~URI~

• URI stands for Uniform Resource Identifier. URI is a string of characters used to identifier a name or location a resource on the Internet. URI have two types which is URL and URN. 

• URL stands for Uniform Resource Locator. There are 4 parts in a URL:

1.       Protocol: The application-level protocol used by the client and server (e.g. HTTP, FTP, and   telnet).

2.       Hostname: The DNS domain name (e.g. www.test101.com) or IP address (e.g. 192.128.1.2) of the server.

3.       Port: The TCP port number that the server is listening for incoming requests from the clients.

4.       Path-and-file-name: The name and location of the requested resource.

         Example of URL,

Common schemes: http, https, ftp, mailto, file, rtsp

• URN stands for Uniform Resource Name. URN is an Internet resource with a name.

           Example of URL, 

urn:def://blue_laser