Which acronym corresponds to the area where security identification must be displayed?

• A. SSI
• B. TSA
• C. SIDA
• D. UAX

Answer: (C)

The area where you must display your security ID is called the Security Identification Display Area, or SIDA. This term designates the restricted zones in an airport—airside, ramps, and other secured spaces—where access is controlled and badges must be worn visibly to prove you’re authorized to be there. Displaying the ID helps security quickly verify who is allowed in these areas and prevents unauthorized entry.

The other options don’t refer to a physical area for ID display: one is a designation for sensitive security information, another is the name of the security agency, and the last isn’t a standard airport-access term.