Which Windows command shows listening ports and current TCP connections?

• A. netstat -ano Windows
• B. ss -tuln
• C. netstat -tunp on Linux
• D. arp -a

Answer: (A)

Viewing sockets on Windows shows both listening ports and current TCP connections, which helps you see what services are exposed and who is connected. The Windows netstat utility with options -a, -n, and -o does exactly this: -a lists all sockets (listening and established), -n displays addresses and ports numerically, and -o includes the process ID owning each connection. Running netstat -ano gives you a complete view of all ports in use, along with the program that owns each one, so you can identify which process is listening or communicating. To map a PID to a specific program, check Task Manager’s Details tab or use tasklist with a PID filter. The other choices come from Linux tools or serve different purposes: ss is a Linux command; the Linux variant of netstat shown wouldn’t run on Windows; and arp -a shows the ARP table, not ports or TCP connections.