CISSP – Information Systems Security Architecture Professional (ISSAP) — Question 16

Which of the following is a correct sequence of different layers of Open System Interconnection (OSI) model?

Answer options

• A. Physical layer, data link layer, network layer, transport layer, presentation layer, session layer, and application layer
• B. Physical layer, network layer, transport layer, data link layer, session layer, presentation layer, and application layer
• C. application layer, presentation layer, network layer, transport layer, session layer, data link layer, and physical layer
• D. Physical layer, data link layer, network layer, transport layer, session layer, presentation layer, and application layer

Correct answer: D

Explanation

The correct answer is D, as it accurately represents the OSI model layers in the proper sequence from the lowest layer (Physical) to the highest layer (Application). Options A and C contain the layers in the wrong order, and option B incorrectly places the data link and network layers in the incorrect position.