Respuesta :
The statement is true. A protocol at the network level is ICMP. ICMP messages relay information about problems with network connectivity to the origin of the corrupted transmission.
It transmits control messages such as source quench, source route failure, and destination network inaccessible. This indicates that IP does not have anything to do with error checking or error control. ICMP was created in part to make up for this deficiency. But ICMP only reports faults; it doesn't fix them. It is up to the higher-level protocols to fix errors. Since the source and destination IP addresses are the only data that can be included in the datagram around the route, error notices are continuously sent to the original source. Error checking and error management are not a problem for IP because it is an unreliable communication. ICMP was created in part to make up for this deficiency. Errors are merely reported by ICMP; they are not fixed.
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