Computer Networking
Demodulation is a process of

converting digital to analog signals
multiplexing various signals into one high speed line signals
converting analog to digital signals
performing data description.

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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

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

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