To ensure protection of combinations, which actions are recommended?

• A. Limit knowledge to the minimum number of authorized persons
• B. Maintain a record of all persons who know the combination
• C. Protect the combination according to the highest classification
• D. All of the above

Answer: (D)

Protecting combinations relies on layered safeguards that cover access, accountability, and handling. Limiting knowledge to the minimum number of authorized people reduces the chance the secret is exposed and narrows who could disclose it. Keeping a record of everyone who knows the combination adds a traceable trail, so you can verify access and quickly spot any potential exposure. Protecting the combination according to the highest classification ensures that storage, handling, and transmission controls match the information’s sensitivity. When these practices are combined, you address who can access, who knows, and how it’s protected, giving the strongest overall protection. All of the above is the best approach.