COMPUTER NETWORKING

Detailed explanation-1: -The ifconfig command uses the loopback address for configuration and testing, as explained in Monitoring the Interface Configuration With the ifconfig Command. Every system on a TCP/IP network must use the IP address 127.0. 0.1 for IPv4 loopback on the local host.

Detailed explanation-2: -The loopback address is only used by the computer you’re on for special circumstances, unlike a regular IP address that transfers files to and from other networked devices. For example, if you want to test a web server running on your own computer before deploying it, you can point it to 127.0. 0.1 (aka “localhost”).

Detailed explanation-3: -Address Class: The 127.0. 0.1 IP address belongs to Class A of IPv4 addresses, while the 0.0. 0.0 IP address does not belong to any specific address class.