OSI 7 layer model mnemonics

top down

All People Seem To Need Data Processing

bottom up

Please Do Not Touch Steve’s Pet Alligator

the layers:

  • Application

    • network process to application

  • Presentation

    • data representation, encryption, convert machine dependent data to machine independent data

  • Session

    • interhost communication, session management

  • Transport

    • end to end connections, reliability, flow control

  • Network

    • path determination and logical addressing

  • Data Link

    • physical addressing

  • Physical

    • media, signaling, binary transmission