Protocols

Protocols

1. Applications

   • IMAP
     • Internet Message Access Protocol: used for email, accessible from multiple devices.
   • FTP
     • File Transfer Protocol: Network protocol used to send files between PC and server
   • POP
     • Basic email protocol - one server and mailbox, messages are downloaded to device and deleted from server.
   • SMTP
     • Used to transfer messages between mail servers.
   • HTTP (s)
     • Hypertext transfer Protocol: used to send and recieve webpages. s stands for secure

2. Transport

   • TCP
     • Cuts data into packets, adds sequencing numbers and a checksum.

3. Network

   • IP
     • Adds destination and source address to packets

4. Link

   • Bluetooth
     • Wireless communication protocol for devices within 10m of each other.
   • Ethernet
     • Family of protocols for transfer of data along cables. Handles hardware and specifies data format.