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Introduzione del modello OSI (The OSI Model Stack (Ha dei Upper Layers …

- - - - Presentation Layer
        
        Session Layer
        
        SAUSAGE
        
        Manages the host. Makes sure session is maintained.
        
        PIZZA
        
        encrypting data. Taking from 1 format to another. Like HTML to the web browser
      - AWAY
        
        iNTERACTING WITH APPLICATION TO CONNECT TO NETWORK, i.e., email - POP 3 & SMTP interact with microsoft outlook to send emails.
  - - - Network Layer
        
        Data Link Layer
        
        Physical Layer
        
        PLEASE
        
        Data being sent across the wire. Is it a frequency over the air (wireless), fiberoptic, copper lines etc.
        
        DO
        
        Mac Address & Logical link control (LLC)
        
        NOT
        
        This is where routers operate. path determination, ip addresses. This is called Packet.
      - THROW
        
        Routing, switching, cabling, wifi signals - this ensures it's all reliable. TCP-reliable /UDP-unreliable