Chapter 1
Introducti on to Data Communicati ons
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
Introducti on to Data Communicati ons
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
