A transport-layer packet is known as a

datagram.

frame.

message.

segment.

Which of the following is used to identify a UDP socket?

Destination IP address.

Source IP address.

Both of the above.

None of the above.

Which of the following is used to identify a TCP socket?

Destination IP address.

Source IP address.

Both of the above.

None of the above.

UDP has a robust congestion control mechanism.

True

False

The UDP checksum is used for which of the following?

Error detection.

Error correction.

Both of the above.

None of the above.

A transport-layer protocol with packet sequence numbers that alternate between 0 and 1 is sometimes called the

alternating-bit protocol.

automatic repeat request protocol.

reliable data transfer protocol.

sliding window protocol.