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Networking 101 > Full > Flashcards

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1
Q

Which statement describes an advantage of networks?

A

Networks enable multiple users to share resources.

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2
Q

Which network model ensures that no computer on the network has more authority than another?

A

peer-to-peer

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3
Q

A common way of sharing resources on a peer-to-peer network is by modifying the ____ controls using the computer’s operating system.

A

file-sharing

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4
Q

____ networks are the most popular type of network for medium- and large-scale organizations.

A

Client/server

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5
Q

A ____ network is confined to a relatively small space.

A

LAN

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6
Q

Often, separate LANs are interconnected and rely on several ____ running many different applications and managing resources other than data.

A

servers

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7
Q

A ____ network connects clients and servers from multiple buildings.

A

WAN

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8
Q

A ____ is a specialized device that allows multiple networks or multiple parts of one network to connect and exchange data.

A

connectivity device

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9
Q

Which network topology is the most common?

A

star

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10
Q

____ are the distinct units of data that are exchanged between nodes on a network.

A

Packets

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11
Q

____ services refer to the capability of a server to share data files, applications, and disk storage space.

A

File

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12
Q

____ services allow remote users to connect to the network.

A

Access

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13
Q

The phenomenon of offering multiple types of communications services on the same network is known as ____.

A

convergence

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14
Q

Which type of service supports e-mail?

A

communications

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15
Q

____ provide a Web-based client for checking e-mail.

A

Mail servers

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16
Q

Hardware diagnosis and failure alert are handled by ____.

A

network management services

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17
Q

Security auditing is handled by ____.

A

network management services

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18
Q

Dependability is a characteristic of ____.

A

soft skills

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19
Q

____ is a popular career development tool for job seekers and a measure of an employee’s qualifications for employers.

A

Certification

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20
Q

Which certification requires candidates to pass lab exams?

A

Cisco CCIE

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21
Q

Standards define the ____ performance of a product or service.

A

minimum acceptable

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22
Q

The goal of ____ is to establish international technological standards to facilitate the global exchange of information and barrier free trade.

A

ISO

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23
Q

The ____ is a specialized United Nations agency that provides developing countries with technical expertise and equipment to advance those nations’ technological bases.

A

ITU

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24
Q

____ oversees the IAB (Internet Architecture Board).

A

ISOC

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25
Q

Which statement accurately describes the OSI model?

A

It describes a theoretical representation of what happens between two nodes communicating on a network.

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26
Q

Which OSI model layer initiates the flow of information?

A

Application

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27
Q

Which OSI model layer manages data encryption?

A

Presentation

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28
Q

In which OSI model layer does TCP operate?

A

Transport

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29
Q

Which type of protocol is useful when data must be transferred quickly?

A

connectionless

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30
Q

Transport layer protocols break large data units into ____.

A

segments

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31
Q

____ is the process of reconstructing segmented data.

A

Reassembly

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32
Q

The process of determining the best path from Point A on one network to Point B on another is known as ____.

A

routing

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33
Q

In which OSI model layer does IP operate?

A

Network

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34
Q

Which Data Link sublayer manages flow control?

A

LLC

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35
Q

Which Data Link sublayer manages access to the physical medium?

A

MAC

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36
Q

The ____ is a fixed number associated with a device’s NIC.

A

physical address

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37
Q

In which OSI model layer do hubs operate?

A

Physical

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38
Q

In which OSI model layer(s) do NICs operate?

A

Physical and Data Link

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39
Q

Which IEEE standard describes Ethernet?

A

802.3

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40
Q

Which IEEE standard describes specifications for wireless transmissions?

A

802.11

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41
Q

The distance between corresponding points on a wave’s cycle is called its ____.

A

wavelength

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42
Q

The byte 00001110 means ____ on a digital network.

A

14

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43
Q

In modulation, a simple wave called a(n) ____ wave, is combined with another analog signal to produce a unique signal that gets transmitted from one node to another.

A

carrier

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44
Q

When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.

A

full-duplex

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45
Q

____ is a technology used with fiber-optic cable, which enables one fiber-optic connection to carry multiple light signals simultaneously.

A

WDM (wavelength division multiplexing)

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46
Q

The data transmission characteristic most frequently discussed and analyzed by networking professionals is ____.

A

throughput

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47
Q

One of the most common transmission flaws affecting data signals is ____.

A

noise

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48
Q

The most significant factor in choosing a transmission method is its ____.

A

throughput

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49
Q

The more twists per foot in a pair of wires, the more resistant the pair will be to ____.

A

cross talk

50
Q

Modern LANs use ____ or higher wiring.

A

Cat 5

51
Q

Serial refers to a style of data transmission in which the pulses that represent bits follow one another along a ____ transmission line.

A

single

52
Q

____ describes a popular serial data transmission method.

A

EIA/TIA RS-232 (Recommended Standard 232)

53
Q

Which connector is used in RS-232 transmissions?

A

DB-25

54
Q

The serial interface on the back of the connectivity device is often labeled “____.”

A

Console

55
Q

Which term describes the hardware that makes up the enterprise-wide cabling system?

A

cable plant

56
Q

Which standard is also known as structured cabling?

A

TIA/EIA Commercial Building Wiring Standard

57
Q

The points where circuits interconnect with other circuits is known as ____.

A

cross-connect facilities

58
Q

Which term identifies a room containing connectivity for groups of workstations in its area?

A

telecommunications closet

59
Q

____ describes wiring that connects workstations to the closest telecommunications closet.

A

Horizontal wiring

60
Q

Many network problems can be traced to poor cable ____ techniques.

A

installation

61
Q

TCP is a(n) ____ subprotocol.

A

connection-oriented

62
Q

A(n) ____ number is the address on a host where an application makes itself available to incoming or outgoing data.

A

port

63
Q

____ is more efficient than TCP for carrying messages that fit within one data packet.

A

UDP

64
Q

A UDP header contains ____fields.

A

four

65
Q

The subprotocol that enables TCP/IP to internetwork - that is, to traverse more than one LAN segment and more than one type of network through a router is ____.

A

IP

66
Q

____ operates at the Network layer and manages multicasting.

A

IGMP

67
Q

____ ARP table entries are created when a client makes an ARP request that cannot be satisfied by data already in the ARP table.

A

Dynamic

68
Q

In the TCP/IP protocol suite, ____ is the core protocol responsible for logical addressing.

A

IP

69
Q

In IPv4 addressing, each IP address is a unique ____ number.

A

32-bit

70
Q

In IPv4 addressing, a node with an IP address of 168.34.88.29 belongs to a Class ____ network.

A

B

71
Q

In IPv4 addressing, an IP address whose first octet is in the range of 192–223 belongs to a Class ____ network.

A

C

72
Q

In dotted decimal notation, a(n) ____ separates each decimal.

A

period

73
Q

In most cases, BOOTP has been surpassed by the more sophisticated IP addressing utility, ____.

A

DHCP

74
Q

A(n) ____ address represents any one interface from a group of interfaces, any one of which can accept a transmission.

A

anycast

75
Q

In IPv6, each address contains a(n) ____, or a variable-length field at the beginning of the address that indicates what type of address it is.

A

Format Prefix

76
Q

If the standard port number for the Telnet service is 23, a host whose IPv4 address is 10.43.3.87 has a socket address for Telnet of ____.

A

10.43.3.87:23

77
Q

In the domain name www.google.com, ____ is the top-level domain (TLD).

A

com

78
Q

____ is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite.

A

Telnet

79
Q

____ is a simple Application layer protocol used to synchronize the clocks of computers on a network.

A

NTP

80
Q

____ is a utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating with the network.

A

PING

81
Q

A physical topology ____.

A

depicts a network in broad scope

82
Q

Without ____, a bus network would suffer from signal bounce.

A

terminators

83
Q

In a ring network, each workstation acts as a(n) ____ for the transmission.

A

repeater

84
Q

A complex combination of topologies is known as a ____ topology.

A

hybrid

85
Q

The most common logical topologies are ____ and ring.

A

bus

86
Q

A ____ is simply a linked series of devices.

A

daisy-chain

87
Q

In packet switching, when packets reach their destination node, the node ____ them based on their control information.

A

reassembles

88
Q

Collectively, MPLS labels are sometimes called a ____.

A

shim

89
Q

All Ethernet networks, independent of their speed or frame type, use an access method called ____.

A

CSMA/CD

90
Q

A ____ occurs when two transmissions interfere with each other.

A

collision

91
Q

On an Ethernet network, a(n) ____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.

A

collision domain

92
Q

1000Base-T is a standard for achieving throughputs ____ times faster than Fast Ethernet over copper cable.

A

10

93
Q

The most common 1-Gigabit Ethernet standard in use today is ____.

A

1000Base-LX

94
Q

1000Base-SX has a maximum throughput of ____.

A

1 Gbps

95
Q

The 10-gigabit fiber optic standard with the shortest segment length is ____.

A

10GBase-SR

96
Q

In the 10GBase-LR standard, the L stands for ____.

A

long reach

97
Q

Given their long-distance capabilities, 10GBase-ER and 10GBase-EW are best suited for use on ____.

A

WANs

98
Q

Within Ethernet frame types, the ____ signals to the receiving node that data is incoming and indicates when the data flow is about to begin.

A

preamble

99
Q

Together, the FCS and the header make up the ____-byte “frame” for the data.

A

18

100
Q

The Ethernet II frame type contains a 2-byte ____ field that differentiates it from other Ethernet frame types.

A

type

101
Q

Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.

A

nonroutable

102
Q

The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.

A

PSTN

103
Q

A ____ connection is one in which a user connects her computer, via a modem, to a distant network and stays connected for a finite period of time.

A

dial-up

104
Q

The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____.

A

local loop

105
Q

____ is an updated, digital version of X.25 that also relies on packet switching.

A

Frame relay

106
Q

ISDN PRI uses ____ B channels and one 64-Kbps D channel.

A

23

107
Q

The speed of a T-carrier depends on its ____ level.

A

signal

108
Q

A ____ aggregates multiple DSL subscriber lines and connects them to the carrier’s CO.

A

DSLAM

109
Q

Broadband cable requires many subscribers to share the same local line, thus raising concerns about ____ and actual (versus theoretical) throughput.

A

security

110
Q

What sets ATM apart from Ethernet is its ____ size.

A

fixed packet

111
Q

SONET’s extraordinary ____ results from its use of a double-ring topology over fiber-optic cable.

A

fault tolerance

112
Q

The data rate of a particular SONET ring is indicated by its ____, a rating that is internationally recognized by networking professionals and standards organizations.

A

OC (Optical Carrier) level

113
Q

In wireless communication, to exchange information, two antennas must be tuned to the same ____.

A

frequency

114
Q

____ is a significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves.

A

Interference

115
Q

In the case of connecting two WLANs, access points could be as far as ____ feet apart.

A

1000

116
Q

The average geographic range for an 802.11a antenna is ____ meters.

A

20

117
Q

____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.

A

iwconfig

118
Q

If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.

A

interference

119
Q

Most satellites circle the Earth ____ miles above the equator in a geosynchronous orbit.

A

22,300

120
Q

Clients are able to exchange signals with satellites as long as they have a ____ path.

A

line-of-sight

Networking 101 (1 decks)

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