The anchor reference and the object referred to constitute a hypertext link. Links are what make the World Wide Web a web. Each of the site's individual presentations can be referred to as a page. A page is an HTML file, has its own URL , and can be requested directly from a browser . Plug-ins play sound or motion video or perform other functions that enhance the transmission of information.
Protocols exist at several levels in a telecommunication connection.
On the Internet, there is TCP which uses a set of rules to exchange messages with other Internet points at the information packet level and IP which uses a set of rules to send and receive messages at the Internet address level. A search engine is a software program on the Internet that receives a request for specific information located on the Web. The search engine compares the request to the entries in an index of search terms and returns results of Web sites containing relevant information. A Web client is the requesting program associated with the user. The Web browser in your computer is a client that requests HTML files from Web servers.