server rather than on the client. The client usually only receives the result of the processing.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

207
Q

Client/Server Network

A

A network that has dedicated server machines and client machines.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 800). McGraw-Hill Education. Kindle Edition.

208
Q

Client-to-Site

A

A type of VPN connection where a single computer logs into a remote network and becomes, for all intents and purposes, a member of that network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

209
Q

Closed-Circuit Television (CCTV)

A

A self-contained, closed system in which video cameras feed their signal to specific, dedicated monitors and storage devices.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

210
Q

Cloud Computing

A

Using the Internet to store files and run applications. For example, Google Docs is a cloud computing application that enables you to run productivity applications over the Internet from your Web browser.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

211
Q

Cloud/Server Based

A

Remote storage and access of software, especially anti-malware software, where it can be singularly updated. This central storage allows users to access and run current versions of software easily, with the disadvantage of it not running automatically on the local client. The client must initiate access to and launching of the software.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

212
Q

Cloud/Server-Based Anti-Malware

A

Remote storage and access of software designed to protect against malicious software where it can be singularly updated.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

213
Q

Clustering

A

Multiple pieces of equipment, such as servers, connected, which appear to the user and the network as one logical device, providing data and services to the organization for both redundancy and fault tolerance.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

214
Q

Coarse Wavelength Division Multiplexing (CWDM)

A

An optical multiplexing technology in which a few signals of different optical wavelength could be combined to travel a fairly short distance.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

215
Q

Coaxial Cable

A

A type of cable that contains a central conductor wire surrounded by an insulating material, which in turn is surrounded by a braided metal shield. It is called coaxial because the center wire and the braided metal shield share a common axis or centerline.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

216
Q

Code-Division Multiple Access (CDMA)

A

Early cellular telephone technology that used spread-spectrum transmission. Obsolete.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

217
Q

Cold Site

A

A location that consists of a building, facilities, desks, toilets, parking, and everything that a business needs except computers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

218
Q

Collision

A

The result of two nodes transmitting at the same time on a multiple access network such as Ethernet. Both frames may be lost or partial frames may result.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

219
Q

Collision Light

A

A light on some older NICs that flickers when a network collision is detected.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

220
Q

Command

A

A request, typed from a terminal or embedded in a file, to perform an operation or to execute a particular program.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

221
Q

Common Internet File System (CIFS)

A

The protocol that NetBIOS used to share folders and printers. Still very common, even on UNIX/Linux systems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 801). McGraw-Hill Education. Kindle Edition.

222
Q

Community Cloud

A

A private cloud paid for and used by more than one organization.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

223
Q

Compatibility Issue

A

When different pieces of hardware or software don’t work together correctly.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

224
Q

Compatibility Requirements

A

With respect to network installations and upgrades, requirements that deal with how well the new technology integrates with older or existing technologies.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

225
Q

Complete Algorithm

A

A cipher and the methods used to implement that cipher.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

226
Q

Computer Forensics

A

The science of gathering, preserving, and presenting evidence stored on a computer or any form of digital media that is presentable in a court of law.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

227
Q

Concentrator

A

A device that brings together at a common center connections to a particular kind of network (such as Ethernet) and implements that network internally.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

228
Q

Configuration Management

A

A set of documents, policies, and procedures designed to help you maintain and update your network in a logical, orderly fashion.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

229
Q

Configuration Management Documentation

A

Documents that define the configuration of a network. These would include wiring diagrams, network diagrams, baselines, and policy/procedure/configuration documentation.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

230
Q

Configurations

A

The settings stored in devices that define how they are to operate.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

231
Q

Connection

A

A term used to refer to communication between two computers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

232
Q

Connectionless

A

A type of communication characterized by sending packets that are not acknowledged by the destination host. UDP is the quintessential connectionless protocol in the TCP/IP suite.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

233
Q

Connectionless Communication

A

A protocol that does not establish and verify a connection between the hosts before sending data; it just sends the data and hopes for the best. This is faster than connection-oriented protocols. UDP is an example of a connectionless protocol.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

234
Q

Connection-Oriented

A

Network communication between two hosts that includes negotiation between the hosts to establish a communication session. Data segments are then transferred between hosts, with each segment being acknowledged before a subsequent segment can be sent. Orderly closure of the communication is conducted at the end of the data transfer or in the event of a communication failure. TCP is the only connection-oriented protocol in the TCP/IP suite.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

235
Q

Connection-Oriented Communication

A

A protocol that establishes a connection between two hosts before transmitting data and verifies receipt before closing the connection between the hosts. TCP is an example of a connection-oriented protocol.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

236
Q

Console Port

A

Connection jack in a switch used exclusively to connect a computer that will manage the switch.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 802). McGraw-Hill Education. Kindle Edition.

237
Q

Content Filter

A

An advanced networking device that implements content filtering, enabling administrators to filter traffic based on specific signatures or keywords (such as profane language).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

238
Q

Content Switch

A

Advanced networking device that works at least at Layer 7 (Application layer) and hides servers behind a single IP.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

239
Q

Contingency Plan

A

Documents that set out how to limit damage and recover quickly from an incident.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

240
Q

Contingency Planning

A

The process of creating documents that set out how to limit damage and recover quickly from an incident.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

241
Q

Continuity

A

The physical connection of wires in a network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

242
Q

Continuity Tester

A

Inexpensive network tester that can only test for continuity on a line.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

243
Q

Convergence

A

Point at which the routing tables for all routers in a network are updated.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

244
Q

Copy Backup

A

A type of backup similar to normal or full, in that all selected files on a system are backed up. This type of backup does not change the archive bit of the files being backed up.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

245
Q

Core

A

The central glass of the fiber-optic cable that carries the light signal.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

246
Q

Corporate Owned Business Only (COBO)

A

Deployment model where the corporation owns all the mobile devices issued to employees. Employees have a whitelist of preapproved applications they can install.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

247
Q

Cost

A

An arbitrary metric value assigned to a network route with OSFP-capable routers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

248
Q

Counter

A

A predefined event that is recorded to a log file.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

249
Q

CRC (Cyclic Redundancy Check)

A

A mathematical method used to check for errors in long streams of transmitted data with high accuracy.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 803). McGraw-Hill Education. Kindle Edition.

250
Q

Daily Backup

A

Also called a daily copy backup, makes a copy of all files that have been changed on that day without changing the archive bits of those files.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

251
Q

Daisy-Chain

A

A method of connecting together several devices along a bus and managing the signals for each device.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

252
Q

Data Backup

A

The process of creating extra copies of data to be used in case the primary data source fails.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

253
Q

Data Encryption Standard (DES)

A

A symmetric-key algorithm developed by the U.S. government in the 1970s and formerly in use in a variety of TCP/IP applications. DES used a 64-bit block and a 56-bit key. Over time, the 56-bit key made DES susceptible to brute-force attacks.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

254
Q

Data Over Cable Service Interface Specification (DOCSIS)

A

The unique protocol used by cable modem networks.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

255
Q

Datagram

A

A connectionless transfer unit created with User Datagram Protocol designed for quick transfers over a packet-switched network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

256
Q

Datagram TLS (DTLS) VPN

A

A virtual private network solution that optimizes connections for delay-sensitive applications, such as voice and video.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 804). McGraw-Hill Education. Kindle Edition.

257
Q

DB-9

A

A 9-pin, D-shaped subminiature connector, often used in serial port connections.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

258
Q

DB-25

A

A 25-pin, D-shaped subminiature connector, typically use in parallel and older serial port connections.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

259
Q

Dead Spot

A

A place that should be covered by the network signal but where devices get no signal.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

260
Q

De-Authentication (deauth) Attack

A

A form of DoS attack that targets 802.11 Wi-Fi networks specifically by sending out a frame that kicks a wireless client off its current WAP connection. A rogue WAP nearby presents a stronger signal, which the client will prefer. The rogue WAP connects the client to the Internet and then proceeds to intercept communications to and from that client.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

261
Q

Decibel (dB)

A

A measurement of the quality of a signal.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

262
Q

Dedicated Circuit

A

A circuit that runs from a breaker box to specific outlets.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

263
Q

Dedicated Line

A

A telephone line that is an always open, or connected, circuit. Dedicated telephone lines usually do not have telephone numbers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

264
Q

Dedicated Server

A

A machine that does not use any client functions, only server functions.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

265
Q

De-Encapsulation

A

The process of stripping all the extra header information from a packet as the data moves up a protocol stack.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

266
Q

Default

A

A software function or operation that occurs automatically unless the user specifies something else.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

267
Q

Default Gateway

A

In a TCP/IP network, the IP address of the router that interconnects the LAN to a wider network, usually the Internet. This router’s IP address is part of the necessary TCP/IP configuration for communicating with multiple networks using IP.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

268
Q

Delta Channel (D Channel)

A

A type of ISDN line that transfers data at 16 Kbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

269
Q

Demarc

A

A device that marks the dividing line of responsibility for the functioning of a network between internal users and upstream service providers. Also, demarcation point.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

270
Q

Demarc Extension

A

Any cabling that runs from the network interface to whatever box is used by the customer as a demarc.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

271
Q

Demilitarized Zone

A

A lightly protected or unprotected subnet network positioned between an outer firewall and an organization’s highly protected internal network. DMZs are used mainly to host public address servers (such as Web servers).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

272
Q

Demultiplexer

A

Device that can extract and distribute individual streams of data that have been combined together to travel along a single shared network cable.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

273
Q

Denial of Service (DoS)

A

An effort to prevent users from gaining normal use of a resource. See also denial of service (DoS) attack.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 805). McGraw-Hill Education. Kindle Edition.

274
Q

Dense Wavelength Division Multiplexing (DWDM)

A

An optical multiplexing technology in which a large number of optical signals of different optical wavelength could be combined to travel over relatively long fiber cables.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

275
Q

Designated Router (DR)

A

The main router in an OSPF network that relays information to all other routers in the area.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

276
Q

Destination Port

A

A fixed, predetermined number that defines the function or session type in a TCP/IP network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

277
Q

Device Driver

A

A subprogram to control communications between the computer and some peripheral hardware.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

278
Q

Device ID

A

The last six digits of a MAC address, identifying the manufacturer’s unique serial number for that NIC.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

279
Q

Device Types/Requirements

A

With respect to installing and upgrading networks, these determine what equipment is needed to build the network and how the network should be organized.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

280
Q

DHCP 4-Way Handshake (DORA)

A

DHCP process in which a client gets a lease for an IPv4 address—Discover, Offer, Request, and Ack.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

281
Q

DHCP Lease

A

Created by the DHCP server to allow a system requesting DHCP IP information to use that information for a certain amount of time.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

282
Q

DHCP Relay

A

A router process that, when enabled, passes DHCP requests and responses across router interfaces. In common terms, DHCP communications can cross from one network to another within a router that has DHCP relay enabled and configured.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

283
Q

DHCP Scope

A

The pool of IP addresses that a DHCP server may allocate to clients requesting IP addresses or other IP information like DNS server addresses.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

284
Q

DHCP Snooping

A

Switch process that monitors DHCP traffic, filtering out DHCP messages from untrusted sources. Typically used to block attacks that use a rogue DHCP server.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

285
Q

Dial-Up Lines

A

Telephone lines with telephone numbers; they must dial to make a connection, as opposed to a dedicated line.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

286
Q

Differential Backup

A

Similar to an incremental backup in that it backs up the files that have been changed since the last backup. This type of backup does not change the state of the archive bit.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

287
Q

Differentiated Services (Diffserv)

A

The underlying architecture that makes quality of service (QoS) work.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 806). McGraw-Hill Education. Kindle Edition.

288
Q

Digital Signal 1 (DS1)

A

The signaling method used by T1 lines, which uses a relatively simple frame consisting of 25 pieces: a framing bit and 24 channels. Each DS1 channel holds a single 8-bit DS0 data sample. The framing bit and data channels combine to make 193 bits per DS1 frame. These frames are transmitted 8000 times/sec, making a total throughput of 1.544 Mbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

289
Q

Digital Signature

A

An encrypted hash of a private encryption key that verifies a sender’s identity to those who receive encrypted data or messages.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

290
Q

Digital Subscriber Line (DSL)

A

A high-speed Internet connection technology that uses a regular telephone line for connectivity. DSL comes in several varieties, including asymmetric (ADSL) and symmetric (SDSL), and many speeds. Typical home-user DSL connections are ADSL with a download speed of up to 9 Mbps and an upload speed of up to 1 Kbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

291
Q

Dipole Antenna

A

The standard straight-wire antenna that provides most omnidirectional function.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

292
Q

Direct Current

A

A type of electric circuit where the flow of electrons is in a complete circle.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

293
Q

Directional Antenna

A

An antenna that focuses its signal more toward a specific direction; as compared to an omnidirectional antenna that radiates its signal in all directions equally.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

294
Q

Direct-Sequence Spread-Spectrum (DSSS)

A

A spread-spectrum broadcasting method defined in the 802.11 standard that sends data out on different frequencies at the same time.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

295
Q

Disaster Recovery

A

The means and methods to recover primary infrastructure from a disaster. Disaster recovery starts with a plan and includes data backups.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

296
Q

Discretionary Access Control (DAC)

A

Authorization method based on the idea that there is an owner of a resource who may at his or her discretion assign access to that resource. DAC is considered much more flexible than mandatory access control (MAC).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

297
Q

Disk Mirroring

A

Process by which data is written simultaneously to two or more disk drives. Read and write speed is decreased but redundancy, in case of catastrophe, is increased. Also known as RAID level 1. See also duplexing.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

298
Q

Disk Striping

A

Process by which data is spread among multiple (at least two) drives. It increases speed for both reads and writes of data, but provides no fault tolerance. Also known as RAID level 0.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

299
Q

Disk Striping w/ Parity

A

Process by which data is spread among multiple (at least three) drives, with parity information as well to provide fault tolerance. The most commonly implemented type is RAID 5, where the data and parity information is spread across three or more drives.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 807). McGraw-Hill Education. Kindle Edition.

300
Q

Dispersion

A

Diffusion over distance of light propagating down fiber cable.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

301
Q

Distance Vector

A

Set of routing protocols that calculates the total cost to get to a particular network ID and compares that cost to the total cost of all the other routes to get to that same network ID.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

302
Q

Distributed Control System (DCS)

A

A small controller added directly to a machine used to distribute the computing load.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

303
Q

Distributed Coordination Function (DCF)

A

One of two methods of collision avoidance defined by the 802.11 standard and the only one currently implemented. DCF specifies strict rules for sending data onto the network media. See also Point Coordination Function (PCF).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

304
Q

Distributed Denial of Service

A

Multicomputer assault on a network resource that attempts, with sheer overwhelming quantity of requests, to prevent regular users from receiving services from the resource. Can also be used to crash systems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

305
Q

Distributed Switching

A

The centralized installation, configuration, and handling of every switch in a virtualized network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

306
Q

DLL (Dynamic Link Library)

A

A file of executable functions or data that can be used by a Windows application. Typically, a DLL provides one or more particular functions, and a program accesses the functions by creating links to the DLL.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

307
Q

DNS Domain

A

DNS domainA specific branch of the DNS name space. Top-level DNS domains include .com, .gov, and .edu.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

308
Q

DNS Forwarding

A

DNS server configuration that sends (forwards) DNS requests to another DNS server.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

309
Q

DNS Resolver Cache

A

A cache used by Windows DNS clients to keep track of DNS information.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

310
Q

DNS Root Servers

A

The highest in the hierarchy of DNS servers running the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

311
Q

DNS Server

A

A system that runs a special DNS server program.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

312
Q

DNS Tree

A

A hierarchy of DNS domains and individual computer names organized into a tree-like structure, the top of which is the root.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

313
Q

Document

A

A medium and the data recorded on it for human use; for example, a report sheet or book. By extension, any record that has permanence and that can be read by a human or a machine.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 808). McGraw-Hill Education. Kindle Edition.

314
Q

Documentation

A

A collection of organized documents or the information recorded in documents. Also, instructional material specifying the inputs, operations, and outputs of a computer program or system.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

315
Q

Domain

A

A term used to describe a grouping of users, computers, and/or networks. In Microsoft networking, a domain is a group of computers and users that shares a common account database and a common security policy. For the Internet, a domain is a group of computers that shares a common element in their DNS hierarchical name.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

316
Q

Domain Controller

A

A Microsoft Windows Server system specifically configured to store user and server account information for its domain. Often abbreviated as “DC.” Windows domain controllers store all account and security information in the Active Directory domain service.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

317
Q

Domain Information Groper (DIG)

A

Command-line tool in non-Windows systems used to diagnose DNS problems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

318
Q

Domain Name System (DNS)

A

A TCP/IP name resolution system that resolves host names to IP addresses, IP addresses to host names, and other bindings, like DNS servers and mail servers for a domain.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

319
Q

Domain Users and Groups

A

Users and groups that are defined across an entire network domain.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

320
Q

Door Access Controls

A

Methodology to grant permission or to deny passage through a doorway. The method may be computer-controlled, human-controlled, token-oriented, or many other means.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

321
Q

Dotted Decimal Notation

A

Shorthand method for discussing and configuring binary IP addresses.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

322
Q

Download

A

The transfer of information from a remote computer system to the user’s system. Opposite of upload.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

323
Q

Drive Mirroring

A

The process of writing identical data to two hard drives on the same controller at the same time to provide data redundancy.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

324
Q

DS0

A

The digital signal rate created by converting analog sound into 8-bit chunks 8000 times a second, with a data stream of 64 Kbps. This is the simplest data stream (and the slowest rate) of the digital part of the phone system.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

325
Q

DS1

A

The signaling method used by T1 lines, which uses a relatively simple frame consisting of 25 pieces: a framing bit and 24 channels. Each DS1 channel holds a single 8-bit DS0 data sample. The framing bit and data channels combine to make 193 bits per DS1 frame. These frames are transmitted 8000 times/sec, making a total throughput of 1.544 Mbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 809). McGraw-Hill Education. Kindle Edition.

326
Q

DSL Access Multiplexer (DSLAM)

A

A device located in a telephone company’s central office that connects multiple customers to the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

327
Q

DSL Modem

A

A device that enables customers to connect to the Internet using a DSL connection. A DSL modem isn’t really a modem—it’s more like an ISDN terminal adapter—but the term stuck, and even the manufacturers of the devices now call them DSL modems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

328
Q

DSP (Digital Signal Processor)

A

A specialized microprocessor-like device that processes digital signals at the expense of other capabilities, much as the floating-point unit (FPU) is optimized for math functions. DSPs are used in such specialized hardware as high-speed modems, multimedia sound cards, MIDI equipment, and real-time video capture and compression.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

329
Q

Dual Stack

A

Networking device, such as a router or PC, that runs both IPv4 and IPv6.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

330
Q

Duplexing

A

Also called disk duplexing or drive duplexing, similar to mirroring in that data is written to and read from two physical drives for fault tolerance. In addition, separate controllers are used for each drive, for both additional fault tolerance and additional speed. Considered RAID level 1. See also disk mirroring.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

331
Q

Dynamic Addressing

A

A way for a computer to receive IP information automatically from a server program. See also Dynamic Host Configuration Protocol (DHCP).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

332
Q

Dynamic ARP Inspection (DAI)

A

Cisco process that updates a database of trusted systems. DAI then watches for false or suspicious ARPs and ignores them to prevent ARP cache poisoning and other malevolent efforts.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

333
Q

Dynamic DNS (DDNS)

A

A protocol that enables DNS servers to get automatic updates of IP addresses of computers in their forward lookup zones, mainly by talking to the local DHCP server.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

334
Q

Dynamic Host Configuration Protocol (DHCP)

A

A protocol that enables a DHCP server to set TCP/IP settings automatically for a DHCP client.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

335
Q

Dynamic Multipoint VPN (DMVPN)

A

A virtual private network solution optimized for connections between multiple locations directly.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

336
Q

Dynamic NAT (DNAT)

A

Type of Network Address Translation (NAT) in which many computers can share a pool of routable IP addresses that number fewer than the computers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

337
Q

Dynamic Port Numbers

A

Port numbers 49152–65535, recommended by the IANA to be used as ephemeral port numbers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

338
Q

Dynamic Routing

A

Process by which routers in an internetwork automatically exchange information with other routers. Requires a dynamic routing protocol, such as OSPF or RIP.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 810). McGraw-Hill Education. Kindle Edition.

339
Q

Dynamic Routing Protocol

A

A protocol that supports the building of automatic routing tables, such as OSPF or RIP.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

340
Q

E1

A

The European counterpart of a T1 connection that carries 32 channels at 64 Kbps for a total of 2.048 Mbps—making it slightly faster than a T1.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

341
Q

E3

A

The European counterpart of a T3 line that carries 16 E1 lines (512 channels), for a total bandwidth of 34.368 Mbps—making it a little bit slower than an American T3.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

342
Q

EAP-TTLS (Extensible Authentication Protocol w/ Tunneled Transport-Layer Security)

A

A protocol similar to EAP-TLS but only uses a single server-side certificate.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

343
Q

EAP-TLS (Extensible Authentication Protocol w/ Transport Layer Security)

A

A protocol that defines the use of a RADIUS server as well as mutual authentication, requiring certificates on both the server and every client.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

344
Q

Edge Device

A

A hardware device that has been optimized to perform a task in coordination with other edge devices and controllers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

345
Q

Edge Router

A

Router that connects one Autonomous System (AS) to another.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

346
Q

Effective Permissions

A

The permissions of all groups combined in any network operating system.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

347
Q

Electromagnetic Interference (EMI)

A

Interference from one device to another, resulting in poor performance in the device’s capabilities. This is similar to having static on your TV while running a hair dryer, or placing two monitors too close together and getting a “shaky” screen.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

348
Q

Electronic Discovery

A

The process of requesting and providing electronic and stored data and evidence in a legal way.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

349
Q

E-Mail (Electronic Mail)

A

Messages, usually text, sent from one person to another via computer. E-mail can also be sent automatically to a large number of addresses, known as a mailing list.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

350
Q

E-Mail Alert

A

Notification sent by e-mail as a result of an event. A typical use is a notification sent from an SNMP manager as a result of an out-of-tolerance condition in an SNMP managed device.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

351
Q

E-Mail Client

A

Program that runs on a computer and enables a user to send, receive, and organize e-mail.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

352
Q

E-Mail Server

A

Also known as a mail server, a server that accepts incoming e-mail, sorts the e-mail for recipients into mailboxes, and sends e-mail to other servers using SMTP.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

353
Q

Emulator

A

Software or hardware that converts the commands to and from the host machine to an entirely different platform. For example, a program that enables you to run Nintendo games on your PC.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 811). McGraw-Hill Education. Kindle Edition.

354
Q

Encapsulation

A

The process of putting the packets from one protocol inside the packets of another protocol. An example of this is TCP/IP encapsulation in Ethernet, which places TCP/IP packets inside Ethernet frames.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

355
Q

Encryption

A

A method of securing messages by scrambling and encoding each packet as it is sent across an unsecured medium, such as the Internet. Each encryption level provides multiple standards and options.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

356
Q

Endpoint

A

In the TCP/IP world, the session information stored in RAM. See also socket.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

357
Q

Endpoints

A

Correct term to use when discussing the data each computer stores about the connection between two computers’ TCP/IP applications. See also socket pairs.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

358
Q

End-to-End Principle

A

Early network concept that originally meant that applications and work should happen only at the endpoints in a network, such as in a single client and a single server.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

359
Q

Enhanced Data Rates for GSM Evolution (EDGE)

A

Early cellular telephone technology that used a SIM card; obsolete.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

360
Q

Enhanced Interior Gateway Routing Protocol (EIGRP)

A

Cisco’s proprietary hybrid protocol that has elements of both distance vector and link state routing.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

361
Q

Enhanced Small Form-Factor Pluggable (SFP+)

A

Fiber-optic connector used in 10 GbE networks.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

362
Q

Environment Limitations

A

With respect to building and upgrading networks, refers to the degree of access to facilities and physical access to physical infrastructure. The type of building or buildings must be considered. Access to the walls and ceilings will factor in the construction of the network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

363
Q

Environmental Monitor

A

Device used in telecommunications rooms that keeps track of humidity, temperature, and more.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

364
Q

Ephemeral Port

A

In TCP/IP communication, an arbitrary number generated by a sending computer that the receiving computer uses as a destination address when sending a return packet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

365
Q

Equipment Limitations

A

With respect to installing and upgrading networks, the degree of usage of any existing equipment, applications, or cabling.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

366
Q

Equipment Rack

A

A metal structure used in equipment rooms to secure network hardware devices and patch panels. Most racks are 19” wide. Devices designed to fit in such a rack use a height measurement called units, or simply U.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

367
Q

ESD (Electrostatic Discharge)

A

The movement of electrons from one body to another. ESD is a real menace to PCs because it can cause permanent damage to semiconductors.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 812). McGraw-Hill Education. Kindle Edition.

368
Q

Ethernet

A

Name coined by Xerox for the first standard of network cabling and protocols. Ethernet is based on a bus topology. The IEEE 802.3 subcommittee defines the current Ethernet specifications.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

369
Q

Ethernet Over Power (EoP)

A

The IEEE 1901 standard, also known as HomePlug HD-PLC, provides high-speed home networking through the building’s existing power infrastructure.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

370
Q

Evil Twin

A

An attack that lures people into logging into a rogue access point that looks similar to a legitimate access point.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

371
Q

Evolved High Speed Packet Access (HSPA+)

A

The final wireless 3G data standard, transferring theoretical maximum speeds up to 168 Mbps, although real-world implementations rarely passed 10 Mbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

372
Q

Executable Viruses

A

Viruses that are literally extensions of executables and that are unable to exist by themselves. Once an infected executable file is run, the virus loads into memory, adding copies of itself to other EXEs that are subsequently run.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

373
Q

Exim

A

E-mail server for every major platform; fast and efficient.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

374
Q

Exit Plan

A

Documents and diagrams that identify the best way out of a building in the event of an emergency. It may also define other procedures to follow.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

375
Q

Extended Service Set (ESS)

A

A single wireless access point servicing a given area that has been extended by adding more access points.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

376
Q

Extended Service Set Identifier (ESSID)

A

An SSID applied to an Extended Service Set as a network naming convention.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

377
Q

Extended Unique Identifier, 48-Bit (EUI-48)

A

The IEEE term for the 48-bit MAC address assigned to a network interface. The first 24 bits of the EUI-48 are assigned by the IEEE as the organizationally unique identifier (OUI).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

378
Q

Extended Unique Identifier, 64-Bit (EUI-64)

A

The last 64 bits of the IPv6 address, which are determined based on a calculation based on a device’s 48-bit MAC address.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

379
Q

Extensible Authentication Protocol (EAP)

A

Authentication wrapper that EAP-compliant applications can use to accept one of many types of authentication. While EAP is a general-purpose authentication wrapper, its only substantial use is in wireless networks.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

380
Q

External Connections

A

A network’s connections to the wider Internet. Also a major concern when setting up a SOHO network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

381
Q

External Databus

A

The primary data highway of all computers. Everything in your computer is tied either directly or indirectly to the EDB.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

382
Q

External Firewall

A

The firewall that sits between the perimeter network and the Internet and is responsible for bearing the brunt of the attacks from the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 813). McGraw-Hill Education. Kindle Edition.

383
Q

External Network Address

A

A number added to the MAC address of every computer on an IPX/SPX network that defines every computer on the network; this is often referred to as a network number.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

384
Q

External Threats

A

Threats to your network through external means; examples include virus attacks and the exploitation of users, security holes in the OS, or weaknesses of the network hardware itself.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

385
Q

Fail Close

A

Defines the condition of doors and locks in the event of an emergency, indicating that the doors should close and lock.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

386
Q

Fail Open

A

Defines the condition of doors and locks in the event of an emergency, indicating that the doors should be open and unlocked.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

387
Q

Frequently Asked Questions (FAQ)

A

Common abbreviation coined by BBS users and spread to Usenet and the Internet. This is a list of questions and answers that pertains to a particular topic, maintained so that users new to the group don’t all bombard the group with similar questions. Examples are “What is the name of the actor who plays X on this show, and was he in anything else?” or “Can anyone list all of the books by this author in the order that they were published so that I can read them in that order?” The common answer to this type of question is “Read the FAQ!”

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

388
Q

Far-End Crosstalk (FEXT)

A

Crosstalk on the opposite end of a cable from the signal’s source.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

389
Q

Fast Ethernet

A

Nickname for the 100-Mbps Ethernet standards. Originally applied to 100BaseT.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

390
Q

Fault Tolerance

A

The capability of any system to continue functioning after some part of the system has failed. RAID is an example of a hardware device that provides fault tolerance for hard drives.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

391
Q

F-Connector

A

A screw-on connector used to terminate small-diameter coaxial cable such as RG-6 and RG-59 cables.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

392
Q

Federal Communications Commission (FCC)

A

In the United States, regulates public airwaves and rates PCs and other equipment according to the amount of radiation emitted.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

393
Q

Fiber Distributed Data Interface (FDDI)

A

Older technology fiber-optic network used in campus-sized installations. It transfers data at 100 Mbps and uses a token bus network protocol over a ring topology.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

394
Q

Fiber Optic Cable

A

A high-speed physical medium for transmitting data that uses light rather than electricity to transmit data and is made of high-purity glass fibers sealed within a flexible opaque tube. Much faster than conventional copper wire.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 814). McGraw-Hill Education. Kindle Edition.

395
Q

Fiber Channel (FC)

A

A self-contained, high-speed storage environment with its own storage arrays, protocols, cables, and switches. Fibre Channel is a critical part of storage area networks (SANs).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

396
Q

File Hashing

A

When the download provider hashes the contents of a file and publishes the resulting message digest.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

397
Q

File Server

A

A computer designated to store software, courseware, administrative tools, and other data on a local or wide area network (WAN). It “serves” this information to other computers via the network when users enter their personal access codes.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

398
Q

File Transfer Protocol (FTP)

A

A set of rules that allows two computers to talk to one another as a file transfer is carried out. This is the protocol used when you transfer a file from one computer to another across the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

399
Q

Fire Ratings

A

Ratings developed by Underwriters Laboratories (UL) and the National Electrical Code (NEC) to define the risk of network cables burning and creating noxious fumes and smoke.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

400
Q

Firewall

A

A device that restricts traffic between a local network and the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

401
Q

FireWire

A

An IEEE 1394 standard to send wide-band signals over a thin connector system that plugs into TVs, VCRs, TV cameras, PCs, and so forth. This serial bus developed by Apple and Texas Instruments enables connection of 60 devices at speeds ranging from 100 to 800 Mbps.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

402
Q

First Responder

A

The person or robot whose job is to react to the notification of a possible computer crime by determining the severity of the situation, collecting information, documenting findings and actions, and providing the information to the proper authorities.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

403
Q

Flat Name Space

A

A naming convention that gives each device only one name that must be unique. NetBIOS uses a flat name space. TCP/IP’s DNS uses a hierarchical name space.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

404
Q

Flat-Surface Connector

A

Early fiber-optic connector that resulted in a small gap between fiber-optic junctions due to the flat grind faces of the fibers. It was replaced by Angled Physical Contact (APC) connectors.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

405
Q

Flood Guard

A

Technology in modern switches that can detect and block excessive traffic.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

406
Q

Flow

A

A stream of packets from one specific place to another.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

407
Q

Flow Cache

A

Stores sets of flows for interpretation and analysis. See also flow.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

408
Q

Forensics Report

A

A document that describes the details of gathering, securing, transporting, and investigating evidence.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

409
Q

Forward Lookup Zones

A

The storage area in a DNS server to store the IP addresses and names of systems for a particular domain or domains.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 815). McGraw-Hill Education. Kindle Edition.

410
Q

Forward Proxy Server

A

Server that acts as middleman between clients and servers, making requests to network servers on behalf of clients. Results are sent to the proxy server, which then passes them to the original client. The network servers are isolated from the clients by the forward proxy server.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

411
Q

Fractional T1 Access

A

A service provided by many telephone companies wherein customers can purchase a number of individual channels in a T1 line in order to save money.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

412
Q

Frame

A

A defined series of binary data that is the basic container for a discrete amount of data moving across a network. Frames are created at Layer 2 of the OSI model.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

413
Q

Frame Check Sequence (FCS)

A

A sequence of bits placed in a frame that is used to check the primary data for errors.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

414
Q

Frame Relay

A

An extremely efficient data transmission technique used to send digital information such as voice, data, LAN, and WAN traffic quickly and cost-efficiently to many destinations from one port.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

415
Q

FreeRADIUS

A

Free RADIUS server software for UNIX/Linux systems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

416
Q

Freeware

A

Software that is distributed for free with no license fee.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

417
Q

Frequency Division Multiplexing (FDM)

A

A process of keeping individual phone calls separate by adding a different frequency multiplier to each phone call, making it possible to separate phone calls by their unique frequency range.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

418
Q

Frequency Mismatch

A

Problem in older wireless networks with manual settings where the WAP transmitted on one channel and a wireless client was set to access on a different channel.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

419
Q

Frequency Hopping Spread Spectrum (FHSS)

A

A spread-spectrum broadcasting method defined in the 802.11 standard that sends data on one frequency at a time, constantly shifting (or hopping) frequencies.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

420
Q

FUBAR

A

Fucked Up Beyond All Recognition

421
Q

Full Backup

A

Archive created where every file selected is backed up, and the archive bit is turned off for every file backed up.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

422
Q

Full Duplex

A

Any device that can send and receive data simultaneously.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

423
Q

Fully Meshed Topology

A

A mesh network where every node is directly connected to every other node.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

424
Q

Fully Qualified Domain Name (FQDN)

A

The complete DNS name of a system, from its host name to the top-level domain name. Textual nomenclature to a domain-organized resource. It is written left to right, with the host name on the left, followed by any hierarchical subdomains within the top-level domain on the right. Each level is separated from any preceding or following layer by a dot (.).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 816). McGraw-Hill Education. Kindle Edition.

425
Q

Gain

A

The strengthening and focusing of radio frequency output from a wireless access point (WAP).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

426
Q

Gateway Router

A

A router that acts as a default gateway in a TCP/IP network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

427
Q

General Logs

A

Logs that record updates to applications.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

428
Q

Geofencing

A

The process of using a mobile device’s built-in GPS capabilities and mobile networking capabilities to set geographical constraints on where the mobile device can be used.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

429
Q

Get (SNMP)

A

A query from an SNMP manager sent to the agent of a managed device for the status of a management information base (MIB) object.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

430
Q

Giga

A

The prefix that generally refers to the quantity 1,073,741,824. One gigabyte is 1,073,741,824 bytes. With frequencies, in contrast, giga- often refers to one billion. One gigahertz is 1,000,000,000 hertz.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

431
Q

Gigabit Interface Converter (GBIC)

A

Modular port that supports a standardized, wide variety of gigabit interface modules.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

432
Q

Gigabyte

A

1024 megabytes.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

433
Q

Global Routing Prefix

A

The first 48 bits of an IPv6 unicast address, used to get a packet to its destination. See also network ID.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

434
Q

Global System for Mobile (GSM)

A

Early cellular telephone networking standard; obsolete.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

435
Q

Global Unicast Address

A

A second IPv6 address that every system needs in order to get on the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

436
Q

Grandfather, Father, Son (GFS)

A

A tape rotation strategy used in data backups.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

437
Q

Graphing

A

Type of software that creates visual representations and graphs of data collected by SNMP managers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

438
Q

Greenfield Mode

A

One of three modes used with 802.11n wireless networks wherein everything is running at higher speed.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

439
Q

Ground Loop

A

A voltage differential that exists between two different grounding points.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

440
Q

Group Policy

A

A feature of Windows Active Directory that allows an administrator to apply policy settings to network users en masse.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

441
Q

Group Policy Object (GPO)

A

Enables network administrators to define multiple rights and permissions to entire sets of users all at one time.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 817). McGraw-Hill Education. Kindle Edition.

442
Q

Groups

A

Collections of network users who share similar tasks and need similar permissions; defined to make administration tasks easier.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

443
Q

Guest

A

In terms of virtualization, an operating system running as a virtual machine inside a hypervisor.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

444
Q

Guest Network

A

A network that can contain or allow access to any resource that management deems acceptable to be used by insecure hosts that attach to the guest network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

445
Q

H.320

A

A standard that uses multiple ISDN channels to transport video teleconferencing (VTC) over a network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

446
Q

H.323

A

A VoIP standard that handles the initiation, setup, and delivery of VoIP sessions.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

447
Q

Hackers

A

People who break into computer systems. Those with malicious intent are sometimes considered black hat hackers and those who do so with a positive intent (such as vulnerability testing) are regularly referred to as white hat hackers. Of course, there are middle-ground hackers: gray hats.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

448
Q

Half-Duplex

A

Any device that can only send or receive data at any given moment.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

449
Q

Hardening

A

Applying security hardware, software, and processes to your network to prevent bad things from happening.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

450
Q

Hardware Appliance

A

Physical network device, typically a “box” that implements and runs software or firmware to perform one or a multitude of tasks. Could be a firewall, a switch, a router, a print server, or one of many other devices.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

451
Q

Hardware Tools

A

Tools such as cable testers, TDRs, OTDRs, certifiers, voltage event recorders, protocol analyzers, cable strippers, multimeters, tone probes/generators, butt sets, and punchdown tools used to configure and troubleshoot a network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

452
Q

Hash

A

A mathematical function used in cryptography that is run on a string of binary digits of any length that results in a value of some fixed length.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

453
Q

HDMI Ethernet Channel (HEC)

A

Ethernet-enabled HDMI ports that combine video, audio, and data on a single cable.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

454
Q

Header

A

First section of a frame, packet, segment, or datagram.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

455
Q

Heating, Ventilation, and Air Conditioning (HVAC)

A

All of the equipment involved in heating and cooling the environments within a facility. These items include boilers, furnaces, air conditioners and ducts, plenums, and air passages.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

456
Q

Hex (Hexadecimal)

A

Hex symbols based on a numbering system of 16 (computer shorthand for binary numbers), using 10 digits and 6 letters to condense zeroes and ones to binary numbers. Hex is represented by digits 0 through 9 and alpha A through F, so that 09h has a value of 9, and 0Ah has a value of 10.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

457
Q

Hierarchical Name Space

A

A naming scheme where the full name of each object includes its position within the hierarchy. An example of a hierarchical name is www.totalseminars.com, which includes not only the host name, but also the domain name. DNS uses a hierarchical name space scheme for fully qualified domain names (FQDNs).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 818). McGraw-Hill Education. Kindle Edition.

458
Q

High Availability (HA)

A

A collection of technologies and procedures that work together to keep an application available at all times.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

459
Q

High Speed WAN Internet Cards

A

A type of router expansion card that enables connection to two different ISPs.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

460
Q

History Logs

A

Logs that track the history of how a user or users access network resources, or how network resources are accessed throughout the network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

461
Q

Home Automation

A

The process of remotely controlling household devices, such as lights, thermostats, cameras, and washer and dryer.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

462
Q

Home Page

A

Either the Web page that your browser is set to use when it starts up or the main Web page for a business, organization, or person. Also, the main page in any collection of Web pages.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

463
Q

Honeynet

A

The network created by a honeypot in order to lure in hackers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

464
Q

Honeypot

A

An area of a network that an administrator sets up for the express purpose of attracting a computer hacker. If a hacker takes the bait, the network’s important resources are unharmed and network personnel can analyze the attack to predict and protect against future attacks, making the network more secure.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

465
Q

Hop

A

The passage of a packet through a router.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

466
Q

Hop Count

A

An older metric used by RIP routers. The number of routers that a packet must cross to get from a router to a given network. Hop counts were tracked and entered into the routing table within a router so the router could decide which interface was the best one to forward a packet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

467
Q

Horizontal Cabling

A

Cabling that connects the equipment room to the work areas.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

468
Q

Host

A

A single device (usually a computer) on a TCP/IP network that has an IP address; any device that can be the source or destination of a data packet. Also, a computer running multiple virtualized operating systems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

469
Q

Host ID

A

The portion of an IP address that defines a specific machine in a subnet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

470
Q

Host Name

A

An individual computer name in the DNS naming convention.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

471
Q

Host-Based Anti-Malware

A

Anti-malware software that is installed on individual systems, as opposed to the network at large.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

472
Q

Host-Based Firewall

A

A software firewall installed on a “host” that provides firewall services for just that machine, such as Windows Firewall.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

473
Q

Host Name

A

Command-line tool that returns the host name of the computer it is run on.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 819). McGraw-Hill Education. Kindle Edition.

474
Q

Hosts File

A

The predecessor to DNS, a static text file that resides on a computer and is used to resolve DNS host names to IP addresses. Automatically mapped to a host’s DNS resolver cache in modern systems. The hosts file has no extension.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

475
Q

Host-to-Host

A

Type of VPN connection in which a single host establishes a link with a remote, single host.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

476
Q

Host Site

A

A complete backup facility to continue business operations. It is considered “hot” because it has all resources in place, including computers, network infrastructure, and current backups, so that operations can commence within hours after occupation.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

477
Q

Hotspot

A

A wireless access point that is connected to a cellular data network, typically 4G. The device can route Wi-Fi to and from the Internet. Hotspots can be permanent installations or portable. Many cellular telephones have the capability to become a hotspot.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

478
Q

HTML (Hypertext Markup Language)

A

An ASCII-based script-like language for creating hypertext documents like those on the World Wide Web.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

479
Q

HTTP over SSL (HTTPS)

A

A secure form of HTTP in which hypertext is encrypted by Transport Layer Security (TLS) before being sent onto the network. It is commonly used for Internet business transactions or any time where a secure connection is required. The name reflects the predecessor technology to TLS called Secure Sockets Layer (SSL). See also Hypertext Transfer Protocol (HTTP) and Secure Sockets Layer (SSL).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

480
Q

Hub

A

An electronic device that sits at the center of a star topology network, providing a common point for the connection of network devices. In a 10BaseT Ethernet network, the hub contains the electronic equivalent of a properly terminated bus cable. Hubs are rare today and have been replaced by switches.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

481
Q

Human Machine Interface (HMI)

A

In a distributed control system (DCS), a computer or set of controls that exists between a controller and a human operator. The human operates the HMI, which in turn interacts with the controller.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

482
Q

Hybrid Cloud

A

A conglomeration of public and private cloud resources, connected to achieve some target result. There is no clear line that defines how much of a hybrid cloud infrastructure is private and how much is public.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

483
Q

Hybrid Topology

A

A mix or blend of two different topologies. A star-bus topology is a hybrid of the star and bus topologies.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

484
Q

Hypertext

A

A document that has been marked up to enable a user to select words or pictures within the document, click them, and connect to further information. The basis of the World Wide Web.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 820). McGraw-Hill Education. Kindle Edition.

485
Q

Hypertext Transfer Protocol (HTTP)

A

Extremely fast protocol used for network file transfers on the World Wide Web.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

486
Q

Hypertext Transfer Protocol over SSL (HTTPS)

A

Protocol to transfer hypertext from a Web server to a client in a secure and encrypted fashion. Uses Transport Layer Security (TLS) rather than Secure Sockets Layer (SSL) to establish a secure communication connection between hosts. It then encrypts the hypertext before sending it from the Web server and decrypts it when it enters the client. HTTPS uses port 443.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

487
Q

Hypervisor

A

In virtualization, a layer of programming that creates, supports, and manages a virtual machine. Also known as a virtual machine manager (VMM).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

488
Q

ICS (Industrial Control System)

A

A centralized controller where the local controllers of a distributed control system (DCS) meet in order for global changes to be made.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

489
Q

ICS (Internet Connection Sharing)

A

Also known simply as Internet sharing, the technique of enabling more than one computer to access the Internet simultaneously using a single Internet connection. When you use Internet sharing, you connect an entire LAN to the Internet using a single public IP address.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

490
Q

ICS Server

A

Unit in a distributed control system (DCS) that can be used to manage global changes to the controllers.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

491
Q

IEEE (Institute of Electrical and Electronics Engineers)

A

The leading standards-setting group in the United States.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

492
Q

IEEE 802.2

A

IEEE subcommittee that defined the standards for Logical Link Control (LLC).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

493
Q

IEEE 802.3

A

IEEE subcommittee that defined the standards for CSMA/CD (a.k.a. Ethernet).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

494
Q

IEEE 802.11

A

IEEE subcommittee that defined the standards for wireless.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

495
Q

IEEE 802.14

A

IEEE subcommittee that defined the standards for cable modems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

496
Q

IEEE 802.16

A

A wireless standard (also known as WiMAX) with a range of up to 30 miles.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

497
Q

IEEE 1284

A

The IEEE standard for the now obsolete parallel communication.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

498
Q

IEEE 1394

A

IEEE standard for FireWire communication.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

499
Q

IEEE 1905.1

A

Standard that integrates Ethernet, Wi-Fi, Ethernet over power lines, and Multimedia over Coax (MoCA).

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

500
Q

IETF (Internet Engineering Task Force)

A

The primary standards organization for the Internet.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

501
Q

ifconfig

A

A command-line utility for Linux servers and workstations that displays the current TCP/IP configuration of the machine, similar to ipconfig for Windows systems. The newer command-line utility, ip, is replacing ifconfig on most systems.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 821). McGraw-Hill Education. Kindle Edition.

502
Q

IMAP (Internet Message Access Protocol)

A

An alternative to POP3. Currently in its fourth revision, IMAP4 retrieves e-mail from an e-mail server like POP3, but has a number of features that make it a more popular e-mail tool. IMAP4 supports users creating folders on the e-mail server, for example, and allows multiple clients to access a single mailbox. IMAP uses TCP port 143.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

503
Q

Impedance

A

The amount of resistance to an electrical signal on a wire. It is used as a relative measure of the amount of data a cable can handle.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

504
Q

Implicit Deny

A

The blocking of access to any entity that has not been specifically granted access. May also be known as implicit deny any. An example might be a whitelist ACL. Any station that is not in the whitelist is implicitly denied access.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

505
Q

In-Band Management

A

Technology that enables managed devices such as a switch or router to be managed by any authorized host that is connected to that network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

506
Q

Inbound Traffic

A

Packets coming in from outside the network.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

507
Q

Incident

A

Any negative situation that takes place within an organization.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

508
Q

Incident Response

A

Reaction to any negative situations that take place within an organization that can be stopped, contained, and remediated without outside resources.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

509
Q

Incremental Backup

A

Backs up all files that have their archive bits turned on, meaning they have been changed since the last backup. This type of backup turns the archive bits off after the files have been backed up.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

510
Q

Independent Basic Service Set (IBSS)

A

A basic unit of organization in wireless networks formed by two or more wireless nodes communicating in ad hoc mode.

Meyers, Mike; Meyers, Mike. CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007) (p. 822). McGraw-Hill Education. Kindle Edition.

CompTia Network+ (1 decks)

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