LLMResponse MA.L2-3.7.2.a

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

Ranking Evidence Types for Assessment Objective [a]

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

1. **Artifacts** - Most valuable because they demonstrate actual implementation through:

  - Approved tool lists and inventories
  - Access control records for maintenance tools
  - Audit logs showing controlled tool usage
  - Tool approval documentation

2. **Documents** - Second most valuable because they establish the framework:

  - System maintenance policy 
  - Procedures for managing maintenance tools
  - Tool approval processes
  - Access control documentation

3. **Screen Share** - Third most valuable as it demonstrates:

  - Real-time verification of access controls for maintenance tools
  - How tools are accessed and controlled in practice
  - Implementation of approval/monitoring processes

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

  - Physical observation of secure storage for maintenance tools
  - Physical access controls to maintenance tools
  - Physical security measures for tool storage

Prioritizing Assessment Approaches

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

1. **Examine** - Highest priority because it provides foundational evidence:

  - Review maintenance policies and procedures
  - Examine tool inventories and approved tool lists
  - Review access control documentation
  - Examine tool approval workflows and evidence of implementation

2. **Test** - Second priority to verify controls are functioning:

  - Test access controls for maintenance tools
  - Verify tool approval processes work as documented
  - Test monitoring mechanisms for tool usage
  - Verify tools are scanned for malicious code before use

3. **Interview** - Third priority to validate understanding and fill gaps:

  - Interview maintenance personnel about tool controls
  - Verify IT security personnel understand tool control requirements
  - Confirm knowledge of access limitations and approval processes

By following this approach, you'll gather comprehensive evidence that maintenance tools are properly controlled through documented processes (Examine), functional controls (Test), and personnel awareness (Interview). This aligns with the CMMC requirement to ensure maintenance tools don't introduce vulnerabilities into systems that process CUI.

Would you like me to elaborate on specific types of evidence you should collect for any of these approaches?