LLMResponse MP.L2-3.8.4.b

To effectively assess whether "media containing Controlled Unclassified Information (CUI) is marked with distribution limitations" under your organization’s media marking practices, it's crucial to understand which evidence types are supported by different assessment objects and how to sequence these assessments.

Evidence Types Supported by Assessment Objects

1. **Examine:**

  - **Assessment Objectives:** System security plan; system media protection policy.
  - **Supported Evidence Type:**
    - **Documents (I2):** Policies, procedures, and plans can be reviewed to confirm the inclusion of distribution limitations as part of CUI marking requirements. These documents are direct outcomes that establish expected practices.

2. **Interview:**

  - **Assessment Objectives:** Personnel with system media protection and information security responsibilities.
  - **Supported Evidence Type:**
    - While interviews themselves do not produce artifacts, they can verify understanding and compliance among personnel regarding the distribution limitations marking policies.

3. **Test:**

  - **Assessment Objectives:** Organizational processes for marking CUI on media; mechanisms supporting or implementing media markings with distribution limitations.
  - **Supported Evidence Types:**
    - **Artifacts (I1):** Testing can generate samples of marked media that exhibit proper application of distribution limitation markings, serving as tangible evidence.
    - **Physical Review (I3):** Observing the marking process during tests provides direct evidence of compliance.

Prioritizing Assessment Approaches

To prioritize these approaches effectively:

1. **Examine:**

  - Start by examining relevant documents such as policies and security plans to ensure they explicitly require distribution limitations on media containing CUI. This foundational step establishes whether there is a documented policy that mandates the necessary markings.

2. **Test:**

  - Proceed with testing organizational processes, which involves evaluating if these documented requirements are actively applied in practice through sample reviews or physical inspections of marked media. Testing validates actual compliance beyond theoretical frameworks.
  

3. **Interview:**

  - Conduct interviews last to address any uncertainties uncovered during document examination and testing phases. This helps gain insights into personnel understanding, practical challenges, and potential discrepancies between policy and practice.

By following this structured approach—beginning with the review of documentation for established requirements, followed by verifying actual implementation through tests, and finally clarifying details via interviews—you ensure a comprehensive assessment that effectively evaluates whether distribution limitations are consistently applied to media containing CUI.