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
Paperless office
Global network
None of these
Electronic mail

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Computer Networking
The application layer of a network

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

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Computer Networking
The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are

None of these
A and B both
adequate cost control mechanisms for administration of the private networks
to assign address to private network DTEs
universal accessibility for private network Data Terminal Equipment (DTE)

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