A company has changed their web hosting policy and now requires SSL certificates on all web servers. Users are reporting that they can no longer access an internal website. Which of the following…

traceroute maps the network path (hops) to a remote host and does not provide any information about listening ports on the local or destination server.

telnet can attempt a connection to a remote port to test reachability from a client perspective but does not enumerate which ports are in a LISTEN state on the local server itself.

The netstat command displays all active TCP/UDP connections and ports currently in a LISTEN state on the local system. Running 'netstat -an' will show port 443 listed as LISTENING if SSL has been properly configured on the web server, making it the definitive tool for confirming whether the server is bound to port 443. This directly answers the diagnostic question without requiring an external connection attempt.

ipconfig displays IP address configuration for network adapters and has no capability to report on listening port status.

nslookup queries DNS to resolve hostnames to IP addresses and cannot determine whether a specific port is open or listening.