Explain the use of Internet Control Message Protocol (ICMP).

Internet Control Message Protocol is one of the important protocols in the Internet Protocol suite.
It is mainly used in operating system of networked computers, for the purpose of sending error messages, for example, a requested service is unavailable or the host could not be reached.
It is not directed by the network applications. ICMPs are utilized by routers, hosts for communicating the updates or error information to other routers.

More Blackberry Interview Quesions And Answers