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You are here: Home / CompTIA / Network+ / Section I: Networking Concepts / Chapter 5: Common Network Protocols / Application Protocols

Application Protocols

The most common application protocols are as follows:

  • HTTP
  • HTTPS
  • E-mail protocols (SMTP, POP3, IMAP)
  • FTP
  • TFTP
  • SIP
  • RTP

 
HTTP
Hypertext Transfer Protocol (HTTP) is the primary protocol used across the Internet between a browser and a Web server, which is a process known as Web browsing.

When a client PC (Web browser) makes a request, the type of request will determine the destination port number used. Websites are often listening on TCP port 80, a well-known port identifying the HTTP . . .

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