Protocols

Protocols

1. application

   • http(s)
     • http allows a browser to request files from a web server
     • https encrypts
   • pop
     • downloads emails from a mail server
     • can only handle 1 mailbox
     • once downloaded messeges cant be viewed from other devices
     • doesnt sopport complex searches
   • imap
     • like pop but more complex
     • can be accessed on multiple devices
     • can hndle multiple mailboxes
   • ftp
     • used to transfer files between client and server
   • smtp
     • allows messages to be sent between email servers

2. transport

   • tcp
     • prepares messages for transmition

3. network

   • IP
     • provides destiation adress

4. link

   • Bluetooth
     • allows devices that are very close to one another to exchange data
   • Ethernet
     • a family of protocols responsible for sending and receiving data along a network cable