CompTIA Network+ (N10-009) — Question 36

A network administrator is troubleshooting an application issue after a firewall change. The administrator has confirmed that the port and protocol are accessible to the user, but the application is still having issues. Which of the following tools allows the administrator to look at traffic on the application layer of the OSI model?

Answer options

• A. ifconfig
• B. tcpdump
• C. nslookup
• D. traceroute

Correct answer: B

Explanation

The correct answer is B, tcpdump, as it is a packet analyzer that can capture and display network traffic, allowing the administrator to inspect application layer data. A, ifconfig, is used for network interface configuration, C, nslookup, is for DNS queries, and D, traceroute, is used to track the route packets take to a destination, none of which focus on application layer traffic.