What Is Localhost 127.0.0.1?

in this post i will explain what is localhost in computer network. localhost is a hostname of a
computer,which gives it an IP address of  127.0.0.1. this is consider a loopback address because information sent to it is routed back to the local machine.

with this loopback address you run your website in your local host machine.for exp: if a computer has been configured to provide a website, it is directly run your locally web browser to http://localhost may display its homepage. or you can test whether or not TCP/IP is functioning on the local host.
for this you have to open your cmd run command and type ping 127.0.0.1 and press enter. you should see the result.