Question: What are the essential characteristics of the reference monitor?

  1. It is versatile, accurate, and operates at a very high speed.
  2. It is tamper-proof, can always be invoked, and must be small enough to test.
  3. It is restricted, confidential, and top secret

Answer: The correct answer of the above question is Option B:It is tamper-proof, can always be invoked, and must be small enough to test.