Cyber AB Updated CMMC-CCA Exam Questions and Answers by azaan

If an OSC wishes to separate environments that process FCI from those that process CUI, they may pursue two separate CMMC certifications (Level 1 for FCI and Level 2 for CUI). A single certification cannot cover both environments unless all requirements for the higher level are met across the entire enterprise.

Exact Extracts:

CMMC Assessment Guide: “An OSC may choose to undergo multiple CMMC certification activities if they wish to limit scope between FCI and CUI environments.”

“Level 1 applies to safeguarding FCI, while Level 2 applies to CUI; separate certifications may be pursued if the OSC chooses to segregate these environments.”

Why the other options are not correct:

A: A single certification would require all assets to meet Level 2 controls, which may not be the OSC’s intent.

C: Defining scope for FCI only aligns with Level 1, but this does not meet Level 2 certification requirements for CUI.

D: A self-assessment scope only applies to Level 1 assessments, not Level 2 third-party certification.

Applicable Requirement: SC.L2-3.13.7 — “Prevent split tunneling for remote devices connecting to organizational systems.”

Assessment Method: “Examine” requires direct review of system hardware, software, and architecture to verify split tunneling is disabled.

Why C is Correct: This aligns with the NIST SP 800-171A assessment objective, which specifies verifying that mechanisms enforcing the prevention of split tunneling are implemented at the system level.

Why Other Options Are Insufficient:

A: Describes “test” method, not “examine.”

B: Describes “interview” method, not “examine.”

D: Too general and vague; does not align to evidence required under “examine.”

References (CCA Official Sources):

NIST SP 800-171 Rev. 2 — SC.L2-3.13.7

NIST SP 800-171A — SC.L2-3.13.7 (Assessment Objectives & Examine Method)

CMMC Assessment Guide – Level 2, SC.L2-3.13.7

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CMMC Level 2 requires that network access to CUI systems be restricted to authorized users and devices. A guest network without password protection that connects directly into the LAN violates AC.L2-3.1.3 (Access Enforcement) and SC.L2-3.13.16 (Cryptographic protection) because unauthorized users may access OSC systems and CUI indirectly.

Exact Extracts:

AC.L2-3.1.3: “Control the flow of CUI by enforcing access restrictions.”

SC.L2-3.13.16: “Employ cryptographic mechanisms to protect confidentiality of CUI during transmission.”

Assessment Guide: “Guest wireless networks must be segmented and controlled to prevent unauthorized access to internal networks containing CUI.”

Why other options are not correct:

A: Additional assessment is irrelevant — issue is failure to meet requirements.

C/D: False — requirements clearly exist, and the OSC’s current setup fails them.

The test assessment method means the assessor actively exercises or stimulates the system (or object) under defined conditions to compare actual results with expected behavior. This goes beyond review or observation and involves hands-on validation.

Exact Extracts:

NIST SP 800-171A: “The test method is the process of exercising assessment objects under specified conditions to compare actual with expected behavior.”

CMMC Assessment Guide: “Testing requires assessors to observe the execution of functions, mechanisms, or activities to confirm effectiveness.”

Why the other options are not correct:

A: This defines Examine (not Test).

B: This aligns with Interview or compliance review, not Test.

D: This is a generic definition but does not capture the essence of Test (direct execution under conditions).