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…

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?