, Chapter 1 oo
Introduction to Data Communications oo oo oo
True-False Questions oo
The following are possible True/False questions for tests. The statement is given and the
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answer is provided in square brackets. The level of difficulty (easy, moderate, difficult)
oo oo oo oo oo oo oo oo oo oo oo oo oo
and the page number(s) relevant to the topic are also furnished.
oo oo oo oo oo oo oo oo oo oo oo
1. According to John Chambers, CEO of Cisco (a leading networking technology
oo oo oo oo oo oo oo oo oo oo
company), the information age is the second Industrial Revolution.
oo oo oo oo oo oo oo oo oo
Answer:True Difficulty: Easy oo Reference: o o p. 4
oo
2. Due to recent advances in high speed communication networks, the information lag,
oo oo oo oo oo oo oo oo oo oo oo
or the time it takes for information to be disseminated around the world, has been
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
significantly shortened.
oo oo
Answer:True Difficulty: Easy Reference: p.4 oo o o
3. One perspective of data communications and networking as stated in the textbook,
oo oo oo oo oo oo oo oo oo oo oo
examines the management of networking technologies, including security, network
oo oo oo oo oo oo oo oo oo
design, and managing the network on a day-to-day basis and long term basis.
oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer:True Difficulty: Moderate Reference: p. 5 oo o o oo
4. The first electronic data communication system was the telephone developed by
oo oo oo oo oo oo oo oo oo oo
Alexander Graham Bell.
oo oo oo
Answer:False Difficulty: Easy Reference: oo o o p. 5
oo
5. The first transcontinental telephone service was established in the 1940s.
oo oo oo oo oo oo oo oo oo
Answer:False Difficulty: Easy Reference: p. 6 oo o o oo
6. An Inter-Exchange Carrier (IXC) provides only local telephone services to homes
oo oo oo oo oo oo oo oo oo oo
and businesses.
oo oo
Answer: False Difficulty: Easy
oo Reference: oo o o p. 6
oo
7. Common carriers include the RBOCs, IXCs, and Cable TV companies.
oo oo oo oo oo oo oo oo oo
Answer:True Difficulty: Moderate Reference: p. 7 oo o o oo
8. The Telecommunications Act of 1996 now permits the RBOCs to provide long
oo oo oo oo oo oo oo oo oo oo oo
distance outside the region in which they provide local telephone services.
oo oo oo oo oo oo oo oo oo oo oo
Answer: True oo Difficulty: Moderate Reference: p. 7 oo o o oo
9. The Internet was started by the U.S. Department of defense in 1969 as a network
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
of four computers called ARPANET.
oo oo oo oo oo
Answer: True oo Difficulty: Moderate Reference: p. 9 oo o o oo
10. Telecommunications is the transmission of voice and video as well as data andoo oo oo oo oo oo oo oo oo oo oo oo
implies transmitting a longer distance than in a data communication network.
oo oo oo oo oo oo oo oo oo oo oo
Answer:False Difficulty: Moderate oo Reference: o o p. 11
oo
,11. A local area network (LAN) connects other LANs and BNs located in different areas to
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
each other and to wide area networks in a span from 3 to 30 miles.
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: False Difficulty: Moderate
oo Reference: p. 13 oo o o oo
12. An intranet is a LAN that uses Internet technologies and is publicly available to
oo oo oo oo oo oo oo oo oo oo oo oo oo
people outside of the organization.
oo oo oo oo oo
Answer: False Difficulty: Moderate
oo Reference: p. 15 oo o o oo
13. A car manufacturer may give access to certain portions of its network to some of its
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
suppliers via Internet. This is an example of an Extranet.
oo oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 15 oo o o oo
14. The OSI model is the most widely used network model to develop and build networks today.
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 16 oo o o oo
15. The network layer is responsible for routing messages from the source computer
oo oo oo oo oo oo oo oo oo oo oo
to the destination computer.
oo oo oo oo
Answer: True Difficulty: Easy
oo Reference: p. 17 oo o o oo
16. In the OSI model, the application layer is the end user‟s access to the network.
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 18 oo o o oo
17. The application layer is the seventh layer of the Internet model and provides the end
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
user‟s access to the network.
oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 18 oo o o oo
18. At the transport layer in the Internet model, TCP is responsible for breaking large
oo oo oo oo oo oo oo oo oo oo oo oo oo
files received from the application layer into smaller packets and opening a connection
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to a server for transferring the packets.
oo oo oo oo oo oo oo
Answer: True Difficulty: Difficult
oo oo Reference: o o p. 17 oo
19. Ethernet is an example of a network layer protocol.
oo oo oo oo oo oo oo oo
Answer: False Difficulty: Easy
oo Reference: oo o o p. 17 oo
20. Data communication standards enable each layer in the sending computer to
oo oo oo oo oo oo oo oo oo oo
communicate with its corresponding layer in the receiving computer.
oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Easy
oo Reference: oo o o p. 22 oo
21. The specification stage of the formal standardization process consists of
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developing nomenclature and identifying the problems to be addressed.
oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo oo Reference: o o p. 23 oo
22. ANSI is a voting participant in the ISO.
oo oo oo oo oo oo oo
Answer: True Difficulty: Easy
oo Reference: p. 23 oo o o oo
23. Passive optical networking, a key trend for the future, means that virtually any
oo oo oo oo oo oo oo oo oo oo oo oo
computer will be able to communicate with any other computer in the world.
oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: False oo Difficulty: Moderate oo Reference: p. 26 oo oo
, 24. The high bandwidth requirements (high communications needs) for video have
oo oo oo oo oo oo oo oo oo
slowed its integration into computer networks.
oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 28 oo oo oo
25. An Application Service Provider (ASP) develops a specific system and companies
oo oo oo oo oo oo oo oo oo oo
purchase or rent the service without installing the system on their own computers.
oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: True oo Difficulty: Moderate oo Reference: p. 29 oo oo
MULTIPLE CHOICE oo
The following are possible multiple-choice questions for tests. The question is posed and
oo oo oo oo oo oo oo oo oo oo oo oo
the answer is provided under the choices. The level of difficulty (easy, moderate,
oo oo oo oo oo oo oo oo oo oo oo oo oo
difficult) and the page number(s) relevant to the topic is also furnished.
oo oo oo oo oo oo oo oo oo oo oo oo
1. Data communications and networking can be considered as a global area of study because:
oo oo oo oo oo oo oo oo oo oo oo oo oo
a. new technologies and applications emerge from a variety of countries
oo o o o o oo o o o o oo oo o o
and spread around the world
oo oo oo oo oo
b. the technologies enable global communication
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c. the political and regulatory issues are exactly the same in every country
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d. a and b oo oo
e. none of the above oo oo oo
Answer: D Difficulty: Easy
oo Reference: p. 4 oo o o oo
2. In 1970, a key decision regarding MCI:
oo oo oo oo oo oo
a. set up the Telecommunications Competition and Deregulation Act
oo oo oo oo oo oo oo
b. permitted MCI to provide limited long distance service in the U.S. oo oo oo oo oo oo oo oo oo oo
c. permitted telephone and/or computer equipment that was not manufactured by
oo oo oo oo oo oo oo oo oo
Bell Telephone to be connected to AT&T‟s network
oo oo oo oo oo oo oo oo
d. divided AT&T into two parts: one part for long distance service, and a second
oo oo oo oo oo oo oo oo oo oo oo oo oo
part, comprised of seven operating companies, for local telephone service
oo oo oo oo oo oo oo oo oo oo
e. set up deregulation for international telecommunications markets in 68 countries
oo oo oo oo oo oo oo oo oo
Answer: B Difficulty: Easy
oo Reference: p. 6 oo oo oo oo
3. In 1984, a federal judge broke up a highly contested telephone service monopoly and:
oo oo oo oo oo oo oo oo oo oo oo oo oo
a. set up the Telecommunications Competition and Deregulation Act oo oo oo oo oo oo oo
b. permitted MCI to provide limited long distance service in the U.S. oo oo oo oo oo oo oo oo oo oo
c. permitted telephone and/or computer equipment that was not manufactured oo oo oo oo oo oo oo oo
by Bell Telephone to be connected to AT&T‟s network
oo oo oo oo oo oo oo oo oo
d. divided AT&T into two parts: one part for long distance service, and a oo oo oo oo oo oo oo oo oo oo oo oo
second part, comprised of seven regional operating companies, for local
oo oo oo oo oo oo oo oo oo oo
telephone service oo oo
e. set up deregulation for international telecommunications markets in 68 countries
oo oo oo oo oo oo oo oo oo
Answer: D oo Difficulty: Easy oo Reference: o o p. 6 oo
Introduction to Data Communications oo oo oo
True-False Questions oo
The following are possible True/False questions for tests. The statement is given and the
oo oo oo oo oo oo oo oo oo oo oo oo oo
answer is provided in square brackets. The level of difficulty (easy, moderate, difficult)
oo oo oo oo oo oo oo oo oo oo oo oo oo
and the page number(s) relevant to the topic are also furnished.
oo oo oo oo oo oo oo oo oo oo oo
1. According to John Chambers, CEO of Cisco (a leading networking technology
oo oo oo oo oo oo oo oo oo oo
company), the information age is the second Industrial Revolution.
oo oo oo oo oo oo oo oo oo
Answer:True Difficulty: Easy oo Reference: o o p. 4
oo
2. Due to recent advances in high speed communication networks, the information lag,
oo oo oo oo oo oo oo oo oo oo oo
or the time it takes for information to be disseminated around the world, has been
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
significantly shortened.
oo oo
Answer:True Difficulty: Easy Reference: p.4 oo o o
3. One perspective of data communications and networking as stated in the textbook,
oo oo oo oo oo oo oo oo oo oo oo
examines the management of networking technologies, including security, network
oo oo oo oo oo oo oo oo oo
design, and managing the network on a day-to-day basis and long term basis.
oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer:True Difficulty: Moderate Reference: p. 5 oo o o oo
4. The first electronic data communication system was the telephone developed by
oo oo oo oo oo oo oo oo oo oo
Alexander Graham Bell.
oo oo oo
Answer:False Difficulty: Easy Reference: oo o o p. 5
oo
5. The first transcontinental telephone service was established in the 1940s.
oo oo oo oo oo oo oo oo oo
Answer:False Difficulty: Easy Reference: p. 6 oo o o oo
6. An Inter-Exchange Carrier (IXC) provides only local telephone services to homes
oo oo oo oo oo oo oo oo oo oo
and businesses.
oo oo
Answer: False Difficulty: Easy
oo Reference: oo o o p. 6
oo
7. Common carriers include the RBOCs, IXCs, and Cable TV companies.
oo oo oo oo oo oo oo oo oo
Answer:True Difficulty: Moderate Reference: p. 7 oo o o oo
8. The Telecommunications Act of 1996 now permits the RBOCs to provide long
oo oo oo oo oo oo oo oo oo oo oo
distance outside the region in which they provide local telephone services.
oo oo oo oo oo oo oo oo oo oo oo
Answer: True oo Difficulty: Moderate Reference: p. 7 oo o o oo
9. The Internet was started by the U.S. Department of defense in 1969 as a network
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
of four computers called ARPANET.
oo oo oo oo oo
Answer: True oo Difficulty: Moderate Reference: p. 9 oo o o oo
10. Telecommunications is the transmission of voice and video as well as data andoo oo oo oo oo oo oo oo oo oo oo oo
implies transmitting a longer distance than in a data communication network.
oo oo oo oo oo oo oo oo oo oo oo
Answer:False Difficulty: Moderate oo Reference: o o p. 11
oo
,11. A local area network (LAN) connects other LANs and BNs located in different areas to
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
each other and to wide area networks in a span from 3 to 30 miles.
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: False Difficulty: Moderate
oo Reference: p. 13 oo o o oo
12. An intranet is a LAN that uses Internet technologies and is publicly available to
oo oo oo oo oo oo oo oo oo oo oo oo oo
people outside of the organization.
oo oo oo oo oo
Answer: False Difficulty: Moderate
oo Reference: p. 15 oo o o oo
13. A car manufacturer may give access to certain portions of its network to some of its
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
suppliers via Internet. This is an example of an Extranet.
oo oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 15 oo o o oo
14. The OSI model is the most widely used network model to develop and build networks today.
oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 16 oo o o oo
15. The network layer is responsible for routing messages from the source computer
oo oo oo oo oo oo oo oo oo oo oo
to the destination computer.
oo oo oo oo
Answer: True Difficulty: Easy
oo Reference: p. 17 oo o o oo
16. In the OSI model, the application layer is the end user‟s access to the network.
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 18 oo o o oo
17. The application layer is the seventh layer of the Internet model and provides the end
oo oo oo oo oo oo oo oo oo oo oo oo oo oo
user‟s access to the network.
oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 18 oo o o oo
18. At the transport layer in the Internet model, TCP is responsible for breaking large
oo oo oo oo oo oo oo oo oo oo oo oo oo
files received from the application layer into smaller packets and opening a connection
oo oo oo oo oo oo oo oo oo oo oo oo oo
to a server for transferring the packets.
oo oo oo oo oo oo oo
Answer: True Difficulty: Difficult
oo oo Reference: o o p. 17 oo
19. Ethernet is an example of a network layer protocol.
oo oo oo oo oo oo oo oo
Answer: False Difficulty: Easy
oo Reference: oo o o p. 17 oo
20. Data communication standards enable each layer in the sending computer to
oo oo oo oo oo oo oo oo oo oo
communicate with its corresponding layer in the receiving computer.
oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Easy
oo Reference: oo o o p. 22 oo
21. The specification stage of the formal standardization process consists of
oo oo oo oo oo oo oo oo oo
developing nomenclature and identifying the problems to be addressed.
oo oo oo oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo oo Reference: o o p. 23 oo
22. ANSI is a voting participant in the ISO.
oo oo oo oo oo oo oo
Answer: True Difficulty: Easy
oo Reference: p. 23 oo o o oo
23. Passive optical networking, a key trend for the future, means that virtually any
oo oo oo oo oo oo oo oo oo oo oo oo
computer will be able to communicate with any other computer in the world.
oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: False oo Difficulty: Moderate oo Reference: p. 26 oo oo
, 24. The high bandwidth requirements (high communications needs) for video have
oo oo oo oo oo oo oo oo oo
slowed its integration into computer networks.
oo oo oo oo oo oo
Answer: True Difficulty: Moderate
oo Reference: p. 28 oo oo oo
25. An Application Service Provider (ASP) develops a specific system and companies
oo oo oo oo oo oo oo oo oo oo
purchase or rent the service without installing the system on their own computers.
oo oo oo oo oo oo oo oo oo oo oo oo oo
Answer: True oo Difficulty: Moderate oo Reference: p. 29 oo oo
MULTIPLE CHOICE oo
The following are possible multiple-choice questions for tests. The question is posed and
oo oo oo oo oo oo oo oo oo oo oo oo
the answer is provided under the choices. The level of difficulty (easy, moderate,
oo oo oo oo oo oo oo oo oo oo oo oo oo
difficult) and the page number(s) relevant to the topic is also furnished.
oo oo oo oo oo oo oo oo oo oo oo oo
1. Data communications and networking can be considered as a global area of study because:
oo oo oo oo oo oo oo oo oo oo oo oo oo
a. new technologies and applications emerge from a variety of countries
oo o o o o oo o o o o oo oo o o
and spread around the world
oo oo oo oo oo
b. the technologies enable global communication
oo oo oo oo
c. the political and regulatory issues are exactly the same in every country
oo oo oo oo oo oo oo oo oo oo oo
d. a and b oo oo
e. none of the above oo oo oo
Answer: D Difficulty: Easy
oo Reference: p. 4 oo o o oo
2. In 1970, a key decision regarding MCI:
oo oo oo oo oo oo
a. set up the Telecommunications Competition and Deregulation Act
oo oo oo oo oo oo oo
b. permitted MCI to provide limited long distance service in the U.S. oo oo oo oo oo oo oo oo oo oo
c. permitted telephone and/or computer equipment that was not manufactured by
oo oo oo oo oo oo oo oo oo
Bell Telephone to be connected to AT&T‟s network
oo oo oo oo oo oo oo oo
d. divided AT&T into two parts: one part for long distance service, and a second
oo oo oo oo oo oo oo oo oo oo oo oo oo
part, comprised of seven operating companies, for local telephone service
oo oo oo oo oo oo oo oo oo oo
e. set up deregulation for international telecommunications markets in 68 countries
oo oo oo oo oo oo oo oo oo
Answer: B Difficulty: Easy
oo Reference: p. 6 oo oo oo oo
3. In 1984, a federal judge broke up a highly contested telephone service monopoly and:
oo oo oo oo oo oo oo oo oo oo oo oo oo
a. set up the Telecommunications Competition and Deregulation Act oo oo oo oo oo oo oo
b. permitted MCI to provide limited long distance service in the U.S. oo oo oo oo oo oo oo oo oo oo
c. permitted telephone and/or computer equipment that was not manufactured oo oo oo oo oo oo oo oo
by Bell Telephone to be connected to AT&T‟s network
oo oo oo oo oo oo oo oo oo
d. divided AT&T into two parts: one part for long distance service, and a oo oo oo oo oo oo oo oo oo oo oo oo
second part, comprised of seven regional operating companies, for local
oo oo oo oo oo oo oo oo oo oo
telephone service oo oo
e. set up deregulation for international telecommunications markets in 68 countries
oo oo oo oo oo oo oo oo oo
Answer: D oo Difficulty: Easy oo Reference: o o p. 6 oo
