protocols

protocols

1. APPLICATION

   • HTTP (s)
     • the protocol used for the WWW (WORLD WIDE WEB) http allows a browser to request individual files from a web server in an orderly way. s stands for secure makng the data more secure through encryption
   • POP
     • (post office protocol) allows emails to be downloaded and/or deleted from a mail server
   • IMAP
     • offers complex commands to manage emails
   • FTP
     • FTP is used to transfer files between a client and a server on a computer (file transfer protocols)
   • SMTP
     • (simple mail transport protocol) used by the mail server to send and recieve emails from other mail servers

2. TRANSPORT

   • TCP
     • (transmission control protocol) divides messages into packets adds sequence numbers to each package so that it can be reasembled and adds a error correctipn imformation so that if there are errors they can be fixed

3. NETWORK

   • IP
     • (internet protocol) this protocol is used for providing the destination of data and to recognise incoming data packets

4. LINK

   • ETHERNET
     • ethernet is a family of protocols they are responsible for sending and recieving data along a network cable ethernet is most commonly used for LANs
   • BLUETOOTH
     • a wireless protocol developed to allow devices very close to one and other to exchange data