CompTIA Network+ (N10-009) — Question 16

A user notifies a network administrator about losing access to a remote file server. The network administrator is able to ping the server and verifies the current firewall rules do not block access to the network fileshare. Which of the following tools would help identify which ports are open on the remote file server?

Answer options

• A. dig
• B. nmap
• C. tracert
• D. nslookup

Correct answer: B

Explanation

The correct answer is B, nmap, which is a network scanning tool used to discover hosts and services on a computer network by sending packets and analyzing the responses. Options A (dig) and D (nslookup) are used for DNS queries and do not provide port information, while C (tracert) is used to trace the route to a network host, not to check open ports.