What is Physical Security?

• A. Unauthorized disclosure could reasonably be expected to cause EXCEPTIONAL GRAVE danger to national security
• B. Physical measures to safeguard classified equipment, materials, and documents from physical access or observation by unauthorized personnel.
• C. Promote frequency selections for operations
• D. 200-400m

Answer: (B)

Physical security is the set of measures designed to prevent unauthorized physical access to equipment, materials, and documents, and to prevent their observation by unauthorized personnel. It covers barriers and controls like locks, access badges, secured rooms and containers, guards, surveillance cameras, alarms, and proper handling and storage of classified items. The goal is to protect tangible assets from theft, tampering, damage, or espionage. Other choices describe outcomes of disclosure, unrelated topics, or amounts, which don’t define what physical security actually is.