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?

Paperless office
Global network
Electronic mail
Electronic newspaper
None of these

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Computer Networking
Carrier is

None of these
One or more conductors that serve as a common connection for a related group of devices
the condition when two or more sections attempt to use the same channel at the same time
a continuous frequency capable of being modulated or impressed with a second signal
a collection of interconnected functional units that provides a data communications service among stations attached to the network

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Computer Networking
Synchronous protocols

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

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Computer Networking
The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

NVRAM should be erased and the router restarted.
RAM should be erased and the router restarted.
Flash should be erased and the router restarted.
The new configuration should be entered and saved.

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