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
None of these
Paperless office
Electronic mail

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Computer Networking
The application layer of a network

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

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