Two machines can use the timestamp request and timestamp replay messages to determine the ___________ needed for an IP datagram to travel between them.
A. Half-trip time
B. Round-trip time
C. Travel time for the next router
D. Time to reach the destination/source
Answer:B
Two machines can use the timestamp request and timestamp replay messages to determine the ___________ needed for an IP datagram to travel between them.
A. Half-trip time B. Round-trip time C. Travel time for the next router D. Time to reach the destination/source
Explanation: The round-trip time refers to the total time taken combining the time taken for a packet sent from a source to reach a destination and the time taken the acknowledgement sent by the destination to reach the source. The Router sends destination unreachable message if the destination is not found.