According to the HTTP standard, HTTP requests can use a variety of request methods. HTTP1.0 defines three request methods: GET, POST, and HEAD methods. HTTP1.1 added five new request methods: OPTIONS, PUT, DELETE, TRACE, and CONNECT methods.
E-mail is one of the most important applications of TCP / IP. You do not use TCP / IP when you write mail. When you write mail, you use e-mail programs, such as Lotus Notes, Microsoft Corp. Outlook, or Netscape Communicator and so on.
TCP / IP is the Internet's communication protocol. The TCP / IP communication protocol is a description of the rules that computers must follow to comply with these rules before computers can communicate with each other.
All W3C standards (since 1996), including HTML, XHTML, and XML, define an internal character set called Unicode (ISO 10646). This character set is natively used by all modern web browsers. Most of the documents transmitted on the internet do not use this Unicode character set.