Computer Networking
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?

30
150
100
None of these
80

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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

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

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