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  • Protocols
    • IP
      • Internet Protocol
      • Used in TCP/IP (2 main internet protocols)
      • Gives each device on the internet a unique address
      • Included in data packets
      • Broken into 4 8-bit numbers (octets)
      • IPv4: 32-bit
      • IPv6: 128-bit
      • IPv5: used for an experimental real-time streaming protocol
      • Used by internet layer in protocol layering
    • HTTP
      • Hyper Text Transfer Protocol
      • All web addresses start with http
      • https addresses: secure and encrypted
      • https addresses store personal/bank info
      • Transfers webpages from server to client
    • IMAP
      • Internet Message Access Protocol
      • Used on http webpages
      • Not used by email clients
      • Used to send and receive emails
      • Used over TCP/IP connections
    • FTP
      • File Transfer Protocol
      • Used to transfer large files
      • Allows transfer of files between computers
      • Used for organising web servers for websites
      • Can get access to private area on FTP servers to upload files
    • SMTP
      • Simple Mail Transfer Protocol
      • Used to send emails
      • Only used on email clients
      • Emails stored even after you delete them
      • Need internet connection
    • TCP
      • Transmission Control Protocol
      • Used whenever you send data to another computer via internet
      • Used by transport layer in protocol layering
      • Defines how data is SENT / TRANSMITTED / RECEIVED over internet
      • Defines 4 layers for data transmission
    • POP3
      • Post Office Protocol
      • Receives emails
      • Only used on email clients
      • Emails permanently deleted when you delete them
      • Don't need internet connection to view emails


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