NSE 7 – OT Security 6.4 — Question 10

What triggers Layer 2 polling of infrastructure devices connected in the network?

Answer options

• A. A failed Layer 3 poll
• B. A matched security policy
• C. A matched profiling rule
• D. A linkup or linkdown trap

Correct answer: D

Explanation

The correct answer is D because Layer 2 polling is often triggered by changes in the link status of connected devices, such as a linkup or linkdown event. The other options, while related to network monitoring, do not directly initiate Layer 2 polling.