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COMPTIA A+ 220-1001 > Messer - Section 2 > Flashcards

Messer - Section 2 Flashcards

1
Q

IP Data Transmission as “Moving Vans”:

  • Road
  • Van
  • Cargo Area
  • Boxes
A

Road - Ethernet, DSL, or Cable
Van - Internet Protocol
Cargo Area - OSI Layer 4 Encapsulating and Multiplexing TCP and UDP
Boxes - TCP and UDP

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2
Q

TCP

A

Transmission Control Protocol

  • Connection-oriented, formal setup and close
  • “Reliable” Delivery
  • Receiver can manage data sent
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3
Q

UDP

A

User Datagram Protocol

  • Connectionless, no formal open or close
  • “Unreliable” Delivery
  • Sender determines amount of data transmitted
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4
Q

IP Data Transmission between “Houses”

  • Moving Van
  • Origin House
  • Destination House
  • Rooms
A

Moving Van - Move TCP/UDP along “road”
Origin - Origin IP address
Destination - Destination IP address
Rooms - TCP/UDP “box” is dropped in correct port

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5
Q

Non-ephemeral ports

A

Permanent port numbers
Ports 0 - 1023
Usually on a server or service

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6
Q

Ephemeral ports

A

Temporary port numbers
Ports 1024 - 65,535
Determined in real-time by the client

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7
Q

FTP

A

File Transfer Protocol
Sends and receives files between systems
tcp/20, tcp/21

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8
Q

SSH

A

Secure Shell
Encrypted console access
tcp/22

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9
Q

Telnet

A

Telecommunication Network
Insecure console access
tcp/23

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10
Q

SMTP

A

Simple Mail Transfer Protocol
Transfer email between mail servers
tcp/25

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11
Q

DNS

A

Domain Name System
Convert domain names to IP addresses
udp/53, tcp/53

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12
Q

HTTP

A

Hypertext Transfer Protocol
Web server communication
tcp/80

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13
Q

HTTPS

A

Hypertext Transfer Protocol Secure
Web server communication with encryption
tcp/443

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14
Q

POP3

A

Post Office Protocol Version 3
Receive email into an email client
tcp/110

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15
Q

IMAP4

A

Internet Message Access Protocol Version 4
A newer email client protocol
tcp/143

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16
Q

RDP

A

Remote Desktop Protocol
Graphical display of remote devices
tcp/3389

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17
Q

NetBIOS Name Service

A

NetBIOS Name Service
Register, remove, and find Windows services by name
udp/137

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18
Q

NetBIOS Datagram Service

A

NetBIOS Datagram Service
Windows connectionless data transfer
udp/138

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19
Q

NetBIOS Session Service

A

NetBIOS Session Service
Windows connection-oriented data transfer
tcp/139

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20
Q

SMB

A

Server Message Block
Windows file transfers and printer sharing
tcp/445

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21
Q

AFP

A

Apple Filing Protocol
Mac OS file transfers
tcp/548

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22
Q

SLP

A

Service Location Protocol
Find Mac OS services by name
tcp/427, udp/427

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23
Q

DHCP

A

Dynamic Host Configuration Protocol
Automate the IP address configuration process
udp/67, udp/68

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24
Q

LDAP

A

Lightweight Directory Access Protocol
Directory services
tcp/389

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25
SNMP
Simple Network Management Protocol Gather metrics and manage network devices udp/161
26
802.11a
``` 5 GHz Streams N/A Max throughput/stream = 54 Mbit/s Max throughput/total = 54 Mbit/s 20 MHz bandwidths ```
27
802.11b
``` 2.4 GHz Streams N/A Max throughput/stream = 11 Mbit/s Max throughput/total = 11 Mbit/s 22 MHz bandwidths ```
28
802.11g
``` 2.4GHz Streams N/A Max throughput/stream = 54 Mbit/s Max throughput/total = 54 Mbit/s 20 MHz bandwidths ```
29
802.11n
5 GHz and/or 2.4 GHz 4 MIMO Streams Max throughput/stream = 150 Mbit/s Max throughput/total = 600 Mbit/s 20 or 40 MHz (2 contiguous 20 MHz bonded channels) In 2.4 GHz, a 40 MHz channel uses much of bandwidth
30
802.11ac
``` 5 GHz 8 MIMO Streams Max throughput/stream = 866.7 Mbit/s Max throughput/total = 6.8 Gbit/s 40 MHz for 802.11n stations 80 MHz required for 802.11ac stations 160 MHz optional (contiguous channels or non-contiguous bonded channels) ```
31
How many bits long is a NIC physical address
48
32
MAC
Media Access Control | A device's physical address
33
POE
Power Over Ethernet
34
PLC
Power Line Communication
35
Allows network devices such as SOHO routers to be automatically configured, sometimes referred to as needing "zero configuration".
Wifi Protected Setup (WPS)
36
Allows you to access a computer on your internal network from a computer on the internet.
Port forwarding
37
Change the priority of network traffic, such as giving a higher priority to one type of traffic over another. Also known as "Throttling".
Quality of Service (QoS)
38
Limits which devices can access your wireless network by specifying the MAC addresses that are allowed to connect to the network.
MAC filtering
39
To avoid interference from nearby wireless networks, you can change this setting on your wireless network so that it uses a unique frequency.
Dynamic Frequency Selection (DFS)
40
RFID
Radio Frequency Identification
41
NFC
Near Field Communication
42
What is the IEEE spec number that standardized Zigbee?
802.15.4 PAN
43
Which has the longer transmission distance: Zigbee or Z-Wave
Z-Wave
44
Z-Wave operate a the ___ MHz range.
915
45
System prevents intrusions from accessing network
Intrusion Prevention System (IPS)
46
Server that stores and sends emails
Email server
47
Server that automatically assigns IP addresses to hosts on a network
Dynamic Host Control Protocol server (DHCP)
48
Server that accepts logons from users and allows/disallows access to network resources based on the permissions assigned to each user.
Authentication server
49
Server that responds to browser requests using protocols such as HTML
Web server
50
Centralized server used to store documents that users can access.
File server
51
Intermediate server that sits between you and some 3rd party resource such as the Internet.
Proxy server
52
Server used to manage all network hosts from a single location.
Endpoint Management server
53
Server that uses protocols such as IPP, LPD and SMB to provide printing services for host on a network.
Printer server
54
Single device that combines multiple security features such as firewall, URL filtering, content inspection, malware inspection, IDS/IPS, router, switch, etc.
All in one appliance
55
Server that converts domain names to IP addresses
Domain Name Servier (DNS)
56
System that detects intrusions that have occurred on a network by triggering an alert or alarm.
Intrusion Detection System (IDS)
57
System that is considered older technology.
Legacy
58
Systems that are not the normal operating system you work with, but still have connectivity to the network and must be managed.
Embedded
59
Server that acts as a central logging receiver, gathering logging data from network devices
Syslog
60
Server roles used to provide access to the LAN and internet.
DNS, DHCP, Proxy
61
Resolves a friendly name to an IP address
DNS
62
Automatically assigns IP addresses to clients
DHCP
63
Reserves a specific IP address for a networking device
DHCP
64
Provides the IP address of the mail server in your domain
DNS
65
Keeps track of IP addresses for .com, .gov, .org, etc.
DNS
66
Processes discover requests and provides an offer
DHCP
67
Logically separates computers into multiple broadcast domains
VLAN
68
Used by teleworkers to seamlessly connect to their company's internal network
VPN
69
A 128-bit IP address
IPv6
70
A 32-bit IP address
IPv4
71
Translates multiple private IP addresses into a single public IP address
NAT
72
A computer automatically assigned an address beginning with 169.254. What acronym describes this address and why was it assigned
APIPA (Automatic Private IP Addressing) | DHCP is down.
73
DHCP Process
Discover, Offer, Request, Acknowledge
74
How do you test the local loopback IPv6 address?
::1
75
WMN
Wireless Mesh Network
76
What is one thing to keep in mind when measuring resistance with a multimeter?
Make sure no current is flowing through the circuit.
77
Which tool can help determine where a break exists in a given cable run?
Time Domain Reflectometer

COMPTIA A+ 220-1001 (3 decks)

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