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SSCP · Question #356

The session layer provides a logical persistent connection between peer hosts. Which of the following is one of the modes used in the session layer to establish this connection?

The correct answer is A. Full duplex. OSI Layer 5 (Session layer) supports three dialog control modes: simplex (one-way only), half duplex (two-way but only one direction at a time), and full duplex (simultaneous two-way communication). Full duplex is a valid and standard session layer mode. 'Synchronous' and…

Submitted by minji_kr· Apr 18, 2026Network and Communications Security

Question

The session layer provides a logical persistent connection between peer hosts. Which of the following is one of the modes used in the session layer to establish this connection?

Options

  • AFull duplex
  • BSynchronous
  • CAsynchronous
  • DHalf simplex

How the community answered

(41 responses)
  • A
    90% (37)
  • B
    2% (1)
  • C
    2% (1)
  • D
    5% (2)

Explanation

OSI Layer 5 (Session layer) supports three dialog control modes: simplex (one-way only), half duplex (two-way but only one direction at a time), and full duplex (simultaneous two-way communication). Full duplex is a valid and standard session layer mode. 'Synchronous' and 'asynchronous' describe timing/clocking methods at the Physical/Data Link layers, not session-layer modes. 'Half simplex' is not a recognized OSI term.

Topics

#OSI Model#Session Layer#Communication Modes#Network Protocols

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