Chapter 3: Conducted and Wireless Media
TRUE/FALSE
1. Category 1 twisted pair wire is not recommended for transmitting megabits of computer data. ANS: T PTS: 1 REF: 63
2. Category 1 wire is susceptible to experiencing noise and signal attenuation. ANS: T PTS: 1 REF: 63
3. Category 1 twisted pa...
,Chapter 1: Introduction to Computer Networks and Data Communications
TRUE/FALSE
1. Data is information that has been translated into a form that is more conducive to storage,
transmission, and calculation.
ANS: T PTS: 1 REF: 4
2. Some people call computer terminals thick-client workstations.
ANS: F PTS: 1 REF: 11
3. A type of microcomputer-to-local area network connection that is growing in popularity is the wireless
connection.
ANS: T PTS: 1 REF: 8
4. To communicate with the Internet using a dial-up modem, a user’s computer must connect to another
computer that is already communicating with the Internet.
ANS: T PTS: 1 REF: 7
5. It is not possible to connect two local area networks so that they can share peripherals as well as
software.
ANS: F PTS: 1 REF: 7
6. Metropolitan area networks can transfer data at fast, LAN speeds but over smaller geographic regions
than typically associated with a local area network.
ANS: F PTS: 1 REF: 3
7. The Internet is not a single network but a collection of thousands of networks.
ANS: T PTS: 1 REF: 3
8. One of the most explosive areas of growth in recent years has been cell phone networks.
ANS: T PTS: 1 REF: 9
9. By the 1970s, telephone systems carried more computer data than voice.
ANS: F PTS: 1 REF: 13
10. Network architectures are cohesive layers of protocols defining a set of communication services.
, ANS: T PTS: 1 REF: 13
11. The OSI model tells us what kind of wire or what kind of connector to use to connect the pieces of a
network.
ANS: F PTS: 1 REF: 17
12. The application layer of the OSI model is responsible for token management.
ANS: F PTS: 1 REF: 17
13. The session layer of the OSI model is responsible for establishing synchronization points.
ANS: T PTS: 1 REF: 18
14. The network layer of the OSI model is an end-to-end layer.
ANS: F PTS: 1 REF: 18
15. The data link layer of the OSI model can incorporate some form of error detection software.
ANS: T PTS: 1 REF: 18
16. The TCP/IP protocol suite does not have rigidly defined layers as the OSI model does.
ANS: T PTS: 1 REF: 14
17. Telnet is used to allow a remote user to log in to another computer system.
ANS: T PTS: 1 REF: 16
18. SNMP is used to allow users to send and receive electronic mail.
ANS: F PTS: 1 REF: 16
19. The lowest layer of the TCP/IP protocol suite is the network access or physical layer.
ANS: T PTS: 1 REF: 17
20. In a network architecture, as the packet moves up through the layers, the data packet shrinks in size.
ANS: T PTS: 1 REF: 21
MULTIPLE CHOICE
, 1. A ____ is an interconnection of computers and computing equipment using either wires or radio waves
over small or large geographic areas.
a. personal area network (PAN) c. wireless network
b. computer network d. local area network (LAN)
ANS: B PTS: 1 REF: 3
2. ____ is the transmission of multiple signals on one medium.
a. Multiplexing c. Modem
b. Codec d. Package
ANS: A PTS: 1 REF: 4
3. ____ is the design, installation, and support of a network and its hardware and software.
a. Convergence c. Data network
b. Voice network d. Network management
ANS: D PTS: 1 REF: 4
4. ____ are the computers that store network software and shared or private user files.
a. Switches c. Servers
b. Routers d. Hubs
ANS: C PTS: 1 REF: 4
5. ____ are more advanced devices that are replacing hubs and are capable of filtering out unnecessary
traffic.
a. Switches c. Servers
b. Routers d. Workstations
ANS: A PTS: 1 REF: 4
6. A ____ is a device that is essentially a keyboard and screen with no long-term storage capabilities and
little, if any, processing power.
a. protocol c. thick-client
b. mainframe d. computer terminal
ANS: D PTS: 1 REF: 10
7. In a(n) ____ system, a user at a microcomputer, or client machine, issues a request for some form of
data or service.
a. wireless c. bridge
b. client/server d. Internet
ANS: B PTS: 1 REF: 6
8. A modem and a dial-up telephone service provides data transfer rates of approximately ____.
a. 56,000 bits per second (56 kbps) c. 128,000 bits per second (128 kbps)
b. 112,000 bits per second (112 kbps) d. 256,000 bits per second (256 kbps)
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