Under CMMC 2.0 Level 2, which aligns with the requirements of NIST SP 800-171, maintaining robust control over nonlocal maintenance sessions is critical. While multifactor authentication (MFA) is a required safeguard for secure access, additional measures must be implemented to fully meet the maintenance requirements as outlined in Control 3.3.5:

Key Requirements for Nonlocal Maintenance:

Termination of Nonlocal Maintenance Sessions:

To reduce the attack surface and prevent unauthorized access, nonlocal maintenance connections must be terminated immediately after the maintenance activity is completed. This is a direct requirement to mitigate risks associated with lingering remote sessions that could be exploited by threat actors.

Supporting Reference: NIST SP 800-171, Control 3.3.5 states: " Ensure that remote maintenance is conducted in a controlled manner and disable connections immediately after use. "

Multifactor Authentication (MFA):

OSCs are required to implement MFA for nonlocal remote maintenance sessions. MFA must include at least two factors (e.g., something you know, something you have, or something you are).

While the OSC’s use of MFA satisfies part of the requirement, it does not complete the control unless proper termination procedures are in place.

Policy and Procedure Adherence:

The OSC must also document a maintenance policy and ensure it reflects the need for terminating connections post-maintenance. The policy should outline roles, responsibilities, and steps for ensuring secure nonlocal maintenance practices.

Incorrect Options:

B. Unlimited connections: Allowing unrestricted nonlocal maintenance sessions is a significant security risk and violates the principle of least privilege.

C. Removing restrictions: Removing restrictions for convenience directly undermines compliance and security.

D. Multifactor authentication details: While MFA is necessary, the question states the OSC already uses it. Termination of sessions is the missing requirement.

Conclusion:

The requirement to terminate nonlocal maintenance sessions after maintenance is complete (Option A) is critical for compliance with CMMC 2.0 Level 2 and NIST SP 800-171, Control 3.3.5. This ensures that nonlocal maintenance activities are secured against unauthorized access and potential vulnerabilities.

Under DFARS and CMMC requirements, the prime contractor is responsible for ensuring its subcontractors meet the required CMMC level. Neither the DoD, The Cyber AB, nor OUSD A & S directly manages subcontractor certification.

Supporting Extracts from Official Content:

DFARS 252.204-7021: “The contractor shall ensure that its subcontractors have the appropriate CMMC level certification for the information they will handle.”

Why Option D is Correct:

Compliance responsibility flows through the contractor supply chain.

CMMC-AB (The Cyber AB) accredits assessors but does not police subcontractors.

OUSD A & S sets policy, not enforcement at contract level.

DoD agencies only require compliance at award/contract oversight level.

References (Official CMMC v2.0 Content):

DFARS 252.204-7021.

CMMC Model v2.0 governance guidance.

===========

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.

Step 1: Review CMMC 2.0 Reforms (Level 1 – Foundational)

As part ofCMMC 2.0, the DoD announced changes toreduce burden and costsfor companies that only handleFederal Contract Information (FCI):

DoD Statement (CMMC 2.0 Overview):

“Level 1 (Foundational) will only require an annual self-assessment, affirming implementation of the 17 FAR 52.204-21 controls.”

✅Step 2: Intent of “Reduced Assessment Costs”

The move to allowself-assessments at Level 1was explicitly designed toeliminate the costof hiring third-party assessors for organizations that only handle FCI.

Level 1 self-assessments are:

Conductedinternally by the OSC,

Affirmed annuallyby a senior company official,

Submitted via SPRS(Supplier Performance Risk System).

❌Why the Other Options Are Incorrect

B. Opt out of CMMC Assessments

✘Incorrect. Organizations must still perform aself-assessmentannually — they cannot opt out entirely.

C. Have assessment costs reimbursed by the DoD

✘No such reimbursement mechanism exists.

D. Pay no more than $500.00…

✘No such fixed cost is set or guaranteed in CMMC documentation.

UnderCMMC 2.0, all companies atLevel 1 (Foundational)are permitted toconduct self-assessmentsannually to demonstrate compliance, supporting the DoD’s goal ofreducing assessment costsfor low-risk contractors.

Understanding IA.L1-3.5.1 (Identification and Authentication Requirements)

TheCMMC 2.0 Level 1practiceIA.L1-3.5.1aligns withNIST SP 800-171, Requirement 3.5.1, which mandates that organizationsidentify system users, processes acting on behalf of users, and devicesto ensure proper access control.

To comply with this requirement, anOrganization Seeking Certification (OSC)must maintain documentation that demonstrates:

A unique identifier (username) for each system user

Mapping of system accounts to specific individuals

Identification of devices and automated processes that access systems

Why " C. User names associated with system accounts assigned to those individuals " is Correct?

This documentation directly satisfies IA.L1-3.5.1because it showshow system users are uniquely identified and linked to specific accountswithin the environment.

Alist of users and their assigned accountsconfirms that the organization has a structured method oftracking access and authentication.

It allows auditors to verify thateach user has a distinct identityand that access control mechanisms are properly applied.

Why Other Answers Are Incorrect?

A. Procedures for implementing access control lists (Incorrect)

While access control lists (ACLs) are relevant for authorization, they do notidentify users or devicesspecifically, making them insufficient as primary evidence for IA.L1-3.5.1.

B. List of unauthorized users that identifies their identities and roles (Incorrect)

Identifying unauthorized users does not fulfill the requirement of trackingauthorizedusers, devices, and processes.

D. Physical access policy stating " All non-employees must wear a special visitor pass or be escorted " (Incorrect)

This pertains tophysical security, not system-baseduser identification and authentication.

Conclusion

The correct answer isC. User names associated with system accounts assigned to those individuals, as thisdirectly satisfies the identification requirement of IA.L1-3.5.1.

1. Understanding CMMC 2.0 Levels and CUI Handling Requirements

UnderCMMC 2.0, contractors handlingControlled Unclassified Information (CUI)must meet aminimumcertification level to be eligible for contract awards involving CUI.

CMMC 2.0 Levels:

Level 1 (Foundational) – 17 Practices

Covers onlyFederal Contract Information (FCI)security.

Does NOT meet CUI handling requirements.

Level 2 (Advanced) – 110 Practices✅

REQUIRED for handling CUI.

Aligns withNIST SP 800-171, which establishes security controls for protecting CUI.

Contractorsmust achieve Level 2for contracts requiring CUI protection.

Level 3 (Expert) – 110+ Practices

Required for contracts involvinghigh-value CUIandcritical national security information.

Includesadditionalprotections fromNIST SP 800-172.

2. Official CMMC 2.0 References Confirming Level 2 for CUI

TheCMMC 2.0 Model Overviewclearly states that Level 2 is required for contractorshandling CUI.

DFARS 252.204-7012mandates that contractors protecting CUI must implementNIST SP 800-171, which is thefoundation of CMMC Level 2.

TheDoD’s CMMC Assessment Guidefor Level 2 specifies thatorganizations handling CUI must demonstrate full implementation of 110 practices from NIST SP 800-171to qualify for contract awards.

3. Why the Other Options Are Incorrect

A. Level 1❌

Only covers FCI, not CUI.

Does notmeet DoD requirements for protectingCUI.

C. Level 3❌

While Level 3 offersadditional protectionsfor high-risk CUI, it isnot the minimumrequirement.

Level 2 is the minimumneeded to handle CUI.

D. Any level❌

OnlyLevel 2 and higherare eligible for contracts requiring CUI protection.

Level 1 doesnotmeet CUI security standards.

Understanding Scoping in CMMC Level 1 Self-Assessments

Federal Contract Information (FCI)is any informationnot intended for public releasethat is provided or generated under aU.S. Government contracttodevelop or deliver a product or service.

Enhanced Security Personnel (ESP)refers to employees, contractors, or third parties whohave access to FCIwithin anOrganization Seeking Certification (OSC).

UnderCMMC 2.0 Scoping Guidance, anypersonnel, system, or asset with access to FCI is considered in scopefor a CMMC Level 1 assessment.

Why Option A (In scope) is Correct

Since theESP employee has access to FCI, theymustbe included in the assessment scope.

Option B (Out of scope)is incorrect because anyone with access to FCI is automatically considered part of theCMMC Level 1 boundary.

Option C (OSC point of contact)is incorrect because thepoint of contactis typically an administrative or compliance representative, not necessarily someone with FCI access.

Option D (Assessment Team Member)is incorrect because anESP employee is not part of the assessment team but rather a subject of the assessment.

Official CMMC Documentation References

CMMC Level 1 Scoping Guide, Section 2 – Defining Scope for FCI

CMMC Assessment Process (CAP) Guide – Roles and Responsibilities

Federal Acquisition Regulation (FAR) 52.204-21(Basic Safeguarding of FCI)

Final Verification

Since theESP employee has access to FCI, they are consideredin scopefor the CMMC Level 1 self-assessment, makingOption A the correct answer.

According to the CMMC Scoping Guidance, Level 2, assets are categorized into specific groups to determine how they are treated during an assessment. One of these categories is Specialized Assets.

The CMMC Scoping Guidance defines Specialized Assets as a specific group that includes:

Government Property: Any property owned or leased by the government and provided to the contractor (Government Furnished Equipment or GFE).

Internet of Things (IoT): Physical objects that are embedded with sensors, software, and other technologies for the purpose of connecting and exchanging data.

Operational Technology (OT): Programmable systems or devices that interact with the physical environment (e.g., Industrial Control Systems).

Restricted Information Systems: Systems that have specific configurations or constraints that prevent standard security controls from being applied (e.g., legacy systems).

Test Equipment: Specialized equipment used for testing, such as oscilloscopes or signal generators.

Why other options are incorrect:

Option A (SOCs): A Security Operations Center is typically considered a Security Protection Asset (SPA) because it provides security functions (monitoring/response) for the assessment scope.

Option B (Hosted VPN services): These are generally categorized as External Service Providers (ESPs) or part of the Security Protection Assets, depending on how they are managed and their role in protecting CUI.

Option C (Consultants): These are External Service Providers (ESP) (personnel/organizations), not specialized hardware/software assets.

Treatment of Specialized Assets: Under CMMC Level 2 scoping rules, Specialized Assets must be identified in the Asset Inventory and documented in the System Security Plan (SSP), but they are generally not managed against the CMMC practices unless they process, store, or transmit CUI in a way that falls outside their specialized function.

Reference Documents:

CMMC Scoping Guidance, Level 2 (Version 2.0/2.1): Section 3.1, " Specialized Assets " and Table 3.

32 CFR Part 170 (CMMC Program Rule): Definitions of asset categories and their associated assessment requirements.

Understanding Federal Contract Information (FCI)

Federal Contract Information (FCI) is defined by48 CFR 52.204-21(Basic Safeguarding of Covered Contractor Information Systems). FCI refers to information that:

Is NOT intended for public release.

Is provided by or generated for the government under a contract.

Is necessary to develop or deliver a product or service to the government.

Excludes publicly available government information(such as information on public websites).

Excludes simple transactional information(e.g., necessary to process payments).

In the context ofCMMC 2.0, organizations thatprocess, store, or transmit FCImust meetCMMC Level 1 (Foundational), which requires implementing17 basic safeguarding practicesoutlined inFAR 52.204-21.

Why is the Correct Answer FCI (D)?

A. CDI (Controlled Defense Information)→ Incorrect

This term was used inDFARS 252.204-7012but has been replaced byCUI (Controlled Unclassified Information)in CMMC discussions.

B. CTI (Cyber Threat Intelligence)→ Incorrect

This refers to intelligence on cyber threats, tactics, and indicators, not contractual data.

C. CUI (Controlled Unclassified Information)→ Incorrect

CUI is sensitive information requiring additional safeguarding but is a separate category from FCI.

D. FCI (Federal Contract Information)→Correct

The definition of FCI explicitly matches the description given in the question.

CMMC 2.0 References Supporting this Answer:

FAR 52.204-21 (Basic Safeguarding of Covered Contractor Information Systems)

Defines FCI and the required safeguards.

Establishes17 cybersecurity practicesfor FCI protection.

CMMC 2.0 Framework

Level 1 (Foundational)is required for contractors handlingFCI.

Ensures compliance withbasic safeguarding requirementsoutlined inFAR 52.204-21.

NIST SP 800-171 and DFARS 252.204-7012

FCI doesnotrequire compliance withNIST SP 800-171, butCUI does.

Understanding CMMC 2.0 Incident Response Practices

TheIncident Response (IR) domaininCMMC 2.0 Level 2aligns withNIST SP 800-171, Section 3.6, which defines requirements forestablishing and maintaining an incident response capability.

Why " A. IR.L2-3.6.1: Incident Handling " is Correct?

The documentation provideddescribes an incident response capability that includes preparation, detection, analysis, containment, recovery, and user response activities.

IR.L2-3.6.1specifically requires organizations toestablish an incident handling processcovering:

Preparation

Detection & Analysis

Containment

Eradication & Recovery

Post-Incident Response

Why Other Answers Are Incorrect?

B. IR.L2-3.6.2: Incident Reporting (Incorrect)

Incident reporting focuses on reporting incidents to external parties (e.g., DoD, DIBNet),which isnot what the provided documentation describes.

C. IR.L2-3.6.3: Incident Response Testing (Incorrect)

Incident response testing ensures that the response process is regularly tested and evaluated,which isnot the primary focus of the documentation provided.

D. IR.L2-3.6.4: Incident Spillage (Incorrect)

Incident spillage specifically refers to CUI exposure or handling unauthorized CUI incidents,which isnot the scenario described.

Conclusion

The correct answer isA. IR.L2-3.6.1: Incident Handling, as the documentationattests to the establishment of an incident response capability.