True/False
Indicate whether the sentence or statement is true
or false.
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1.
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A
print server is a dedicated server that manages network traffic.
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2.
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In
the token ring LAN technology, multiple tokens exist per the network.
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3.
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To
prevent unauthorized access to data and information, companies protect their intranet or extranet
with a firewall.
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4.
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A
phoneline network interferes with voice and telephone transmissions on a home telephone
line.
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5.
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Microwaves can transmit data at rates up to 4,500 times faster than a dial-up
modem.
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6.
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Transmission from an earth-based station to a satellite is a downlink.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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7.
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A(n)
__________ consists of a continuous electrical wave. a. | radio
signal | c. | digital
signal | b. | analog signal | d. | turn signal | | | | |
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8.
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E-mail (electronic mail) __________. a. | is software that
helps people work together on projects and share information over a network | b. | functions much
like an answering machine, allowing callers to leave a voice message for the called
party | c. | is the exchange of text messages and computer files transmitted
via a communications network such as a local area network or the Internet | d. | consists of one
or more earth-based receivers that accept and analyze signals sent by satellites in order to
determine the receiver’s position | | |
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9.
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A
videoconference __________. a. | is an area on the Web where users conduct written discussions
about a particular subject | b. | consists of one or more earth-based receivers that accept and
analyze signals sent by satellites in order to determine the receiver’s
position | c. | is a real-time Internet communications service that notifies
users when one or more people are online and then allows the exchange of
messages | d. | involves using video and computer technology to conduct a
meeting between participants at geographically separate locations | | |
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10.
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Advantages of using a network include __________. a. | facilitating
communications | c. | sharing data and
information | b. | sharing hardware and software | d. | all of the above | | | | |
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11.
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A
__________ 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) | c. | metropolitan
area network (MAN) | b. | wide area network (WAN) | d. | central area network (CAN) | | | | |
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12.
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A
__________ is a backbone network that connects networks in a city or town and handles the bulk of
communications activity, or traffic, in that region. a. | local area
network (LAN) | c. | metropolitan
area network (MAN) | b. | wide area network (WAN) | d. | central area network (CAN) | | | | |
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13.
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__________ allows wireless mobile devices to access the Internet and its services such
as the Web and e-mail. a. | TCP/IP | c. | WAP | b. | Ethernet | d. | Token ring | | | | |
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14.
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A
HomePLC (powerline cable) network, sometimes called a powerline LAN, __________. a. | uses radio
waves, instead of cable, to transmit data | b. | is a network that uses the same lines that bring electricity
and power into the home | c. | requires a separate cable to connect to each computer in the
home | d. | is an
inexpensive network that uses existing telephone lines in the home | | |
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15.
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A
disadvantage of dial-up lines is that __________. a. | it costs more than making a regular telephone
call | b. | connections
cannot be established using modems and the telephone network | c. | the quality of
the connection cannot be controlled | d. | all of the above | | |
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16.
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The
most popular T-carrier line is the __________. a. | T1 line | c. | T3 line | b. | T2
line | d. | T4
line | | | | |
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17.
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__________ consists of a single copper wire surrounded by at least three layers: (1)
an insulating material, (2) a woven or braided metal, and (3) a plastic outer
coating. a. | Twisted-pair
cable | c. | Fiber-optic
cable | b. | Coaxial cable or coax | d. | Infrared cable | | | | |
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18.
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Wireless transmission media used in communications include all of the following
except __________. a. | broadcast radio and cellular
radio | c. | communications
satellites | b. | twisted-pair cable and fiber-optic
cable | d. | microwaves and
infrared | | | | |
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19.
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With
broadcast radio, some networks use a __________, which both sends and receives signals from wireless
devices. a. | router | c. | transceiver | b. | coax | d. | firewall | | | | |
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20.
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__________ is a set of technologies used for completely digital cellular
devices. a. | Wireless
Application Protocol (WAP) | b. | Global Positioning System (GPS) | c. | Digital
Subscriber Line (DSL) | d. | Personal Communications Services
(PCS) | | |
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