Computer Networking
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

P I (K + 1)
None of these
K I (K - P)
1/ (1 - F)
KIK (1 + F)

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Computer Networking
The main difference between TCP and UDP is

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

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Computer Networking
A T-switch is used to

rearrange the connections between computing equipment
control how messages are passed between computers
echo every character that is received
transmit characters one at a time
None of these

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