What IP address does localhost usually resolve to?

What IP address does localhost usually resolve to?

• 127.0.0.1
• 192.0.2.0
• 127.0.0.0
• 127.255.255.255 

 

EXPLANATION

  The IP address 127.0.0.1 is a special-purpose IPv4 address called localhost or loopback address. All computers use this address as their own but it doesn't let them communicate with other devices like a real IP address does.

Your computer might have the 192.168.1.115 private IP address assigned to it so that it can communicate with a router and other networked devices. However, it still has this special 127.0.0.1 address attached to it to mean "this computer," or the one you're currently on.

The loopback address is only used by the computer you're on, and only for special circumstances. This is unlike a regular IP address that is used to transfer files to and from other networked devices.

For example, a web server running on a computer can point to 127.0.0.1 so that the pages can be run locally and tested before it's deployed.