Computer Networking
The main difference between TCP and UDP is

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

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Computer Networking
The network layer, in reference to the OSI model, provide

the virtual circuit interface to packet-switched service
data link procedures that provide for the exchange of data via frames that can be sent and received
None of these
All of these
the interface between the X.25 network and packet mode device

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