Cyber AB CMMC-CCA Exam With Confidence Using Practice Dumps

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 OSC is responsible for identifying and declaring where CUI is processed, stored, or transmitted. A Certified CMMC Assessor (CCA) may verify boundaries, examine evidence, and confirm monitoring or control practices, but cannot independently determine if a physically separated asset contains CUI. That determination is the responsibility of the OSC, not the assessor.

Exact extracts:

“The OSC is responsible for identifying CUI assets.”

“Assessors verify and validate the OSC’s identification, but do not independently declare or determine the presence of CUI.”

“Assessors are permitted to examine boundary protections, monitoring mechanisms, and internal boundary controls.”

Why the other options are allowed:

A: Assessors are required to verify internal system boundaries.

C: Assessors must confirm that external system boundaries are clearly defined.

D: Assessors must examine evidence of communication monitoring.

References (CCA documents / Study Guide):

CMMC Assessment Guide – Level 2, Assessor Roles and Responsibilities.

CMMC Code of Professional Conduct (OSC retains CUI ownership; assessors validate but cannot declare CUI).

The CMMC Assessment Process (CAP) requires that results be reported at the OSC level. While findings may be gathered from enclaves or units, the final reporting must be aggregated and scored across the entire OSC assessment boundary.

Extract:

“Final recommended assessment results must be consolidated and reported at the OSC level, regardless of assessment locations or enclaves.”

Thus, the Lead Assessor must ensure aggregation to the OSC level.