問題文
An operator must find out at which hop packets toward a remote destination stop making progress. Which tool is intended for that?
選択肢
- ping, which reports whether the destination answers and names the hop at which the replies stop.
- A show command for the routing table, which lists the entries the device holds and therefore reveals which hop along the path has stopped forwarding the traffic toward that destination.
- traceroute, which reports the sequence of hops that respond along the path.
- telnet to the destination on a chosen port, and each intermediate device reports itself while the session is being set up.