Computer Networking
The main difference between TCP and UDP is

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

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Computer Networking
ARP (Address Resolution Protocol) is

a TCP/IP high level protocol for transferring files from one machine to another
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
None of these
a protocol used to monitor computers
a protocol that handles error and control messages

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