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Chapter 2 (Network Models (OSI Model (Layer 2: Data Link (Reads the MAC…

- - - - Reads the MAC address from the Data packet
    - - Establishes the ends/connections to the host
    - - Reads the IP address from the packet
    - - Formats the data so it can be viewed by the user
    - - Send data on to the physical wire
    - - Services that are used with the end user applications
    - - Responsible for the transport protocol and error managing
  - - - All Models are a simplified representation of the real thing
      - A model must have at least all the major functions of the real items.
      - The human model ignores the many different types of body shapes, using only a single "Optimal" figure
      - Models are used in many ways but share common themes.
    - - The network model is a database model conceived as a flexible way of representing objects and their relationships.