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Data Transfer Models ​

OSI Model (7 Layers) ​

  1. Physical Layer - Bits 0,1
    • Hardware, cables, and signals.
  2. Data Link Layer
    • Frame, error checking, and flow control.
  3. Network Layer
    • IP, routing, and multicast.
  4. Transport Layer
    • TCP, UDP, and HTTP.
  5. Session Layer
    • TCP, UDP, and HTTP.
  6. Presentation Layer
    • HTML, CSS, and JavaScript.
  7. Application Layer
    • Web Servers, Web Browsers, and Web Apps.

TCP - Transmission Control Protocol.

  • 3-Way handshak

UDP - User Datagram Protocol.

1-> 1.1-> 2-> 3 HTTP - Hypertext Transfer Protocol

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