Multilevel security in military terms means multifactor security.

• A. True
• B. False
• C. Not defined
• D. Depends

Answer: (B)

Multilevel security focuses on access control across different classification levels and compartments, not on how many authentication factors are used. In military contexts, data is labeled with a level (like unclassified, confidential, secret, top secret) and possibly categories, and a user can access only information at or below their clearance and only for the compartments they’re permitted to use. This is enforced by policies such as no-read-up and no-write-down, which govern how information can flow between levels. The concept is about information flow and authorization, not the authentication method itself. So defining MLS as multifactor security is not accurate—the authentication approach (whether MFA is used) is a separate concern from the access-control mechanism that enforces multilevel security.