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