Answer :
The protocols that allows the exchange of messages by host as an indication for packet delivery problem is Internet control message protocol (ICMP).
- Internet Control Message Protocol (ICMP) can be regarded as control channel that us used in reporting errors as well as performing network diagnostics.
- In this ICMP process, a message will be sent back to the sender from the receiver, in a case whereby the data doesn't appear as it should.
Some types of errors that can be handled by this protocol are;
- destination unreachable
- time exceeded
- source quench
- parameter problems
Therefore, ICMP is been utilized by network devices in send error messages as well as operational information
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