Certified Ethical Hacker (CEH v10) — Question 69

Which of the following statements is TRUE?

Answer options

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

Correct answer: A

Explanation

The correct answer is A because sniffers are designed to capture and analyze network traffic at the data link layer, which corresponds to Layer 2 of the OSI model. Options B, C, and D are incorrect as they misidentify the operational layers of sniffers, with B focusing on Layer 3, C suggesting both layers, and D indicating Layer 1.