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"); document.writeln("Name: " + studentName + "
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RESPONSE: 

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Name: 
 

Chapter Nine Homework


True/False
Indicate whether the sentence or statement is true or false.
 

1. 
A print server is a dedicated server that manages network traffic.
 

2. 
In the token ring LAN technology, multiple tokens exist per the network.
 

3. 
To prevent unauthorized access to data and information, companies protect their intranet or extranet with a firewall.
 

4. 
A phoneline network interferes with voice and telephone transmissions on a home telephone line.
 

5. 
Microwaves can transmit data at rates up to 4,500 times faster than a dial-up modem.
 

6. 
Transmission from an earth-based station to a satellite is a downlink.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

7. 
A(n) __________ consists of a continuous electrical wave.
a.
radio signal
c.
digital signal
b.
analog signal
d.
turn signal
 

8. 
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
 

9. 
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
 

10. 
Advantages of using a network include __________.
a.
facilitating communications
c.
sharing data and information
b.
sharing hardware and software
d.
all of the above
 

11. 
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)
 

12. 
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)
 

13. 
__________ 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
 

14. 
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
 

15. 
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
 

16. 
The most popular T-carrier line is the __________.
a.
T1 line
c.
T3 line
b.
T2 line
d.
T4 line
 

17. 
__________ 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
 

18. 
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
 

19. 
With broadcast radio, some networks use a __________, which both sends and receives signals from wireless devices.
a.
router
c.
transceiver
b.
coax
d.
firewall
 

20. 
__________ 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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