Data and Computer Communications, Eighth Edition       Test Bank          Chapter 1 
Chapter 1 - Data Communications, Data Networks, and the Internet

TRUE/FALSE QUESTIONS 
1) 

Data communications deals with the transmission of signals in a reliable and efficient manner. 

1) 

_________ 
Answer  

True 

False 
 
2) 

There are several fundamental differences between data processing and data communications. 

2) 

_________ 
Answer  

True 

False 
 
3) 

There are no fundamental differences among data, voice, and video communications. 

3) 

_________ 
Answer  

True 

False 
 
4) 

Effective and efficient data communication and networking facilities are vital to any enterprise. 

4) 

_________ 
Answer  

True 

False 
 
5) 

Growth in services and growth in traffic capacity go hand in hand. 

5) 

_________ 
Answer  

True 

False 
 
6) 

The increasing use of optical fiber,while greatly increasing capacity, has caused an increase in transmission prices as well. 

6) 

_________ 
Answer  

True 

False 
 
7) 

Voice oriented telecommunications networks and data networks are more "intelligent" than ever. 

7) 

_________ 
Answer  

True 

False 
 
8) 

Changes in corporate data traffic patterns are driving the creation of high-speed WANs. 

8) 

_________ 
Answer  

True 

False 
 
9) 

It is not necessary for a device to interface with the transmission system in order to communicate. 

9) 

_________ 
Answer  

True 

False 
 
10) 

A modem is required to establish communication between a workstation and a server over a public telephone network. 

10) 

________ 
Answer  

True 

False 
 
11) 

Compression refers to the ability of a number of devices to share a transmission facility. 

11) 

________ 
Answer  

True 

False 
 
12) 

The basic building block of any communications facility is the transmission line. 

12) 

________ 
Answer  

True 

False 
 
13) 

Developing switching systems with the capacity and rapid response to support the demand requirements with the increased use of fiber optic transmission is no longer a challenge. 

13) 

________ 
Answer  

True 

False 
 
14) 

Frame relay networks are commonly used for terminal-to-computer and computer-to-computer communications. 

14) 

________ 
Answer  

True 

False 
 
15) 

The LAN is owned by the same organization that owns the attached devices. 

15) 

________ 
Answer  

True 

False 
 
MULTIPLE CHOICE QUESTIONS 
1) 

Enterprises have formed __________ to reach customers, suppliers, and partners while isolating their proprietary information from unwanted access. 

1) 

_________ 
A) 

internets and extranets 
B) 

intranets and extranets 
C) 

LANS and WANS 
D) 

WANS and extranets 
Answer  

B 
 
2) 

DWDM enables capacities of __________ per second. 

2) 

_________ 
A) 

megabits 
B) 

gigabits 
C) 

terabits 
D) 

picobits 
Answer  

C 
 
3) 

The growth of __________ enhances the ability of employees to take their business context with them as they move about, resulting in the ability to use enterprise information resources and services from virtually anywhere. 

3) 

_________ 
A) 

high-speed wireless access 
B) 

extranets 
C) 

WANS 
D) 

remote data access 
Answer  

A 
 
4) 

An __________ uses Internet and Web technology in an isolated facility internal to an enterprise. 

4) 

_________ 
A) 

extranet 
B) 

intranet 
C) 

application network 
D) 

Internet portal 
Answer  

B 
 
5) 

A network in which small chunks of data are passed through the network from node to node, and at each node the entire data chunk is received, stored briefly, and then transmitted to the next node, is a __________ network. 

5) 

_________ 
A) 

circuit switching 
B) 

ATM 
C) 

packet switching 
D) 

frame relay 
Answer  

C 
 
6) 

A dominant architecture in the business environment and the more recent Web-focused intranet trend is __________ computing. 

6) 

_________ 
A) 

client/server 
B) 

token ring 
C) 

GUI 
D) 

Ethernet 
Answer  

A 
 
7) 

The rapid conversion of consumer electronics to digital technology is  having an impact on both the Internet and corporate intranets.  Two examples of this trend are _________ . 

7) 

_________ 
A) 

power workgroups and server farms 
B) 

DVDs and CD-ROMs 
C) 

server farms and DVDs 
D) 

digital versatile disks and digital still cameras 
Answer  

D 
 
8) 

The key elements of a simple communications model are __________ . 

8) 

_________ 
A) 

source, signal, destination 
B) 

source, signal, receiver	 
C) 

source, transmission, destination 
D) 

signal, transmission, receiver 
Answer  

C 
 
9) 

Once an interface is established ___________ is required for communication. 

9) 

_________ 
A) 

transmission 
B) 

signal generation 
C) 

synchronization 
D) 

digital conversion 
Answer  

B 
 
10) 

In order for data processing devices to communicate certain conventions must be decided on.  These requirements can collectively be termed __________ . 

10) 

________ 
A) 

exchange management 
B) 

synchronization 
C) 

transmission systems 
D) 

flow control 
Answer  

A 
 
11) 

In situations in which an information exchange is interrupted due to a fault somewhere in the system, _________ techniques are needed to either resume activity at the point of interruption or to  restore systems to their state prior to the beginning of the exchange. 

11) 

________ 
A) 

routing control 
B) 

error correction 
C) 

flow control 
D) 

recovery 
Answer  

D 
 
12) 

In a __________ network, a dedicated communications path is established between two stations through the nodes of the network.  The telephone network is the most common example. 

12) 

________ 
A) 

packet switching 
B) 

frame relay 
C) 

circuit switching 
D) 

ATM 
Answer  

C 
 
13) 

A __________ is a physical facility that provides the infrastructure to move data between connected networks. 

13) 

________ 
A) 

NAP 
B) 

ATM 
C) 

FDDI 
D) 

NSP 
Answer  

A 
 
14) 

Individual hosts and LANs are connected to an Internet Service Provider through a ________. 

14) 

________ 
A) 

CPE 
B) 

POP 
C) 

NSP 
D) 

NAP 
Answer  

B 
 
15) 

The place where telephone companies terminate customer lines and locate switching equipment to interconnect those lines with other networks is the _______ . 

15) 

________ 
A) 

NAP 
B) 

POP 
C) 

CO 
D) 

ISP 
Answer  

C 
 
FILL IN THE BLANK QUESTIONS 
1) 

Three different forces have consistently driven the architecture and evolution of data communications and networking facilities  traffic growth, development of new services, and ___________ . 

1)  

_________________ 
Answer  

advances in technology 
 
2) 

Today's networks can offer differing levels of __________ , which include specifications for maximum delay and minimum throughput. 

2)  

_________________ 
Answer  

quality of service (QoS) 
 
3) 

Recent offerings of __________ multiplexing enable capacities of many terabits per second for long-distance telecommunication and data network links. 

3)  

_________________ 
Answer  

dense wavelength division 
 
4) 

A variety of customizable services in the areas of network management and _________ are provided by today's networks. 

4)  

_________________ 
Answer  

security 
 
5) 

An __________ extends a company's intranet out onto the Internet to allow selected customers, suppliers, and mobile workers to access the company's private data and applications. 

5)  

_________________ 
Answer  

extranet 
 
6) 

The need to make efficient use of transmission facilities that are typically shared among a number of communicating devices is referred to as ___________ . 

6)  

_________________ 
Answer  

transmission system utilization 
 
7) 

There is a potential for error in all communication systems, therefore, ___________  and correction are required in circumstances where errors cannot be tolerated. 

7)  

_________________ 
Answer  

error detection 
 
8) 

__________ is required to assure that the source does not overwhelm the destination by sending data faster than they can be processed and absorbed. 

8)  

_________________ 
Answer  

Flow control 
 
9) 

__________ is the process of squeezing the data down so that a lower capacity, cheaper transmission facility can be used to meet a given demand. 

9)  

_________________ 
Answer  

Compression 
 
10) 

Networks that generally cover a large geographical area, require the crossing of public right-of-ways, consist of a number of interconnected switching nodes, and rely on circuits provided by a common carrier are __________ . 

10)  

________________ 
Answer  

Wide Area Networks (WANs) 
 
11) 

Using fixed length packets and sometimes referred to as cell relay, __________ is a culmination of developments in circuit switching and packet switching.  It is so efficient that it can offer a constant data rate channel even though it is using a packet switching technique. 

11)  

________________ 
Answer  

Asynchronous transfer mode (ATM) 
 
12) 

__________ networks provide advantages in the areas of mobility and ease of installation and configuration.  

12)  

________________ 
Answer  

Wireless 
 
13) 

The Internet evolved from the __________ which was developed in 1969 by the Advanced Research Projects Agency of the U.S. Department of Defense. 

13)  

________________ 
Answer  

ARPANET 
 
14) 

Communicating across arbitrary, multiple, packet-switched networks is __________ . 

14)  

________________ 
Answer  

internetworking 
 
15) 

Each IP packet includes an unique numeric address of the destination host.  This address is referred to an an __________ . 

15)  

________________ 
Answer  

IP address 

1) 

TRUE 
2) 

FALSE 
3) 

TRUE 
4) 

TRUE 
5) 

TRUE 
6) 

FALSE 
7) 

TRUE 
8) 

TRUE 
9) 

FALSE 
10) 

TRUE 
11) 

FALSE 
12) 

TRUE 
13) 

FALSE 
14) 

FALSE 
15) 

TRUE 
1) 

B 
2) 

C 
3) 

A 
4) 

B 
5) 

C 
6) 

A 
7) 

D 
8) 

C 
9) 

B 
10) 

A 
11) 

D 
12) 

C 
13) 

A 
14) 

B 
15) 

C 
1) 

advances in technology 
2) 

quality of service (QoS) 
3) 

dense wavelength division 
4) 

security 
5) 

extranet 
6) 

transmission system utilization 
7) 

error detection 
8) 

Flow control 
9) 

Compression 
10) 

Wide Area Networks (WANs) 
11) 

Asynchronous transfer mode (ATM) 
12) 

Wireless 
13) 

ARPANET 
14) 

internetworking 
15) 

IP address