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
Electronic newspaper
None of these
Electronic mail
Global network

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Computer Networking
The application layer of a network

All of these
None of these
defines the user's port into the network
establishes, maintains, and terminates virtual circuits
consists of software being run on the computer connected to the network

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