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
Videotex system
Teletex system
None of these
Microwave system

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Computer Networking
The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?

A logical address that identifies the workstation
The logical domain address for the workstation
An alias for the computer name
A physical address that is randomly assigned each time the computer is started
A physical address that is assigned by the manufacturer

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