What is the highest level in the Evaluation Assurance Level scale?

What is the highest level in the Evaluation Assurance Level scale?

• A. Level 7
• B. Level 3
• C. Level 1
• D. Level 5

Answer: (A)

In the Evaluation Assurance Level scale, assurance grows with the depth and rigor of the evaluation, from basic testing up to formal verification. The highest level is the one that requires formal verification of the security properties, along with comprehensive, verifiable evidence of the development process. This level represents the strongest possible confidence in the security claims and is typically reserved for systems where risk is extremely high. Lower levels still provide solid assurance but rely more on testing and inspection rather than formal proofs, so they do not reach the same level of rigor as the top tier.