Question

what is the role of Url?

Answer 1

A uniform resource locator (URL) is the address of a resource on the Internet. A URL indicates the location of a resource as well as the protocol used to access it.

A URL contains the following information:

The protocol used to a access the resource

The the location of the server (whether by IP address or domain name)

The port number on the server (optional)

The location of the resource in the directory structure of the server

A fragment identifier (optional)

Also known as a Universal Resource Locator (URL) or Web address. A URL is a type of uniform resource identifier (URI). In common practice, the term URI isn't used, or is used synonymously with URL, even though this is technically incorrect.

Answer 2

if it is not there we cannot locate that particular protocol