BROWSER & URL

Browser
A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web. The word "browser" seems to have originated prior to the Web as a generic term for user interfaces that let you browse (navigate through and read) text files online. By the time the first Web browser with a graphical user interface was generally available (Mosaic, in 1993), the term seemed to apply to Web content, too. Technically, a Web browser is a client program that uses the Hypertext Transfer Protocol (HTTP) to make requests of Web servers throughout the Internet on behalf of the browser user.  What is URL?   URL (Uniform Resource Locator, previously Universal Resource Locator) - pronounced YU-AHR-EHL or, in some quarters, UHRL - is the address of a file (resource) accessible on the Internet. The type of file or resource depends on the Internet application protocol. Using the World Wide Web's protocol, the Hypertext Transfer Protocol (HTTP), the resource can be an HTML page (like the one you're reading), an image file, or any other file supported by HTTP. The URL contains the name of the protocol required to access the resource, a domain name that identifies a specific computer on the Internet, and a pathname (hierarchical description of a file location) on the computer. On the Web (which uses the Hypertext Transfer Protocol), an example of a URL is:        http://www.ietf.org/rfc/rfc2396.txt Which describes a Web page to be accessed with an HTTP (Web browser) application that is located on a computer named www.ietf.org . The pathname for the specific file in that computer is /rfc/rfc2396.txt. An HTTP URL can be for any Web page, not just a home page, or any individual file. Examples: http://dawn.com http://www.vu.edu.pk http://www.smeda.org.pk