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Palo_Alto_Networks

PCCET · Question #86

Which three layers of the OSI model correspond to the Application Layer (L4) of the TCP/IP model?

The correct answer is B. Application, Presentation, and Session. Application (Layer 4 or L4): This layer loosely corresponds to Layers 5 through 7 of the OSI model. Transport (Layer 3 or L3): This layer corresponds to Layer 4 of the OSI model. Internet (Layer 2 or L2): This layer corresponds to Layer 3 of the OSI model. Network Access (Layer 1

Submitted by asante_acc· Apr 18, 2026Cybersecurity Foundations

Question

Which three layers of the OSI model correspond to the Application Layer (L4) of the TCP/IP model?

Options

  • ASession, Transport, Network
  • BApplication, Presentation, and Session
  • CPhysical, Data Link, Network
  • DData Link, Session, Transport

How the community answered

(29 responses)
  • A
    7% (2)
  • B
    90% (26)
  • C
    3% (1)

Explanation

Application (Layer 4 or L4): This layer loosely corresponds to Layers 5 through 7 of the OSI model. Transport (Layer 3 or L3): This layer corresponds to Layer 4 of the OSI model. Internet (Layer 2 or L2): This layer corresponds to Layer 3 of the OSI model. Network Access (Layer 1 or L1): This layer corresponds to Layers 1 and 2 of the OSI model.

Topics

#OSI Model#TCP/IP Model#Network Layers#Protocol Stack

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