Computer Networking
Many data communication networks have been established which provide a wealth of on-demand information services to people at home. What is the name of the system which provides an interactive, graphics-rich service that permits user to select what they want?

Fax system
None of these
Microwave system
Teletex system
Videotex system

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Computer Networking
What does a VLAN do?

Provides multiple collision domains on one switch port.
Acts as the fastest port to all servers.
Provides multiple broadcast domains within a single collision domain.
Breaks up broadcast domains in a layer 2 switch internetwork.

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Computer Networking
Synchronous protocols

transmit characters one at a time
are generally used by personal computers
None of these
are more reliable
allow faster transmission than asynchronous protocols do

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