CompTIA Network+ - Network Troubleshooting Tools

By Jordan Blake · Updated Jul 10, 2026

Questions19
Passing Score75%
Format53% Multiple Choice
Sessions Logged1,513
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Question catalog for this preview

Catalog listing of the 5 preview questions for this quiz.

Question 1

?? Multiple Choice (Hard)

When running "netstat -an" and observing a LISTENING TCP port you don't recognize, what is your next troubleshooting step?

Answer choices

  • A. Immediately block the port in the firewall

  • B. Identify the process using the port via "netstat -anb" (Windows) or "ss -tulnp" (Linux), then investigate

  • C. Reboot the server to clear all connections

  • D. Disable the network adapter to prevent further activity

Question 2

?? True/False (Hard)

A protocol analyzer (like Wireshark) placed between two network devices can detect a man-in-the-middle attack in progress by revealing unexpected certificate changes.

Answer choices

  • A. True

  • B. False

Question 3

?? True/False (Easy)

The traceroute (tracert in Windows) command shows the path packets take to reach a destination and the delay at each hop.

Answer choices

  • A. True

  • B. False

Question 4

?? Multiple Choice (Easy)

What does the ping command test?

Answer choices

  • A. DNS resolution of a hostname

  • B. Basic network connectivity and round-trip time to a host using ICMP echo requests

  • C. The route packets take to a destination

  • D. Open TCP ports on a remote host

Question 5

?? Multiple Choice (Easy)

Which command displays your computer's IP address, subnet mask, and default gateway in Windows?

Answer choices

  • A. ifconfig

  • B. ipconfig

  • C. ip addr

  • D. netstat -i