Which statement about PMTUD is true?

Which statement about PMTUD is true?
A . It is supported by TCP and UD
C . GRE tunnels use PMTUD to fragment data packets by default.
D . It is used to prevent fragmentation of packets at the endpoint of a TCP connection.
E . It is used to prevent fragmentation of packets traveling across a smaller MTU link between two endpoints.
F . It increases the connection’s send MSS value to prevent fragmentation.

View Answer

Answer: A