Computer Networking
The Internet Control Message Protocol (ICMP)

allows gateways to send error a control messages to other gateways or hosts
reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
All of these
None of these

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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?

Electronic newspaper
Global network
Electronic mail
None of these
Paperless office

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Computer Networking
Synchronous protocols

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

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