Comprehensive and Detailed In-Depth Explanation:
CMMC practice AU.L2-3.3.6 - Reduction & Reporting requires organizations to "provide audit reduction and report generation capabilities to support after-the-fact investigations without altering original records." The objectives are: [a] reducing audit records by filtering non-essential data, and [b] generating reports for analysis. Splunk, a SIEM tool, is deployed, and the assessor must evaluate its alignment with these goals.
* Option C: Filter rules for reduction and analysis/reporting processes- This directly addresses the practice's core requirements: reducing logs (e.g., filtering noise) and generating meaningful reports (e.
g., anomaly detection, summaries). These features ensure Splunk meets AU.L2-3.3.6's intent, making it the key focus.
* Option A: RBAC for access restriction- Relevant to AU.L2-3.3.8 (Audit Protection), not reduction
/reporting; it's a security control, not a capability of this practice.
* Option B: Retention time- Pertains to AU.L2-3.3.2 (Audit Retention), not reduction/reporting functionality.
* Option D: Compliance dashboards- Useful but not required by AU.L2-3.3.6; the focus is on reduction and reporting, not real-time compliance visibility.
Why C?The CMMC guide specifies assessing tools for reduction (filtering) and reporting (analysis/report generation), and Splunk's effectiveness hinges on these features, per the scenario's SOC context.
Extract from Official CMMC Documentation:
* CMMC Assessment Guide Level 2 (v2.0), AU.L2-3.3.6: "Examine tools for capabilities to [a] reduce audit records by filtering non-essential data, and [b] generate reports identifying anomalies and summarizing data."
* NIST SP 800-171A, 3.3.6: "Assess reduction and reporting functions, such as filtering and customized report generation." Resources:
* https://dodcio.defense.gov/Portals/0/Documents/CMMC/AG_Level2_MasterV2.
0_FINAL_202112016_508.pdf

Comprehensive and Detailed in Depth Explanation:
The CoPC grants Cyber AB final authority over corrective actions, though Industry Working Groups may decide in some cases. Options A, C, and D lack this authority.
Extract from Official Document (CoPC):
* Paragraph 4.1(4)(a) - Violation Resolution (pg. 10):"The CMMC Accreditation Body has sole authority to determine corrective action." References:
CMMC Code of Professional Conduct, Paragraph 4.1(4)(a).

Comprehensive and Detailed in Depth Explanation:
Practices in the Limited Practice Deficiency Correction Program are scored 'Not Met' per CAP, as they are incomplete, not partially met (Option B), inapplicable (Option C), or met (Option D). Option A is correct.
Extract from Official Document (CAP v1.0):
* Section 2.3.2 - Deficiency Correction (pg. 28):"All practices tracked under the Limited Practice Deficiency Correction Program will be scored as 'NOT MET.'" References:
CMMC Assessment Process (CAP) v1.0, Section 2.3.2.

The CAP and Scoping Guidance specify that the assessor must review both:
* The contract - to confirm that the OSC's CMMC requirements are flowed down to the ESP, and
* The Shared Responsibility Matrix - to confirm responsibilities are clearly assigned between OSC and ESP.
Extract:
"Assessors must review contracts and shared responsibility matrices to ensure that OSC responsibilities and provider responsibilities are clearly defined, and that requirements are flowed down appropriately." Thus, option A is the most complete.
Reference: CMMC Scoping Guidance - External Service Providers; CAP.

The CMMC Assessment Process (CAP), Phase 2 - Conduct the Assessment defines the subphases for generating final recommended results. The steps are:
* Determine final practice MET/NOT MET/NA results
* Create, finalize, and record recommended final findings
* Resolve assessment findings disputes
Extract:
"The assessment team determines the final practice status, records recommended findings, and resolves disputes with the OSC prior to finalizing recommended results." Reference: CMMC Assessment Process (CAP), Phase 2 - Final Recommended Assessment Results.