LLMResponse MA.L2-3.7.2.d

I'll help you determine the most effective approach for collecting evidence and evaluating assessment objective "[d] personnel used to conduct system maintenance are controlled" in practice MA.L2-3.7.2.

Ranking Evidence Types for Assessment Objective [d]

Based on the CMMC Assessment Guide and the assessment objects you provided, I would rank the evidence types for this objective as follows:

1. **Documents** - Most valuable because they establish the personnel control framework:

  - Personnel access authorization records for maintenance activities
  - System maintenance policies defining who can perform maintenance
  - Procedures for approving maintenance personnel
  - Role-based access control documentation for maintenance activities
  - Maintenance personnel training and certification records

2. **Artifacts** - Second most valuable as they demonstrate implementation:

  - Access logs showing only authorized personnel performing maintenance
  - Authentication records for maintenance sessions
  - Approval forms for maintenance activities
  - Records of supervision during maintenance
  - Personnel assignment documentation for maintenance tasks

3. **Interview** - Third most valuable:

  - Discussions with maintenance personnel about access controls
  - Verification of understanding of who is authorized to perform maintenance
  - Confirmation of personnel controls from security staff
  - Validation of accountability processes

4. **Physical Review** - Fourth most valuable:

  - Observation of physical access controls for maintenance personnel
  - Verification of maintenance personnel identification processes
  - Observation of supervision for maintenance activities

Prioritizing Assessment Approaches

For assessment objective [d], I recommend prioritizing the assessment approaches in this order:

1. **Examine** - Highest priority to establish the framework for personnel controls:

  - Review maintenance personnel authorization documentation
  - Examine access control lists for maintenance systems
  - Review maintenance policies defining authorized personnel
  - Examine records showing only approved personnel perform maintenance

2. **Interview** - Second priority to validate implementation and understanding:

  - Interview IT managers about personnel authorization processes
  - Discuss with maintenance personnel their understanding of access limitations
  - Verify security personnel understand maintenance access controls
  - Confirm supervision requirements are understood and followed

3. **Test** - Third priority to verify controls function as designed:

  - Test access controls to verify only authorized personnel can perform maintenance
  - Verify supervision mechanisms for maintenance personnel
  - Test authentication requirements for maintenance access
  - Validate monitoring of maintenance personnel activities

This approach allows you to first establish what controls exist for maintenance personnel (Examine), then confirm personnel understanding and adherence (Interview), and finally verify the controls operate effectively (Test). This addresses the CMMC requirement to control which personnel can perform maintenance activities to prevent unauthorized access to systems that process CUI.