Which of the following correctly lists the layers of the OSI model starting at Layer 1?

Question

Options

• AData Link, Physical, Network, Transport, Presentation, Session, Application.
• BPhysical, Data Link, Network, Transport, Presentation, Session, Application.
• CPhysical, Data Link, Transport, Network, Session, Presentation, Application.
• DPhysical, Data Link, Network, Transport, Session, Presentation, Application.

• A
  2% (1)
• B
  2% (1)
• C
  5% (2)
• D
  90% (38)

Explanation

The seven OSI layers in order from Layer 1 to Layer 7 are: Physical (1), Data Link (2), Network (3), Transport (4), Session (5), Presentation (6), Application (7). A common mnemonic is 'Please Do Not Throw Sausage Pizza Away.' Option B is nearly correct but swaps Session and Presentation (placing Presentation at Layer 5 and Session at Layer 6), which is wrong. Option D has the correct order.

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