The command that would provide information about processes listening on network ports in a Linux server is: A. ss -plnt This command will list all listening TCP ports along with the process information. So, option A is the correct choice.

I use: nmap localhost

A. ss -plnt Explanation: The ss command in Linux is used to display detailed socket information, such as which processes are listening on which ports, among other things. The -p option displays the process ID and process name that are using the socket. The -l option displays only listening sockets. The -n option displays the port numbers in numerical form, and the -t option displays only TCP sockets. C. netstat -pn - This command displays information about network connections, routing tables, and a variety of network statistics. The -p option shows the process ID and process name associated with each socket, but it may not work on all systems, and netstat itself has largely been deprecated in favor of newer utilities like ss.