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