CompTIA CASP+ (CAS-003) — Question 373

A penetration tester is trying to gain access to a building after hours as part of a physical assessment of an office complex. The tester notes that each employee touches a badge near a small black box outside the side door, and the door unlocks. The tester uses a software-defined radio tool to determine a 125kHz signal is used during this process. Which of the following technical solutions would be BEST to help the penetration tester gain access to the building?

Answer options

• A. Generate a 125kHz tone.
• B. Compromise the ICS/SCADA system.
• C. Utilize an RFID duplicator.
• D. Obtain a lock pick set.

Correct answer: A

Explanation

The best solution is to generate a 125kHz tone, as this directly mimics the signal used to unlock the door. Compromising the ICS/SCADA system is unrelated to accessing the physical entry point, while using an RFID duplicator may not guarantee success with the specific signal. Obtaining a lock pick set is also not applicable, as the door is electronically controlled.