Which ICMP reply does a router send in order to indicate that the router cannot use the strict or loose source routing path specified in the original packet?
A)Code 2: Protocol Unreachable
B)Code 3: Port Unreachable
C)Code 4: Fragmentation Needed and Don't Fragment Was Set
D)Code 5: Source Route Failed

Question

Quizplus · Accepted Answer

The correct ICMP reply for indicating that a router cannot use the strict or loose source routing path specified in the original packet is "Code 5: Source Route Failed." This message is specifically designed to inform the sender that the requested source route cannot be used.

Which ICMP Reply Does a Router Send in Order to Indicate