Types of network protocols

• How is Ethernet a protocol

  • Ethernet is a protocol that defines how data should be physically transmitted between network hardware.
  • Ethernet is used in wired networks.

  
• How is Wi-fi a protocol

  • Wi-Fi (802.11x) is a set of protocols defining how data should be transmitted using radio waves.
  • Wi-Fi is used in wireless networks

  
• TCP/IP is the most important protocol

  • TCP/IP is the protocol which dictates how data is sent between networks (e.g. over the Internet) 
  • It is made up of 2 protocols : TCP and IP
• What is TCP

  • TCP stands for Transmission Control Protocol 
  • It sets the rules for how devices connect on the network 
  • It’s in charge of splitting data into packets and reassembling the packets back into the original data once they reach the receiving device

  
• What is IP

  • IP stands for Internet Protocol 
  • It is responsible for directing packets to their destination across the network

  
• There are several other protocols that build upon TCP/IP to do specific Internet-based tasks
• What is HTTP

  • HTTP stands for Hyper Text Transfer Protocol 
  • It is used by web browsers to access websites and communicate with web servers

  
• What is HTTPS

  • HTTPS stands for Hyper Text Transfer Protocol Secure
  • It is a more secure version of HTTP 
  • It encrypts all information sent and received

  
• What is FTP

  • FTP stands for File Transfer Protocol 
  • It is used to access, edit and move files between devices on a network (e.g.access files on a server from a client computer)

  
• What is POP3

  • POP3 stands for File Post Office Protocol version 3
  • It is used to retrieve emails from servers 
  • The server holds the email until you download it , at which point it is deleted from the server

  
• What is IMAP

  • IMAP stands for Internet Message Access Protocol
  • It is used to retrieve emails from servers 
  • The server holds the email until you delete it yourself , as when you download the email , you only download a copy of it 
  • It is used by most web-based email clients

  
• What is SMTP


  • SMTP stands for Simple Mail Transfer Protocol 
  • It is used to send emails 
  • It also transfers emails between servers