Computer Networking
The method of communication in which transmission takes place in both directions, but only one direction at a time is called

Half Duplex
Four wire circuit
Simplex
Full Duplex

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Computer Networking
The main difference between TCP and UDP is

None of these
UDP is connection oriented where as TCP is datagram service
TCP is an Internet protocol where as UDP is an ATM protocol
All of these
UDP is a datagram where as TCP is a connection oriented service

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Computer Networking
Bandlimited signal is

a signal all of whose energy is contained within a finite frequency range
transmission of signals without modulation
None of these
All of these
simultaneous transmission of data to a number of stations

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