Multiple choice

Refer to the exhibit. Why would the response shown be displayed after issuing the command ping 127.0.0.1 on a PC?

  1. The IP settings are not properly configured on the host.

  2. Internet Protocol is not properly installed on the host.

  3. There is a problem at the physical or data link layer.

  4. The default gateway device is not operating.

  5. A router on the path to the destination host has gone down.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ping 127.0.0.1 command tests the local TCP/IP stack's loopback functionality. When this fails, it indicates that Internet Protocol (TCP/IP) is not properly installed or is corrupted on the host system. The 127.0.0.1 address never leaves the host computer, so IP settings, default gateway, physical layer problems, or router issues are irrelevant to this specific test. This is a fundamental test of whether the network software itself is functional.

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