John works as a professional Ethical Hacker for SecureEnet Inc. The company has a
Windowsbased network. All client computers run on Windows XP. A project has been assigned to
John to investigate about the open ports responsible for various malicious attacks on the network.
John wants to use the DOS command-line utility to find out the open ports.
Which of the following DOS commands will John use to accomplish the task?

A.
nslookup

B.
tracert and pathping

C.
netstat

D.
nbtstat

Explanation: