DEVFYI - Developer Resource - FYI

What is ICMP?

Networking Interview Questions and Answers

(Continued from previous question...)

105. What is ICMP?

ICMP is Internet Control Message Protocol, a network layer protocol of the TCP/IP suite used by hosts and gateways to send notification of datagram problems back to the sender. It uses the echo test / reply to test whether a destination is reachable and responding. It also handles both control and error messages.

(Continued on next question...)

Other Interview Questions