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IS 560 > All Together (No Answers Visible) > Flashcards

All Together (No Answers Visible) Flashcards

1
Q

By default, the pathping command sends how many pings per hop?

A

B) 100

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2
Q

Select the component of enterprise level structured cabling that serves as the location where an incoming network interface enters a building and connects with the building’s backbone cabling:

A

D) entrance facility

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3
Q

What is the maximum allowable distance for horizontal wiring?

A

B) 100 m

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4
Q

What RFC outlines recommendations for private IP addresses?

A

B) RFC 1918

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5
Q

Which network routing protocol is a path vector protocol that sends updates between routers using TCP?

A

D) BGP

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6
Q

The segment or datagram protocol data unit exists at what layer of the OSI model?

A

B) Transport Layer

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7
Q

In a TCP segment, what field indicates how many bytes the sender can issue to a receiver while acknowledgement for the segment is outstanding?

A

B) sliding window

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8
Q

Which of the following is not one of the disadvantages of peer-to-peer networks?

A

D) They centralize user account logins

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9
Q

What type of cross-talk occurs between wire pairs near the source of a signal?

A

B) near end cross talk

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10
Q

At what layer of the OSI model do the IP, ICMP, and ARP protocols operate?

A

D) Network

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11
Q

The standard that describes uniform, enterprise-wide cabling systems, regardless of who manufactures or sells the various parts used in the system, can be referred to by what two options below?

A

B) TIA/EIA-568

D) structured cabling

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12
Q

A device that is responsible for modulating digital signals into analog signals, and demodulating analog signals into digital signals at the receiving end, is known as?

A

A) a modem

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13
Q

An open electrical circuit as a result of a failed circuit breaker is considered to be what type of failure system?

A

B) Fail-close

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14
Q

Ethernet exists at what layer of the OSI model?

A

B) Layer 2

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15
Q

What IPv4 protocol handles multicasting for tasks such as videoconferencing or teleconferencing?

A

D) IGMP

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16
Q

What are the two main Transport Layer protocols?

A

C) TCP

D) UDP

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17
Q

Which protocol below is used to make an initial connection between hosts for transferring multimedia data, relying on other protocols once a connection is established?

A

B) SIP

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18
Q

The radius of the maximum arc into which you can loop a cable without impairing data transmission is known as what option below?

A

C) bend radius

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19
Q

Which type of multiplexing is defined by wavelength instead of frequency?

A

A) CWDM

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20
Q

What type of power flaw involves a fluctuation in voltage levels caused by other devices on the network or by EMI?

A

C) noise

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21
Q

What address does ARP work in conjunction with IPv4 to discover? (2)

A

B) MAC

D) physical

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22
Q

What routing protocol criteria is defined as the time it takes to recognize a best path change in the event of a network outage?

A

B) convergence time

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23
Q

What is the industry standard for rack height in rack units?

A

C) 42U

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24
Q

What type of routing protocol enables routers to communicate beyond neighboring routers, allowing each router to create a map of an entire network?

A

B) link state

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25
Q

Which of the following are types of entries an ARP table contains? (2)

A

A) Static

D) Dynamic

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26
Q

What top level domain is used for the air-transport industry?

A

B) .aero

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27
Q

What two items below are commonly expressed as bits transmitted per second?

A

C) throughput

D) bandwidth

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28
Q

Select the two terms below that are used to describe a UPS that provides continuous voltage to a device by switching virtually instantaneously to the battery when it detects a loss of power;

A

B) standby UPS

C) standby power supply

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29
Q

What do the first 24 bits of a MAC address represent?

A

A) Organizationally Unique Identifier

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30
Q

In what network topology are devices daisy-chained together in a single line?

A

A) Bus Topology

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31
Q

What type of power converter changes the voltage of an AC current, such as when power over the main line from an electric company is changed before being delivered to a home?

A

C) transformer

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32
Q

If the use of a pre-existing Ethernet infrastructure is desired for a SAN, what Transport Layer protocol should be utilized?

A

B) iSCSI

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33
Q

The number of times that a wave’s amplitude cycles from its starting point, through its highest amplitude and its lowest amplitude, and back to its starting point over a fixed period of time, is known as what term below?

A

B) frequency

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34
Q

In Linux systems, what file contains the settings for the DHCP service?

A

A) dhcpd.conf

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35
Q

Using DWDM, a single fiber can carry between what two numbers of channels?

A

B) 80

C) 160

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36
Q

What range of ports is referred to as the “well-known” range of ports?

A

A) 0-1023

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37
Q

How many cable pairs are needed for 1000Base-T transmission over CAT5e cable?

A

B) 4

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38
Q

What is the name for a client-server model with one server and many clients, such as when an application is used to watch a live sports event?

A

A) Multicast Distribution

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39
Q

Select the two Transport Layer protocol that are used by SANs:

A

A) Fibre Channel

B) iSCSI

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40
Q

Any computer or device on a network that can be addressed on the local network is referred to as a:

A

B) Node

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41
Q

Using the same network to deliver multiple types of communications services, such as video, voice, and fax is known as:

A

B) Convergence

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42
Q

Select the name of the free, open source software that is by far the most popular DNS server software:

A

B) BIND

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43
Q

What netstat command option lists only current connections, including IP addresses and port numbers?

A

C) -n

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44
Q

What are the last two parts of a host name known as?

A

C) Domain Name

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45
Q

What parameter can be combined with the traceroute command to instruct it to use ICMP echo requests instead of UDP datagrams?

A

C) -i

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46
Q

How many clusters of root servers exist?

A

C) 13

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47
Q

What command below can be used to display a complete summary of all network interfaces in a Windows computer?

A

B) ipconfig /all

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48
Q

One watt is equal to how many volt-amps?

A

A) 1.4

49
Q

An IPv6 address consists of how many bits?

A

D) 128

50
Q

What is the maximum supported throughput of a CAT6 cable?

A

C) 10 Gbps

51
Q

What cable type comes in two different modes, single mode and multimode?

A

C) Fiber Optic

52
Q

Select the maximum allowable distances for horizontal wiring for a span that connects a data jack on a wall to a data closet, and for a span that connects a workstation to the data jack, respectively:

A

B) 90 m

C) 10 m

53
Q

Where is a demarc located in relation to the structured cabling of an enterprise environment?

A

A) in the Main Distribution Frame (MDF)

54
Q

What happens when a router receives a packet with a TTL of 0?

A

B) The router drops the packet and sends an ICMP TTL expired message back to the host

55
Q

The process of adding a header to the data inherited from the layer above is called what option below?

A

B) Encapsulation

56
Q

Which layers of the OSI model are all routers able to interpret?

A

C) 3

D) 4

57
Q

What protocol is commonly used to request configuration files from another computer?

A

D) TFTP

58
Q

Which method of transmission allows signals to travel in both directions over a medium but in only one direction at a time?

A

B) half duplex

59
Q

Select the layer of the OSI model that is responsible for reformatting, compressing, and/or encrypting data in a way that the application on the receiving end can read:

A

B) Presentation

60
Q

WDM divides a beam of light into how many different wavelengths or colors?

A

D) 40

61
Q

What command can be used on a Cisco router to view the routing table?

A

D) show ip route

62
Q

Phone companies make use of what type of multiplexing in order to allow for phone services and DSL services over the same line?

A

B) FDM

63
Q

What is the maximum supported throughput and bandwidth / signal rate of Cat 5e?

A

B) 1000 Mbps

D) 350 MHz

64
Q

What is the maximum distance for 10GBase-ER and 10GBase-EW on a segment of single mode fiber?

A

D) 40km

65
Q

When viewing the routing table on a UNIX system, what flag indicates if a route is a usable route?

A

D) U

66
Q

If a Network layer protocol is aware that a packet is larger than the maximum size for its network, it will divide the packet into smaller packets in a process known as:

A

B) Fragmentation

67
Q

During termination of twisted pair cabling, what should be done to ensure minimal cross talk is introduced?

A

A) No more than 1 inch of the cable should be exposed

68
Q

The IP protocol relies on what other protocol to guarantee delivery of data?

A

C) TCP

69
Q

In order to simplify console access to computers in a rack, what device is typically used to provide a central portal for all devices on the rack?

A

A) KVM switch

70
Q

Standard PoE devices must be provided with how much power in order to function?

A

C) 15.4 watts

71
Q

Which option below reflects the standard impedance of an RG-6 cable?

A

D) 75 ohms

72
Q

The most common multiplexing technology used in conjunction with fiber optics is which option below?

A

A) DWDM

73
Q

A measure of a signal’s strength at any given time is known as which term below?

A

A) amplitude

74
Q

What two ipconfig commands below are used to show DNS resolver cache information and clear the name resolver cache?

A

C) ipconfig /displaydns

D) ipconfig /flushdns

75
Q

When using a Windows domain, what is the domain-level account for each user known as?

A

A) Global Account

76
Q

Equipment racks most commonly come in what two widths?

A

C) 19 in frame

D) 23 in frame

77
Q

What two names are used to descibe the configuration in which internal and external DNS queries are handled by different DNS servers or by a single DNS server that is specially configured to keep internal and external DNS zones separate?

A

B) split DNS

C) split-horizon DNS

78
Q

A modern ASN consists of how many bits?

A

B) 32

79
Q

What component of the backbone runs between a building’s floors and can be used to connect an MDF and IDF or multiple IDFs?

A

C) vertical cross connect

80
Q

A port number, which identifies an application on a host, exists at what level of the OSI model?

A

B) Transport

81
Q

Which of the following options is not a likely source of electromagnetic interference?

A

C) fiber optic cables

82
Q

Static electricity can cause what two types of damage in electronic components?

A

B) Catastrophic failure

C) Upset failure

83
Q

What is NOT one of the three characteristics of TCP in its role as a reliable delivery protocol?

A

C) Framing

84
Q

What is the name of the protocol data unit (PDU) of the Data Link layer?

A

D) Frame

85
Q

Which of the following connectors is the most common for mutlimode fiber?

A

D) MT-RJ

86
Q

What term below is used to describe the outer-most layer of protective covering of a coaxial cable?

A

A) sheath

87
Q

What is the maximum frame size for Ethernet ll frames on a VLAN?

A

C) 1522 bytes

88
Q

What is the minimum category of UTP cable required in order to support Gigabit speeds?

A

C) Cat 5e

89
Q

What TCP field below allows the receiving node to determine whether a TCP segment is corrupted during transmission?

A

A) checksum

90
Q

What two types of IP addresses are used on the internet?

A

A) IPv4

B) IPv6

91
Q

What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?

A

A) Differentiated Services (DiffServ)

92
Q

What mail protocol is used to send mail messages to a server?

A

C) SMTP

93
Q

What two connector types are typically used to terminate RG-6 and RG-59 cables?

A

A) f-connectors

B) BNC

94
Q

Since cable TV and cable internet can share the same coaxial cable, they are considered to be what type of technology?

A

A) broadband

95
Q

When selecting a punch down block, what block type is more suitable for data connections?

A

D) 110 block

96
Q

Ethernet is an example of what type of technology?

A

B) baseband

97
Q

What layer of the OSI model describes how data between applications is synced and recovered if messages don’t arrive intact at the receiving application?

A

C) Session Layer

98
Q

What are two encryption protocols commonly used with the Hypertext Transfer Protocol?

A

B) TLS

C) SSL

99
Q

Which two protocols can be used to gain remote access specifically to a server’s command line interface, securely and unsecurely?

A

A) Telnet

B) SSH

100
Q

HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the OSI model?

A

D) Layer 7

101
Q

Using a form of transmission that allows multiple signals to travel simultaneously over one medium is known as which of the following options?

A

B) multiplexing

102
Q

What command on Linux will display TCP/IP information associated with every interface on the device?

A

B) ifconfig -a

103
Q

Which of the following is not a task handled by a router?

A

A) A router forwards broadcasts over the network

104
Q

What Ethernet standard below is also referred to as “thinnet”?

A

B) 10Base2

105
Q

Frequencies used to convey speech over telephone lines fall between what two frequencies below?

A

B) 300 Hz

C) 3.3 KHz

106
Q

What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network?

A

C) ping

107
Q

The Network Time Protocol service uses what port number?

A

C) UDP 123

108
Q

A standard network switch operates at what layer of the OSI model?

A

B) Layer 2

109
Q

Select the protocol below that is used to synchronize clocks on computers on a network:

A

B) NTP

110
Q

What two mail delivery protocols below can be used by a client application to receive e-mail from a server?

A

A) POP3

D) IMAP4

111
Q

The device where a telecommunications service provider network ends and an organization’s network begins is referred to as what option below?

A

A) Demarc

112
Q

How far away from fluorescent lights or other sources of EMI should cable be installed?

A

A) at least 3 ft

113
Q

The proper handling procedures for substances such as chemical solvents are typically outlined in which of the following options?

A

D) Material Safety Data Sheet (MSDS)

114
Q

A loopback IP address begins with what number?

A

B) 127

115
Q

What versions of the IP protocol are used on networks today?

A

B) IPv4

C) IPv6

116
Q

What physical network topology consists of all connected devices connecting to one central device, such as a switch?

A

D) Star Topology

117
Q

Which method of transmission allows signals to travel in both directions over a medium simultaneously?

A

C) full-duplex

118
Q

At what layer of the OSI model would a TCP or UDP header be added to a payload?

A

B) Layer 4

119
Q

Traditional MAC addresses are broken into two parts. Name these two parts.

A

A) block ID

D) device ID

IS 560 (2 decks)

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