Defines the system's response to unknown files.

• A. Operating Modes
• B. Audit Mode
• C. Linux Operating Mode
• D. Anti-Exploit Protection

Answer: (A)

Defining how the system handles files it doesn't recognize is managed by the software’s operating modes. This setting determines the overall policy for unknown or unverified content, specifying whether such files should be blocked, allowed with a warning, or only logged for auditing. It covers the range of behaviors the system can take when it encounters unknown files, not just a single action. Anti-Exploit Protection focuses on guarding against exploit techniques rather than the general policy for unknown files, while a Linux Operating Mode would be platform-specific rather than the universal mechanism. An Audit Mode is a possible mode, but it’s one option within the broader concept of operating modes.