According to the CMMC Assessment Process (CAP) and the roles defined within the CMMC Ecosystem, the responsibility for the final determination of assessment findings rests with the C3PAO (Certified Third-Party Assessment Organization).
While the Assessment Team (Lead Assessor and Assessor) performs the legwork-conducting interviews, examining documents, and testing mechanisms-the C3PAO is the legal entity contracted by the OSC (Organization Seeking Certification) to conduct the assessment and issue the recommendation for certification.
Role of the C3PAO: The C3PAO provides the quality assurance and oversight. Once the Assessment Team completes the draft findings, the C3PAO performs a quality or " peer " review to ensure the findings are consistent with CMMC requirements. They hold the final authority over the Recommended Finding (Met, Not Met, or N/A) before it is uploaded to the eMASS (Enterprise Mission Assurance Support Service) or the designated DoD database.
Role of the Cyber AB (formerly CMMC-AB): The Board provides the accreditation for the C3PAOs and manages the ecosystem, but they do not participate in individual assessments or overrule specific technical findings of an assessment unless there is a formal appeal or ethics complaint.
Role of the Assessment Team Members: They collect evidence and make initial determinations, but their findings are subject to the C3PAO's internal quality management system (QMS) review.
Role of the OSC Sponsor: The OSC is the entity being assessed; they have no authority over the interpretation of findings, though they may provide additional evidence during the remediation period.
Reference Documents:
CMMC Assessment Process (CAP) v1.0: Section on " Phase 3: Conduct Assessment " and " Phase 4:
Reporting Results, " which details the C3PAO's responsibility for the final package.
C3PAO Authorization Requirements: Outlines the requirement for a quality management review of all assessment findings by the C3PAO before submission to the DoD.

CMMCLevel 1focuses onbasic cyber hygieneand includes17 practicesderived fromNIST SP 800-171 Rev.
2butonly covers the protection of Federal Contract Information (FCI)-not Controlled Unclassified Information (CUI).
UnlikeLevel 2, which aligns fully withNIST SP 800-171,Level 1 does not require third-party certificationand can beself-assessedby the organization.
Domains Covered in a Level 1 Self-Assessment
CMMC Level 1 practices fall underthree specific domains:
Access Control (AC)- Ensures that only authorized individuals can access FCI.
Physical Protection (PE)- Protects physical access to systems and facilities storing FCI.
Identification and Authentication (IA)- Verifies the identity of users accessing systems containing FCI.
These domains focus on foundational security controls necessary toprotect FCI from unauthorized access.
Official CMMC 2.0 Documentation References
CMMC Model v2.0states thatLevel 1 includes only 17 practicesmapped toNIST SP 800-171requirements specific toAccess Control (AC), Physical Protection (PE), and Identification and Authentication (IA).
CMMC Assessment Guide, Level 1confirms thatRisk Management (RM) and Media Protection (MP) are not included in Level 1, as they pertain to more advanced security measures needed for handlingCUI (Level 2).
Breakdown of Answer Choices
A). Access Control (AC), Risk Management (RM), and Media Protection (MP)# Incorrect.Risk Management (RM) and Media Protection (MP) are Level 2 domains.
B). Risk Management (RM), Access Control (AC), and Physical Protection (PE)# Incorrect.Risk Management (RM) is not part of Level 1.
C). Access Control (AC), Physical Protection (PE), and Identification and Authentication (IA)#Correct.These are thethree domains covered in CMMC Level 1 self-assessments.
D). Risk Management (RM), Media Protection (MP), and Identification and Authentication (IA)# Incorrect.
Risk Management (RM) and Media Protection (MP) are Level 2 domains.
Conclusion
Thecorrect answer is C. Access Control (AC), Physical Protection (PE), and Identification and Authentication (IA), as these are theonly three domains included in a CMMC Level 1 Self-Assessmentaccording toCMMC
2.0 documentation and NIST SP 800-171 mapping.
Reference Documents for Further Reading
CMMC 2.0 Model Overview - DoD Official Documentation
CMMC Assessment Guide, Level 1
NIST SP 800-171 Rev. 2 (Basic Security Requirements for FCI)

Understanding the Role of the DoD CIO Office in CMMC
TheDepartment of Defense (DoD) Chief Information Officer (CIO) officeis theprimary authorityresponsible for leading the direction, standards, and best practices of theCybersecurity Maturity Model Certification (CMMC)framework.
Why "B. DoD CIO Office" is Correct?
The DoD CIO Oversees CMMC Policy and Implementation
TheDoD CIO Office is responsible for the governance and strategic direction of CMMC.
It ensures thatCMMC aligns with DoD cybersecurity policies, such asDoD Instruction 5200.48 (Controlled Unclassified Information)andNIST SP 800-171.
CMMC Development and Evolution
TheDoD CIO played a critical role in launching CMMCto improve cybersecurity across theDefense Industrial Base (DIB).
The CIO office leadspolicy development and updates to the CMMC framework, including the transition fromCMMC 1.0 to CMMC 2.0.
Alignment of CMMC with Federal Cybersecurity Strategy
The DoD CIO ensures that CMMCintegrates with federal cybersecurity policiesandNIST frameworks.
It provides oversight formapping CMMC Levels (1-2-3) to existing cybersecurity standards and controls.
Why Other Answers Are Incorrect?
A). NIST (Incorrect)
TheNational Institute of Standards and Technology (NIST)provides thetechnical framework (NIST SP 800-
171, SP 800-172), butNIST does not lead the CMMC program.
C). Federal CIO Office (Incorrect)
TheFederal CIO focuses on broader government IT policiesandnot specifically on DoD cybersecurity requirementslike CMMC.
D). Defense Federal Acquisition Regulation Council (Incorrect)
TheDFARS Counciloverseescontracting regulationsrelated to CMMC (e.g.,DFARS 252.204-7012, 7019,
7020, 7021), but it doesnot lead CMMC standards and best practices.
Conclusion
The correct answer isB. DoD CIO Office, as it isthe lead authority guiding the CMMC framework, standards, and implementation across the Defense Industrial Base (DIB).
References:
DoD CIO Website on CMMC
CMMC 2.0 Overview by DoD
DoD Instruction 5200.48 (CUI Program)
DFARS 252.204-7012 & CMMC 2.0 Policy Documents

Understanding the CMMC Level 2 Assessment Process
When anOrganization Seeking Certification (OSC)engages aCertified Third-Party Assessment Organization (C3PAO)to conduct aCMMC Level 2 Assessment, anAssessment Planis developed to outline the scope, methodology, and logistics of the assessment.
Who Signs Off on the Assessment Plan?
According to theCMMC Assessment Process (CAP) Guide, theAssessment Plan must be formally agreed upon and signed off by:
Lead Assessor- The individual responsible for overseeing the execution of the assessment.
C3PAO (Certified Third-Party Assessment Organization)- The entity conducting the assessment.
Why "C. Lead Assessor and C3PAO" is Correct?
TheLead Assessorensures that theAssessment Plan aligns with CMMC-AB and DoD requirements, including methodology, objectives, and evidence collection.
TheC3PAOprovides organizational approval, confirming that the assessment is conducted according toCMMC-AB rules and contractual agreements.
Why Other Answers Are Incorrect?
A). OSC and Sponsor (Incorrect)
TheOSC (Organization Seeking Certification)is involved in planning but does not sign off on the plan.
Asponsoris not part of the sign-off process in CMMC assessments.
B). OSC and CMMC-AB (Incorrect)
TheOSCdoes not formally approve theAssessment Plan-this responsibility belongs to the assessment team.
TheCMMC-ABdoes not sign off on individualAssessment Plans.
D). C3PAO and Assessment Official (Incorrect)
"Assessment Official" isnot a defined rolein the CMMC assessment process.
TheC3PAOis involved, but it must be theLead Assessorwho signs off, not an unspecified official.
Conclusion
The correct answer isC. Lead Assessor and C3PAO.
TheLead Assessorensures assessment integrity, while theC3PAOprovides official authorization.
References:
CMMC Assessment Process (CAP) Guide
CMMC 2.0 Level 2 Certification Procedures
The Cyber AB Assessment Guidelines

In the CMMC assessment process, conflicts of interest must be identified early to ensure an impartial and objective evaluation of an organization's compliance with CMMC 2.0 requirements. The appropriate phase for identifying conflicts of interest is during the"Verify Readiness to Conduct Assessment"phase.
Step-by-Step Explanation:
Assessment Planning & Conflict of Interest Consideration
Before an assessment begins, theC3PAO (Certified Third-Party Assessment Organization)or theDIBCAC (Defense Industrial Base Cybersecurity Assessment Center) for DOD-led assessmentsmust confirm that there are no conflicts of interest between assessors and the organization being assessed.
A conflict of interest may arise if an assessor haspreviously worked for, consulted with, or provided direct assistance tothe organization under review.
CMMC Assessment Process and Phases
The CMMC assessment process involves multiple steps, and the verification of readiness is acritical early phaseto ensure that the assessment is unbiased:
Analyze Requirements:This phase focuses on defining the assessment scope, but it does not include conflict of interest verification.
Develop Assessment Plan:This phase focuses on structuring the assessment methodology, not on identifying conflicts.
Verify Readiness to Conduct Assessment (Correct Answer):
At this stage, theC3PAO or assessment team must review potential conflicts of interest.
TheDefense Industrial Base Cybersecurity Assessment Center (DIBCAC)also ensures assessors do not have any prior relationships that could compromise the objectivity of the evaluation.
Generate Final Recommended Assessment Results:This phase occurs at the end of the process, after the assessment is complete, so conflict of interest identification is too late by this stage.
Official CMMC Documentation & References
CMMC Assessment Process (CAP) Guide- The CAP details procedures assessors must follow, including conflict of interest verification.
CMMC 2.0 Scoping and Assessment Guides- Published by the Cyber AB and DoD, these guides reinforce the need for impartiality and independence in assessments.
DoD Instruction 5200.48 (Controlled Unclassified Information Program)- Outlines requirements for ensuring objective cybersecurity assessments.
By ensuring conflicts of interest are identified in the"Verify Readiness to Conduct Assessment"phase, the integrity of the CMMC certification process is maintained, ensuring that assessments are conductedfairly, independently, and in accordance with DoD cybersecurity policies.