ICS/SCADA Cybersecurity — Question 31

At what layer does a switch normally operate?

Answer options

• A. 4
• B. 7
• C. 2
• D. 3

Correct answer: C

Explanation

A switch primarily functions at Layer 2 of the OSI model, which is the Data Link layer, where it manages MAC addresses and frames. Layers 3 and 4 relate to network and transport functions, respectively, while Layer 7 refers to the application level, which is not where switches operate.