Certified Network Defender (CND) — Question 7

Alex is administering the firewall in the organization's network. What command will he use to check all the remote addresses and ports in numerical form?

Answer options

• A. netstat -a
• B. netstat -ao
• C. netstat -o
• D. netstat -an

Correct answer: D

Explanation

The correct command is 'netstat -an' because it displays all connections and listening ports in numerical form. The option 'netstat -a' shows all connections but not in numerical format, while 'netstat -o' provides the connections with the owning process ID, not the numerical addresses. 'netstat -ao' combines both but still does not provide the addresses and ports in the required numerical format.