Exam 2

Question 1

Which is an advantage of networking?

Answer 1

Centralized data management

Question 2

A _____ is necessary to make the connection between a local area network and the Internet?

Answer 2

router

Question 3

Encryption on a wireless network is activated by enabling _______.

Answer 3

WPA

Question 4

A(n) _______ is a network device with software that manages network resources like files, e-mails, printers, and databases.

Answer 4

server

Question 5

Which of the following is NOT a network communications device?

Answer 5

• Router

- LAN

Question 6

Which of the following is the largest wide area (WAN)?

Answer 6

Internet

Question 7

When a computer is connected to a network, it is called a:

Answer 7

node.

Question 8

Which of the following network devices has the capability to determine the best path to transmit data and determine alternative pathways?

Answer 8

Router

Question 9

Which of the following is the approximate effective inside range for a wireless LAN signals?

Answer 9

125 to 300 feet

Question 10

A local area network (LAN) in which all the computers are equals is called a (n) ____ network.

Answer 10

peer-to-peer

Question 11

A VPN operates as a private network over which larger type of network?

Answer 11

Internet

Question 12

The term network topology refers to the:

Answer 12

physical layout of a local area network.

Question 13

A ______ is a simple broadcast device that does not manage traffic and usually results in frequent collisions.

Answer 13

hub

Question 14

Gigabit Ethernet makes a next generation application, such as _____, possible.

Answer 14

all of the above

Question 15

Which of the following types of networks requires an access point?

Answer 15

WiFi

Question 16

Which of the following features enable the strongest WiFi encryption protection?

Answer 16

WPA

Question 17

_____, where networked computers work on small pieces of large complex tasks, is revolutionizing research in a number of areas…

Answer 17

• Distributed computing

- Group work

Question 18

A point fo presence (POP) is a:

Answer 18

wired or wireless WAN network that enables users to access the WAN.

Question 19

To carry computer data over the long haul, WANs need to have a (n) _____ in multiple towns and cities.

Answer 19

POP

Question 20

Which of the following is the name for the high-capacity transmission lines that carry WAN traffic?

Answer 20

Backbones

……

Question 21

Wired technologies are:

Answer 21

connected by a physical medium.

Question 22

Which of the following is the path through which messages are sent from one location to another?

Answer 22

communications channels

Question 23

The bandwidth of a digital signal is measured in:

Answer 23

bits per second (bps)

Question 24

The word modem is a combination of which of the following words:

Answer 24

modulate and demodulate.

Question 25

bandwidth refers to:

Answer 25

the amount of data that can be transmitted through a communication channel.

Question 26

Which of the following terms is used to describe the transformation of analog signals into digital signals?

Answer 26

demodulation

Question 27

What is the transfer rate of fiber-optic cable?

Answer 27

10Gbps

Question 28

Which of the following wireless communications medium transmits through the air?

Answer 28

Infrared

Question 29

Bluetooth is a(n) _____ radio transmission technology.

Answer 29

short-range

Question 30

The maximum distance for microwaves is about ___ mile(s).

Answer 30

30

Question 31

____ transmit data by sending and receiving microwave signals to and from Earth-based stations.

Answer 31

satellites

Question 32

____ sends more than one call over a single line.

Answer 32

multiplexing

Question 33

Which of the following is NOT true about digital telephony?

Answer 33

Most telephones in the local loop use digital telephony

Question 34

DSL is ____ than dial-up but is often ____ than other broadband access options.

Answer 34

more expensive; less expensive

Question 35

Which of the following is NOT true about piggybacking?

Answer 35

at present it is not considered a crime to

Question 36

The current digital generation of phones is referred to as:

Answer 36

4g

Question 37

To work over wireless networks, Web-enabled devices require:

Answer 37

WAP

Question 38

WAP-enabled devices require a _____, a special Web browser that has all the features of computer-based browsers but is simplified to meet handheld device limitations.

Answer 38

microbrowser

Question 39

The basic advantage of Internet telephony is that:

Answer 39

you don't pay long distance charges.

Question 40

Which of the following systems is used by the U.S. National Security Agency (NSA) to monitor international communications and search for phrases containing words such as bomb?

Answer 40

Echelon