, Chapter 1
Introduction to Data Communications
True-False Questions
The following are possible True/False questions for tests. The statement is given and the answer is
provided. The level of difficulty (easy, medium, hard), the reference section relevant to the topic, and
learning objective are also furnished.
1. According to John Chambers, CEO of Cisco (a leading networking technology company), the
information age is the second Industrial Revolution.
Answer: True
Difficulty: Easy
Reference: Introduction
L.O.: Be aware of the three fundamental questions this book answers
2. Due to advances in high speed communication networks, the information lag, or the time it takes for
information to be disseminated around the world, has been significantly shortened.
Answer: True
Difficulty: Easy
Reference: Introduction
L.O.: Be aware of the applications of data communications networks
3. It is not uncommon for companies to end up spending more money on network management and
security tasks than they do on the actual computer equipment itself.
Answer: True
Difficulty: Medium
Reference: Introduction
L.O.: Be aware of the three fundamental questions this book answers
4. Telecommunications is the transmission of voice and video as well as data and usually implies
transmitting a longer distance than in a data communication network.
Answer: True
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
5. A local area network (LAN) connects other LANs and backbone networks (BNs) located in different
areas to each other and to wide area networks in a span from 3 to 30 miles.
Answer: False
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
,6. An intranet is a LAN that uses Internet technologies and is publicly available to people outside of the
organization.
Answer: False
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
7. A car manufacturer may give access to certain portions of its network to some of its suppliers via the
Internet. This is an example of an extranet.
Answer: True
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
8. The OSI model is currently the most widely implemented network model used to develop and build
networks of any size, including the Internet itself.
Answer: False
Difficulty: Medium
Reference: Network Models
L.O.: Understand the role of network layers
9. The network layer performs the same functions in both the OSI and Internet models and is responsible
for routing messages from the source computer to the destination computer.
Answer: True
Difficulty: Easy
Reference: Network Models
L.O.: Understand the role of network layers
10. In the OSI model, the application layer provides a set of utilities for applications and is the end user’s
access to the network.
Answer: True
Difficulty: Medium
Reference: Network Models
L.O.: Understand the role of network layers
11. The application layer is the seventh layer of the Internet model and specifies the type of connection
and the electrical signals that pass through it.
Answer: False
Difficulty: Easy
Reference: Network Models
L.O.: Understand the role of network layers
12. At the transport layer in the Internet model, TCP is responsible for breaking large files received from
the application layer into smaller messages and opening a connection to a server for transferringthem.
, Answer: True
Difficulty: Hard
Reference: Network Models
L.O.: Understand the role of network layers
13. Ethernet is an example of a network layer protocol.
Answer: False
Difficulty: Easy
Reference: Network Standards
L.O.: Be familiar with the role of network standards
14. Data communication standards enable each layer in the sending computer to communicate with its
corresponding layer in the receiving computer.
Answer: True
Difficulty: Easy
Reference: Network Standards
L.O.: Be familiar with the role of network standards
15. The specification stage of the de jure standardization process consists of developing nomenclature and
identifying the problems to be addressed.
Answer: True
Difficulty: Medium
Reference: Network Standards
L.O.: Be familiar with the role of network standards
16. ANSI is a voting participant in the ISO.
Answer: True
Difficulty: Easy
Reference: Network Standards
L.O.: Be familiar with the role of network standards
MULTIPLE CHOICE
The following are possible multiple-choice questions for tests. The question is posed and the answer is
provided under the choices. The level of difficulty (easy, medium, hard), the reference section relevant to
the topic, and learning objective are also furnished.
Introduction to Data Communications
True-False Questions
The following are possible True/False questions for tests. The statement is given and the answer is
provided. The level of difficulty (easy, medium, hard), the reference section relevant to the topic, and
learning objective are also furnished.
1. According to John Chambers, CEO of Cisco (a leading networking technology company), the
information age is the second Industrial Revolution.
Answer: True
Difficulty: Easy
Reference: Introduction
L.O.: Be aware of the three fundamental questions this book answers
2. Due to advances in high speed communication networks, the information lag, or the time it takes for
information to be disseminated around the world, has been significantly shortened.
Answer: True
Difficulty: Easy
Reference: Introduction
L.O.: Be aware of the applications of data communications networks
3. It is not uncommon for companies to end up spending more money on network management and
security tasks than they do on the actual computer equipment itself.
Answer: True
Difficulty: Medium
Reference: Introduction
L.O.: Be aware of the three fundamental questions this book answers
4. Telecommunications is the transmission of voice and video as well as data and usually implies
transmitting a longer distance than in a data communication network.
Answer: True
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
5. A local area network (LAN) connects other LANs and backbone networks (BNs) located in different
areas to each other and to wide area networks in a span from 3 to 30 miles.
Answer: False
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
,6. An intranet is a LAN that uses Internet technologies and is publicly available to people outside of the
organization.
Answer: False
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
7. A car manufacturer may give access to certain portions of its network to some of its suppliers via the
Internet. This is an example of an extranet.
Answer: True
Difficulty: Medium
Reference: Data Communications Networks
L.O.: Be familiar with the major components of and types of networks
8. The OSI model is currently the most widely implemented network model used to develop and build
networks of any size, including the Internet itself.
Answer: False
Difficulty: Medium
Reference: Network Models
L.O.: Understand the role of network layers
9. The network layer performs the same functions in both the OSI and Internet models and is responsible
for routing messages from the source computer to the destination computer.
Answer: True
Difficulty: Easy
Reference: Network Models
L.O.: Understand the role of network layers
10. In the OSI model, the application layer provides a set of utilities for applications and is the end user’s
access to the network.
Answer: True
Difficulty: Medium
Reference: Network Models
L.O.: Understand the role of network layers
11. The application layer is the seventh layer of the Internet model and specifies the type of connection
and the electrical signals that pass through it.
Answer: False
Difficulty: Easy
Reference: Network Models
L.O.: Understand the role of network layers
12. At the transport layer in the Internet model, TCP is responsible for breaking large files received from
the application layer into smaller messages and opening a connection to a server for transferringthem.
, Answer: True
Difficulty: Hard
Reference: Network Models
L.O.: Understand the role of network layers
13. Ethernet is an example of a network layer protocol.
Answer: False
Difficulty: Easy
Reference: Network Standards
L.O.: Be familiar with the role of network standards
14. Data communication standards enable each layer in the sending computer to communicate with its
corresponding layer in the receiving computer.
Answer: True
Difficulty: Easy
Reference: Network Standards
L.O.: Be familiar with the role of network standards
15. The specification stage of the de jure standardization process consists of developing nomenclature and
identifying the problems to be addressed.
Answer: True
Difficulty: Medium
Reference: Network Standards
L.O.: Be familiar with the role of network standards
16. ANSI is a voting participant in the ISO.
Answer: True
Difficulty: Easy
Reference: Network Standards
L.O.: Be familiar with the role of network standards
MULTIPLE CHOICE
The following are possible multiple-choice questions for tests. The question is posed and the answer is
provided under the choices. The level of difficulty (easy, medium, hard), the reference section relevant to
the topic, and learning objective are also furnished.
