Deck 9: Communications and Networks

Question 1

Figure 9-1 As shown in Figure 9-1, a(n) ____ is a network that covers a large geographic area, such as a city, country, or the world, using a communications channel that combines many types of media.

A) local area network (LAN)
B) metropolitan area network (MAN)
C) wide area network (WAN)
D) variable area network (VAN)

Answer 1

C

Question 2

Two examples of ____ are cable television lines and telephone lines.

A) sending devices
B) communications channels
C) receiving devices
D) communications devices

Answer 2

B

Question 3

____ is a real-time Internet communications service that allows wireless mobile devices to exchange messages with one or more mobile devices or online users.

A) A chat room
B) Wireless instant messaging
C) MMS
D) Voice mail

Answer 3

B

Question 4

Groupware is a component of a broad concept called ____, which includes network hardware and software that enables group members to communicate, manage projects, schedule meetings, and make group decisions.

A) public Internet access
B) workgroup computing
C) Web services
D) short message service

Question 5

A print server is a dedicated server that ____.

A) stores and manages files
B) manages printers and print jobs
C) stores and provides access to a database
D) manages network traffic (activity)

Question 6

The design of computers, devices, and media in a network, sometimes called the ____, is categorized as either client/server or peer-to-peer.

A) network topology
B) network architecture
C) network standard
D) network protocol

Question 7

A ____ is a legal agreement that permits users to install software on multiple computers, usually at a volume discount.

A) network license
B) server license
C) peer license
D) site license

Question 8

____ allows users to share documents with others in real time.

A) An online meeting
B) Internet telephony
C) Voice mail
D) Internet printing

Question 9

____ can serve as sending and receiving devices in a communications system.

A) Mainframe computers and servers
B) Desktop computers and notebook computers
C) Tablet PCs and PDAs
D) All of the above

Question 10

Most hot spots span from ____ feet.

A) 10-30
B) 30-100
C) 100-300
D) 300-1500

Question 11

Each computer or device on a local area network, called a ____, often shares resources such as printers, large hard disks, and programs.

A) hub
B) server
C) token
D) node

Question 12

A type of communications device that connects a communications channel to a sending or receiving device is a ____.

A) modem
B) server
C) PDA
D) all of the above

Question 13

A ____ is a high-speed network that connects networks in an area such as a city or town and handles the bulk of communications activity across that region.

A) local area network (LAN)
B) metropolitan area network (MAN)
C) wide area network (WAN)
D) variable area network (VAN)

Question 14

A GPS receiver is a handheld, mountable, or embedded device that contains all of the following except a(n) ____.

A) radio receiver
B) antenna
C) floppy disk
D) processor

Question 15

A voice mailbox is a(n) ____ in a voice mail system.

A) storage location on a hard disk
B) input device
C) processor
D) output device

Question 16

A ____ is a network that connects computers and devices in a limited geographical area, such as a home, school computer laboratory, or office building.

A) local area network (LAN)
B) metropolitan area network (MAN)
C) wide area network (WAN)
D) variable area network (VAN)

Question 17

____ is a conversation that takes place over the Internet using a telephone connected to a desktop computer, mobile computer, or mobile device.

A) A chat room
B) A newsgroup
C) Internet telephony
D) An online meeting

Question 18

A file server is a dedicated server that ____.

A) stores and manages files
B) manages printers and print jobs
C) stores and provides access to a database
D) manages network traffic (activity)

Question 19

Businesses are the primary users of ____ because this technology provides a means for departments to communicate with each other, suppliers, vendors, and with clients.

A) groupware
B) Web services
C) global positioning systems
D) short message services

Question 20

Most businesses use a standard, such as ____, that defines how data transmits across telephone lines or other means.

A) PCS (personal communications services)
B) EFT (electronic funds transfer)
C) PDS (public data services)
D) EDI (electronic data interchange)

Question 21

When a computer sends data over the Internet, the data is divided into small pieces, or ____.

A) bundles
B) packets
C) slices
D) baskets

Question 22

Figure 9-4 As shown in Figure 9-4, a ____ network is a network topology in which a cable forms a closed loop, with all computers and devices arranged along it.

A) bus
B) star
C) ring
D) variable

Question 23

With ISDN, the same telephone line that could carry only one computer signal now can carry three or more signals at once through the same line, using a technique called ____.

A) packet switching
B) routing
C) multiplexing
D) modulating

Question 24

The risk to a bus network is that ____.

A) devices attached or detached at any point on the bus disrupt the rest of the network
B) the failure of one device usually affects the rest of the network
C) the bus itself might become inoperable
D) all of the above

Question 25

A database server is a dedicated server that ____.

A) stores and manages files
B) manages printers and print jobs
C) stores and provides access to a database
D) manages network traffic (activity)

Question 26

Figure 9-5 On a network such as the one illustrated in Figure 9-5, if one node fails ____.

A) only that node is affected
B) only the nodes before that node are affected
C) only the nodes after that node are affected
D) all the nodes are affected

Question 27

Figure 9-5 On a ____, such as that illustrated in Figure 9-5, all of the computers and devices (nodes) on the network connect to a central device.

A) bus network
B) ring network
C) star network
D) token ring network

Question 28

For data transmission to occur, ____ of a standard telephone line must have a dial-up modem.

A) only the sending end
B) only the receiving end
C) both the sending and receiving ends
D) neither the sending nor receiving end

Question 29

Although ____ are not a type of standard telephone line, they are very popular ways for the home user to connect to the Internet.

A) ISDN lines
B) DSL
C) T-carrier lines
D) cable television (CATV) lines

Question 30

Figure 9-4 A network like the one shown in Figure 9-4 ____ to install.

A) must span a smaller distance than a bus network, and it is more difficult
B) must span a smaller distance than a bus network, but it is easier
C) can span a larger distance than a bus network, but it is more difficult
D) can span a larger distance than a bus network, and it is easier

Question 31

DSL ____.

A) requires a special network card and a DSL modem
B) is much slower than dial-up service
C) is available in all areas
D) all of the above

Question 32

Today, ____ is the most popular LAN technology because it is relatively inexpensive and easy to install and maintain.

A) Ethernet
B) token ring
C) TCP/IP
D) 802.11

Question 33

____ has been adopted as a network standard for Internet communications.

A) Ethernet
B) token ring
C) TCP/IP
D) 802.11

Question 34

The technique of breaking a message into individual packets, sending the packets along the best route available, and then reassembling the data is called ____.

A) packet catching
B) packet building
C) packet switching
D) packet swapping

Question 35

Communications software consists of programs that ____.

A) help users establish a connection to another computer or network
B) manage the transmission of data, instructions, and information
C) provide an interface for users to communicate with one another
D) all of the above

Question 36

A T3 line is ____.

A) slower than a T1 line and quite expensive
B) slower than a T1 line but quite inexpensive
C) equal in speed to 28 T1 lines but quite expensive
D) equal in speed to 28 T1 lines and quite inexpensive

Question 37

One popular use of the ____ network standard is in hot spots that offer mobile users the ability to connect to the Internet with their wireless computers and devices.

A) Ethernet
B) token ring
C) TCP/IP
D) Wi-Fi

Question 38

Figure 9-5 On a network such as the one illustrated in Figure 9-5, the central device that provides a common connection point for nodes on the network is called the ____.

A) hub
B) personal computer
C) printer
D) file server

Question 39

The most popular T-carrier line is the ____.

A) T1 line
B) T2 line
C) T3 line
D) T4 line

Question 40

A network server is a dedicated server that ____.

A) stores and manages files
B) manages printers and print jobs
C) stores and provides access to a database
D) manages network traffic (activity)

Question 41

Physical transmission media used in communications include all of the following except ____.

A) twisted-pair cable
B) coaxial cable
C) broadcast radio cable
D) fiber-optic cable

Question 42

With ____, users type and send short text messages on a smart phone or PDA.

A) WMS
B) XMS
C) SMS
D) TMS

Question 43

____ is an electrical disturbance that can degrade communications.

A) Latency
B) Noise
C) Coax
D) Hub

Question 44

____ allows users to send graphics, pictures, video clips, and sound files, as well as short text messages to another smart phone, PDA, or computer.

A) SMS
B) TMS
C) MMS
D) XMS

Question 45

____ allows users connected to a network to transfer money from one bank account to another via transmission media.

A) EMS
B) VAN
C) VAR
D) EFT

Question 46

A(n) ____ device is a device that initiates an instruction to transmit data, instructions, or information.

A) sending
B) receiving
C) initiating
D) integrated

Question 47

A(n) ____ network uses cellular radio technology to provide users with high-speed Internet connections, as long as they are in the network's range.

A) integrated
B) 2G
C) 3G
D) baseband

Question 48

Broadcast radio is ____ susceptible to noise than physical transmission media but it provides flexibility and portability.

A) slower and more
B) slower and less
C) faster and more
D) faster and less

Question 49

A(n) ____ device is a device that accepts the transmission of data, instructions, or information.

A) sending
B) receiving
C) initiating
D) transceiving

Question 50

Each networked computer in a house can ____.

A) share a single high-speed Internet connection
B) access files and programs on other computers in the house
C) share peripherals such as a printer, scanner, external hard disk, or DVD drive
D) all of the above

Question 51

Fiber-optic cables have all of the following advantages over cables that use wire except ____.

A) lower costs and easier installation and modification
B) faster data transmission and smaller size
C) less susceptible to noise from other devices
D) better security for signals during transmission

Question 52

____ is a category of cellular transmission that transmitted analog data.

A) 1G (first generation)
B) 2G (second generation)
C) 3G (third generation)
D) All of the above

Question 53

A(n) ____ extends the basic home network to include features such as lighting control, thermostat adjustment, and a security system.

A) peripheral home network
B) value-added home network
C) wired home network
D) intelligent home network

Question 54

A(n) ____ is a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the receiver's geographic location.

A) MMS
B) GPS
C) SMS
D) TMS

Question 55

A ____ is a device that provides a central point for cables in a network.

A) hub
B) packet
C) node
D) router

Question 56

A(n) ____ is a third-party business that provides networking services such as secure data and information transfer, storage, e-mail, and management reports.

A) VAN
B) EMS
C) EFT
D) VAR

Question 57

Types of wired home networks include all of the following except ____.

A) Ethernet
B) Wi-Fi
C) powerline cable
D) phoneline

Question 58

Many software products provide a means to ____, or work online, with other users connected to a server.

A) collaborate
B) integrate
C) multiplex
D) concatenate

Question 59

Microwave transmission, sometimes called ____, involves sending signals from one microwave station to another.

A) line-of-sight transmission
B) flexed-point wireless
C) out-of-sight transmission
D) fixed wireless

Question 60

For best performance of a communications channel, ____.

A) bandwidth and latency should be low
B) bandwidth should be low and latency high
C) bandwidth should be high and latency low
D) bandwidth and latency should be high

Question 61

Figure 9-2 On a network such as the one illustrated in Figure 9-2, a(n) ____ computer controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information.

A) host
B) indexed
C) client
D) master

Question 62

____ is a network technology that defines how messages are routed from one end of a network to the other, ensuring the data arrives correctly by dividing it into packets.

A) HTML
B) XML
C) HTTP
D) TCP/IP

Question 63

A DSL ____ sends digital data and information from a computer to a DSL line and receives digital data and information from a DSL line.

A) carrier
B) modem
C) index
D) network card

Question 64

With ____ service, an optical terminal at your house receives the signals and transfers them to a router connected to your computer.

A) ADSL
B) FTTH
C) ATM
D) Fractional T1

Question 65

____ technology uses short-range radio waves to transmit data between two devices.

A) WiMAX
B) Bluetooth
C) FTTH
D) WAP

Question 66

The ____ standard specifies that computers and devices on the network share or pass a special signal, called a token, in a unidirectional manner and in a preset order.

A) bus
B) variable
C) token ring
D) TCP/IP

Question 67

The ____ is the worldwide telephone system that handles voice-oriented telephone calls.

A) intranet
B) extranet
C) PSTN
D) Phone Web

Question 68

The ____ specifies how some wireless mobile devices such as smart phones and PDAs can display the content of Internet services such as the Web, e-mail, chat rooms, and newsgroups.

A) PSTN
B) WAP
C) ISDN
D) DSL

Question 69

____ is a newer network standard developed by IEEE that specifies how wireless devices communicate over the air in a wide area.

A) FTTH
B) WAP
C) FTTB
D) WiMAX

Question 70

____ is a service that carries voice, data, video, and multimedia at extremely high speeds.

A) ATM
B) DSL
C) Fractional T1
D) ADSL

Question 71

____ is a type of DSL that supports faster transmission rates when receiving data (the downstream rate) than when sending data (the upstream rate).

A) ADSL
B) Symmetric digital subscriber line
C) ATM
D) Both A and B

Question 72

____ uses fiber-optic cable to provide extremely high-speed Internet access to home users.

A) ADSL
B) FTTH
C) ATM
D) Fractional T1

Question 73

A(n) ____ is an adapter card, PC Card, or flash card that enables a computer or devices to access a network.

A) EFT
B) ATM
C) NIC
D) ADSL

Question 74

A ____ network is a network topology that consists of a single central cable, to which all computers and other devices connect.

A) bus
B) token ring
C) ring
D) star

Question 75

A ____ network is a home network that uses radio waves, instead of cables, to transmit data.

A) PowerLine
B) HomeRF
C) grid
D) baseband

Question 76

A(n) ____ is a LAN that uses no physical wires.

A) ELAN
B) PLAN
C) WLAN
D) MAN

Question 77

____ is the time it takes a signal to travel from one location to another on a network.

A) Latency
B) Symmetry
C) Frequency
D) Delay register

Question 78

____ is a set of standards for digital transmission of data over standard copper telephone lines.

A) ADSL
B) Ethernet
C) PSTN
D) ISDN

Question 79

The amount of data, instructions, and information that can travel over a communications channel sometimes is called the ____.

A) broadband
B) latency
C) baseband
D) bandwidth

Question 80

____ transmits at fast speeds on existing standard copper telephone wiring, but requires that the user's location and the telephone company's modem be located within a certain distance of each other.

A) FTTH
B) A T-carrier line
C) Cable
D) DSL