What is localhost?An IP attached to a computerA hostname that means this computerA hostname that means this IP

"Localhost" is a hostname that refers to the current device used to access it. It is used to access the network services that are running on the host via the loopback network interface. Using the loopback interface bypasses any local network interface hardware.

To break it down:

1. "Localhost" is a hostname - A hostname is a label that is assigned to a device connected to a computer network and that is used to identify the device in various forms of electronic communication such as the World Wide Web, email or Usenet.

2. "That means this computer" - In the context of servers, localhost refers to the server that a program is running on. For example, if you are running a web server on your own computer, then your computer is often referred to as "localhost".

3. "That means this IP" - The IP address for localhost is 127.0.0.1. This is the loopback address, meaning your computer's way of identifying itself, whether or not it has an assigned IP address.