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Exam 6: Data Communication: Delivering Information Anywhere and Anytime

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Question 1

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A(n) _____ is a device that connects a user to the Internet.

A) router
B) modem
C) cookie
D) applet

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

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Question 2

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A(n) _____ topology works well for companies that are geographically dispersed.

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Question 3

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Data communication technologies make Web and video conferencing easier,which can reduce the costs of business travel.

A hierarchical topology is also called a _____ topology.

In the context of the technologies developed to improve the efficiency and quality of digital communications,_____ divides each channel into six time slots.

In a point-to-point system,several devices share the same communication medium simultaneously.

Traditional mainframe networks use a _____ topology.

When phone lines are used for Internet connections,data transmission is possible without the use of analog modems.

_____ are conducted communication media,which can be used for both data and voice transmissions.

Which of the following is the first action to take place in the most basic client / server configuration?

Describe a router.

Discuss the various forms of sender and receiver devices.

Horizontal scaling of client / server architecture means _____.

In a centralized processing system,processing power is distributed among several locations.

_____ is a technique to improve the security of wireless networks,which combines the strongest features of Wired Equivalent Privacy (WEP) and Extensible Authentication Protocol (EAP) techniques.

How do cable modems connect users to the Internet?

A _____ is a network operating on a radio frequency (RF) ,consisting of radio cells,each served by a fixed transmitter.

List the common applications of convergence.

The _____ layer of the Open Systems Interconnection (OSI) model generates a receiver's address; and ensures the integrity of messages by making sure packets are delivered without error,in sequence,and with no loss or duplication.

Fiber-optic cables have the lowest bandwidth of any communication medium.