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Exam 9: Communications and Networks

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Question 41

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COGNITIVE ASSESSMENT What is the definition of a protocol, as it applies to networks?

A) the language used to translate analog signals into digital signals
B) a method for connecting nodes on a network
C) the rules governing acceptable network use by employees or other users
D) a standard that outlines characteristics of how two network devices communicate

E) A) and C)
F) A) and B)

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Question 42

Multiple Choice

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COGNITIVE ASSESSMENT What communications type enables real-time typed conversation among two or more people that takes place on a computer connected to a network?

A) e-mail
B) FTP
C) chat room
D) newsgroup

E) A) and D)
F) A) and B)

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Question 43

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Which of the following is a coffeehouse or restaurant that provides computers with Internet access to its customers?

COGNITIVE ASSESSMENT Which of the following communications technologies does not use broadcast radio signals?

The ____________________ standard specifies that computers and devices on the network share or pass a special signal, called a token, in a unidirectional manner and in a preset order.

Which of the following kinds of modems is a digital modem that sends and receives digital data over the cable television (CATV) network?

Mobile TV provides television programs over the cellular network.

On a token ring network, a packet is a special series of bits that function like a ticket, allowing the device with the packet to transmit data over the network.

On a network such as the one illustrated in the accompanying figure, what kind of computer controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information?

For best performance of a communications channel, which of the following should be true?

COGNITIVE ASSESSMENT In reference to computer communications, what does the term noise mean?

Some services use which of the following terms to refer separately to the capability of sending video clips?

COGNITIVE ASSESSMENT Which company was formed when Bell Atlantic acquired GTE in 2000?

Data transmitted on a ring network like the one shown in the accompanying figure travels from device to device around the entire ring, in both directions.

For radio transmissions, a transmitter is needed to send the broadcast radio signal and a receiver to accept it.

Home networking saves the home user money and provides many conveniences.

A voice mailbox plays which of the following roles in a voice mail system?

Which of the following is true of the installation of a network like the one shown in the accompanying figure?

____________________ is a newer network standard developed by IEEE that specifies how wireless devices communicate over the air in a wide area.

Which of the following is a central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelessly to a wired network?