CMMC CMMC-CCP Updated Exam

In the context of a Cybersecurity Maturity Model Certification (CMMC) Level 2 Assessment, specific practices must be evaluated to ensure compliance with established security requirements. One such practice is AC.L2-3.1.19, which mandates the encryption of Controlled Unclassified Information (CUI) on mobile devices and mobile computing platforms.

Step-by-Step Explanation:

Requirement Overview:

Practice AC.L2-3.1.19 requires organizations to " Encrypt CUI on mobile devices and mobile computing platforms. " This ensures that any CUI accessed, stored, or transmitted via mobile devices is protected through encryption, mitigating risks associated with data breaches or unauthorized access.

Assessment of Provided Evidence:

During the assessment, the Organization Seeking Certification (OSC) provided an inventory list encompassing servers, workstations, and network devices. Notably, this list lacks any mention of mobile devices or mobile computing platforms.

Implications of the Omission:

The absence of mobile devices in the inventory suggests that the OSC may not have accounted for all assets that process, store, or transmit CUI. Without a comprehensive inventory that includes mobile devices, it ' s challenging to verify whether the OSC has implemented the necessary encryption measures for CUI on these platforms.

Assessment Determination:

Given the incomplete inventory, the evidence is insufficient to make a definitive scoring determination for practice AC.L2-3.1.19. The OSC must provide a detailed inventory that encompasses all relevant devices, including mobile devices and computing platforms, to demonstrate compliance with the encryption requirements for CUI.

The National Archives and Records Administration (NARA) serves as the authoritative body overseeing the Controlled Unclassified Information (CUI) program within the United States federal government. NARA maintains the CUI Registry, which is the definitive resource for all categories, subcategories, and associated markings of CUI. This registry provides comprehensive guidance on the identification and handling of CUI, ensuring standardized practices across federal agencies and their contractors.

The other options are delineated as follows:

CMMC-AB:The Cybersecurity Maturity Model Certification Accreditation Body is responsible for overseeing the CMMC program but does not manage CUI classifications.

DoD Contractors FAQ:While it may offer guidance to Department of Defense contractors, it is not an authoritative source for CUI data classifications.

OSC ' s privacy policies:An Organization Seeking Certification ' s internal policies pertain to its own data handling practices and are not authoritative for CUI classifications.

Therefore, for authoritative information on CUI data classifications, the NARA ' s CUI Registry is the appropriate resource.

Understanding the CMMC Level 2 Final Report Requirements

For aCMMC Level 2 Assessment, theFinal CMMC Assessment Results Reportmust include:

Assessment findings for each practice

Final ratings (MET or NOT MET) for each practice

A detailed rationale for each practice rated as NOT MET

Why " B. Documented rationale for each failed practice " is Correct?

The CMMC Assessment Process (CAP) Guidestates that if a practice is markedNOT MET, theassessors must provide a rationale explaining why it failed.

This rationale helps theOSC understand what needs remediationand, if applicable, whether the deficiency can be addressed via aPlan of Action & Milestones (POA & M).

TheFinal Report serves as an official recordand must be submitted as part of theresults package.

Why Other Answers Are Incorrect?

A. Affirmation for each practice or control (Incorrect)

While the report includes aMET/NOT MET ratingfor each practice,affirmation is not a required component.

C. Suggested improvements for each failed practice (Incorrect)

Assessors do not provide recommendations for improvement—they only document findings and rationale.

Providing suggestions would create aconflict of interestperCMMC-AB Code of Professional Conduct.

D. Gaps or deltas due to any reciprocity model are recorded as met (Incorrect)

If an organization isleveraging reciprocity (e.g., FedRAMP, Joint Surveillance Voluntary Assessments), gapsmust still be documented—not automatically marked as " MET. "

Conclusion

The correct answer isB. Documented rationale for each failed practice, as this is amandatory requirement in the Final CMMC Assessment Results Report.

Understanding FAR Clause 52.204-21

TheFederal Acquisition Regulation (FAR) Clause 52.204-21is titled " Basic Safeguarding of Covered Contractor Information Systems. " This clause establishesminimum cybersecurity requirementsforfederal contractorsthat handleFederal Contract Information (FCI).

Key Purpose of FAR Clause 52.204-21

Theprimary objectiveof FAR 52.204-21 is to ensure that contractors applybasic cybersecurity protectionsto theirinformation systemsthat process, store, or transmitFCI. Theseminimum safeguarding requirementsserve as abaseline security standardfor contractors doing business with theU.S. government.

Why " Minimum Standard of Care " is Correct?

FAR 52.204-21 doesnotrequire contractors to install specific cybersecurity tools (eliminating option A).

Itoutlines only the minimum safeguards, notallcybersecurity controls needed for complete security (eliminating option B).

CMMC certification isnotmandated by this clause alone (eliminating option D).

Instead, it establishesa baseline " standard of care " that all federal contractorsmust followto protectFCI(making option C correct).

Breakdown of Answer Choices

Option

Description

Correct?

A. It directs all covered contractors to install the cybersecurity systems listed in that clause.

❌Incorrect–The clause doesnotspecify tools or require specific cybersecurity systems.

B. It describes all of the safeguards that contractors must take to secure covered contractor IS.

❌Incorrect–It only setsminimumrequirements, notall possiblesecurity measures.

C. It describes the minimum standard of care that contractors must take to secure covered contractor IS.

✅Correct – The clause defines basic safeguards as a minimum security standard.

D. It directs covered contractors to obtain CMMC Certification at the level equal to the lowest requirement of their contracts.

❌Incorrect–FAR 52.204-21 doesnot mandateCMMC certification; that requirement comes from DFARS 252.204-7012 and 7021.

Minimum Safeguarding Requirements Under FAR 52.204-21

The clause defines15 basic security controls, which align withCMMC Level 1. Some examples include:

✅Access Control– Limit access to authorized users.

✅Identification & Authentication– Authenticate system users.

✅Media Protection– Sanitize media before disposal.

✅System & Communications Protection– Monitor and control network connections.

Official References from CMMC 2.0 and FAR Documentation

FAR 52.204-21– Establishes thebasic safeguarding requirementsfor FCI.

CMMC 2.0 Level 1– Directly aligns withFAR 52.204-21 controls.

Final Verification and Conclusion

The correct answer isC. It describes the minimum standard of care that contractors must take to secure covered contractor IS.This aligns withFAR 52.204-21 requirementsas abaseline security standard for FCI.