When a router cannot route a datagram or host cannot deliver a datagr – McqOptions

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1.	When a router cannot route a datagram or host cannot deliver a datagram, the datagram is discarded and the router or the host sends a ____________ message back to the source host that initiated the datagram.
A.	Destination unreachable
B.	Source quench
C.	Router error
D.	Time exceeded
Answer» B. Source quench

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