Information Technology Reference
In-Depth Information
and small business networks, electronic document distribu-
tion, call centers, telecommuting, videoconferencing, elec-
tronic data interchange, public network services, electronic
funds transfer, distance learning, shared workspaces, unified
communications, global positioning system applications, and
specialized systems and services.
CHAPTER 6: SELF-ASSESSMENT TEST
A telecommunications system and network have many
fundamental components.
1.
a.
BPL
b.
DSL
c.
Wi-Fi
Videoconferencing is an example of asynchronous com-
munications. True or False?
d.
Ethernet
8.
A device that encodes data from two or more devices onto
a single telecommunications channel is called a(n)
_____________.
2.
Gbps stands for billions of bytes per second. True or False?
3.
A simplex channel can transmit data in only one direction
and is seldom used for business communications. True or
False?
9.
A(n) ________ is a network that can connect technology
devices within a range of 33 feet or so.
4.
Two broad categories of transmission media are
_______________.
a.
10. ______ _________is a way to route communications
between network nodes by allowing for continuous
connections and reconfiguration around blocked paths
by “hopping” from node to node until a connection is
established.
11. Telecommuting enables organizations to save money
because less office space, parking space, and office equip-
ment is required. True or False?
guided and wireless
b.
shielded and unshielded
c.
twisted and untwisted
d.
infrared and microwave
Telecommunications, networks, and their associated appli-
cations are essential to organizational success.
12. ______ is a system of transferring money from one bank
account directly to another without any paper money
changing hands.
5.
Verizon has been replacing its traditional twisted-wire pair
network with an all ________ _______ network in hopes
of winning new customers from the cable companies.
6.
Many wireless communications options are available. True
or False?
CHAPTER 6: SELF-ASSESSMENT TEST ANSWERS
(1) False (2) False (3) True (4) a (5) fiber-optic (6) True (7) b
(8) multiplexer (9) personal area network, or PAN (10) mesh
networking (11) True (12) Electronic funds transfer
7.
Which of the following is a telecommunications service
that delivers high-speed Internet access to homes and small
businesses over existing phone lines?
REVIEW QUESTIONS
What is the difference between synchronous and asyn-
chronous communications?
8. What is the difference between near field communication
and ultra wideband?
9. What is the difference between Wi-Fi and WiMAX
communications?
10. What role do the bridge, router, gateway, and switch play
in a network?
11. Describe a local area network and its various components.
12. What is a metropolitan area network?
13. What is EDI? Why are companies using it?
14. Identify two approaches to securing the transmission of
confidential data.
15. What is meant by the term unified communications ?
1.
Describe the elements and steps involved in the telecom-
munications process.
2.
3.
What is a telecommunications protocol?
4.
What are the names of the three primary frequency ranges
employed in wireless communications?
5.
Define the term computer network .
6.
What advantages and disadvantages are associated with the
use of client/server computing?
7.
What is the Bluetooth telecommunications specification?
What capabilities does it provide?
 
 
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