An ADP system that ensures all users have both a security clearance and need-to-know status is known as?

The answer is "Dedicated Security Mode" because this mode is specifically designed to enforce stringent access controls based on security clearances and need-to-know criteria. In a Dedicated Security Mode system, the information and resources accessed are restricted only to those users who possess the appropriate security clearance and have a legitimate requirement to access that specific information. This ensures a high level of security and minimizes the potential for unauthorized access, thereby enhancing the overall protection of sensitive information.

In contrast, other modes, such as Classified Security Mode, typically encompass broader classifications without the same stringent focus on both security clearance and need-to-know status tailored specifically for individual users. Restricted Security Mode often applies similar restrictions but does not necessarily ensure a dual validation of clearance and need-to-know for access. Controlled Security Mode allows for a level of access based on specific control measures but may not encompass the same level of precision in determining user eligibility based on security clearance and operational need. Therefore, Dedicated Security Mode is the most appropriate choice for ensuring both criteria are met.