network layer

Question

Which of following is false in case of ICMP protocol? and why?

A Parameter problem message is transmitted by ICMP, when a router is congested..

B When noise has modified some IP header bits, then calculated IP header checksum will not be equal to received header checksum, then source quench message will be transmitted

C No ICMP error message will be transmitted for the loop back address packet, if it is lost.

Comments

A and B are false. The reason for A is given in B and vice versa.

C is true.