Computer Networking
The data communication support should include, but is not restricted to

file transfer and transaction processing
file and database access
terminal support, electronic mail and voice grams.
All of these

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Computer Networking
Which statement describes a spanning-tree network that has converged?

All switch and bridge ports are either blocking or looping.
All switch and bridge ports are in the forwarding state.
All switch and bridge ports are in either the forwarding or blocking state.
All switch and bridge ports are assigned as either root or designated ports.

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Computer Networking
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

None of these
Electronic newspaper
Electronic mail
Paperless office
Global network

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Computer Networking
Synchronous protocols

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

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