An administrator suspects that a gateway machine on the network has failed but they are unsure which machine. Which of the following commands will help locate the problem?

`ps` displays information about running processes on the local system, not network path issues.

`netstat` displays network connections, routing tables, and interface statistics on the local machine, but it doesn't map the full network path to a remote host.

`nslookup` is used for querying DNS servers to resolve hostnames to IP addresses, which is not directly for locating a failed network gateway.

`ifconfig` (or `ip` in modern Linux) displays and configures network interface parameters on the local system, but it does not trace network paths.

`traceroute` sends packets to a destination and displays the IP addresses of all intermediate routers (hosp) along the path, allowing an administrator to identify a failed gateway by observing where the packets stop or encounter high latency. By tracing the route to an external destination, the output can pinpoint the last reachable hop before a suspected failed gateway.