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Exam 4: Networks

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Question 21

Multiple Choice

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Portals are an example of which network application?

A) Discovery
B) Collaboration
C) Communications
D) Web services
E) None of these

F) B) and C)
G) All of the above

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Question 22

True/False

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Ethernet is a common LAN protocol.

A) True
B) False

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Question 23

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E-learning is conducted only in virtual classrooms, where all coursework is completed online.

Digital signals are continuous waves that transmit information by altering the characteristics of the waves.

Digital signals are discrete pulses that are either on or off.

Voice and data communications are becoming faster but slightly more expensive.

Which of the following is NOT a goal of Qwiki?

A _____ sends messages through several connected LANs or to a wide-area network.

Currently, ATM networks operate only on fiber-optic cable.

_____________ usually spans a city.

The Internet is a wide area network.

With _____, phone calls are treated as just another kind of data.

The quality of automatic translation of Web pages is usually just as good as human translation.

Skype is an example of _______.

Cable media use wires or cables to transmit data and information.

Gal runs a music store.He has a desktop computer in the back room that acts as a server.He has a point-of-sale terminal that connects to the desktop.He also has a notebook (using in-store wireless access to the Internet) that can be carried around the store to look up current items in stock, or to search for items from one of his suppliers for special orders.Which type of media does he likely use to connect the point-of-sale terminal to the desktop?

What is NOT something browser companies focus on to gain competitive advantage.

Which of the following is not a component of a local area network?

All of the following statements concerning wide-area networks are true except:

Data are sent through a fiber-optic cable by a(n) _______.