Multiple choice

A PC cannot connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?

  1. Use the ipconfig /all command at the host's command prompt.

  2. Use the ping 127.0.0.1 command at the command prompt.

  3. Use the traceroute command at the command prompt to identify any failures on the path to the gateway.

  4. Use FTP to check for connectivity to remote sites.

  5. Download a troubleshooting tool from the PC manufacturer's website.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pinging 127.0.0.1 (localhost loopback) verifies that the TCP/IP stack is functioning on the local PC. If this ping succeeds, the TCP/IP protocol stack is working properly. If it fails, the stack is corrupted and needs to be reinstalled. ipconfig only shows configuration, traceroute won't work if local stack is broken, and FTP tests connectivity not the stack itself.

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