CompTIA CASP+ (CAS-004) — Question 558

Which of the following is the MOST important security objective when applying cryptography to control messages that tell an ICS how much electrical power to output?

Answer options

• A. Improving the availability of messages
• B. Ensuring non-repudiation of messages
• C. Enforcing protocol conformance for messages
• D. Assuring the integrity of messages

Correct answer: D

Explanation

The correct answer is D because assuring the integrity of messages is crucial to ensure that the commands sent to the ICS have not been altered or tampered with. Options A, B, and C, while important, do not directly address the need to maintain the correctness and reliability of the messages that control electrical power outputs.