Certified Ethical Hacker (CEH v11) — Question 108

Which of the following statements is TRUE?

Answer options

• A. Packet Sniffers operate on the Layer 1 of the OSI model.
• B. Packet Sniffers operate on Layer 2 of the OSI model.
• C. Packet Sniffers operate on both Layer 2 & Layer 3 of the OSI model.
• D. Packet Sniffers operate on Layer 3 of the OSI model.

Correct answer: B

Explanation

The correct answer is B because Packet Sniffers primarily operate at Layer 2, where they capture data packets directly from the network link. Options A, C, and D are incorrect since they misrepresent the OSI layer at which Packet Sniffers function.