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TCP/IP (Transmission Control Protocol/Internet Protocol)

This is a protocol that is used to connect hosts on the Internet. TCP/IP uses two main protocols, one is being TCP and IP. TCP/IP is built into the UNIX operating system the internet uses this, allowing it to be standard for transmitting data over networks. Even network operating systems that have their own protocols, such as Netware, also support TCP/I.

HTTP (Hypertext Transfer Protocol)

 This protocol is used by the Web. It expresses how messages are formatted and transmitted. It allows the Web server and browsers to response to various commands. For example, when you enter a URL into browser, it actually sends an HTTP command to the Web server directing you to Web page.

HTTPS

This is where when you go onto a website the http changes to a https this indicates that the website is secure, this happens on websites such as Facebook amazon and twitter.

SMTP(Simple Mail Transfer Protocol)

This is a protocol for sending e-mails between servers. E-mail systems that send mail over the Internet use SMTP, to send messages from one server to another the messages can then be retrieved with an e-mail client using either POP or IMAP. In addition, SMTP is used to send messages from a mail client to a mail server. This is why you need to specify both the POP or IMAP server and the SMTP server when you configure your e-mail application.