CMMC-CCA Exam Dumps : Certified CMMC Assessor (CCA) Exam

The requirement for CA.L2-3.12.3 – Security Control Monitoring mandates monitoring to be performed on an ongoing basis to ensure the continued effectiveness of the controls. This is not satisfied by a yearly review alone.

CA.L2-3.12.3 Security Control Monitoring – Monitor security controls on an ongoing basis to ensure the continued effectiveness of the controls.

The OSC’s statement in their SSP that monitoring occurs on a one-year periodic basis fails to meet this requirement, because the term "ongoing basis" implies continual or recurring monitoring activities that occur throughout the system’s lifecycle—not a single annual review.

Therefore, the assessor must determine that the OSC’s implementation is not acceptable.

CMMC requires physical access to systems containing or transmitting CUI to be limited to authorized individuals and for access records to be maintained. Badge readers with unique identification provide individual accountability, access control enforcement, and auditable access logs, which are stronger than labels, cameras, or keypads.

Exact Extracts:

PE.L2-3.10.1: “Limit physical access to organizational systems, equipment, and the respective operating environments to authorized individuals.”

PE.L2-3.10.5: “Maintain audit logs of physical access.”

CMMC Assessment Guide: “Badge systems with access control lists and logs are considered a best method for meeting physical access requirements.”

Why the other options are not correct:

A: Labels and lists do not prevent unauthorized access.

C: Cameras monitor but do not restrict access; they are detective, not preventive.

D: Keypads do not provide individual accountability (codes can be shared).

The control SC.L2-3.13.5: Boundary Protection requires that organizations monitor and control communications at the external boundary and at key internal boundaries. The CMMC Assessment Guide states that assessors should examine boundary protection procedures to verify logging, monitoring, and alerting are defined and implemented. Physical access logs, account management documents, and configuration management policies do not provide details of how network boundaries are monitored and protected.

Exact extracts:

“Assessment Objectives … Determine if: • external boundary and key internal boundaries are defined; • communications are monitored and controlled at boundaries; • traffic is checked for unauthorized transfer of information; and • boundary protection devices are configured and managed.”

“Potential Assessment Methods: Examine … boundary protection policy; boundary protection procedures; system security plan; configuration settings for boundary protection devices; logs of boundary protection devices.”

Why the other options are incorrect:

A (Physical access logs): Relates to facility entry, not network boundary protection.

C (Account management document): Addresses user account lifecycle, not firewall and traffic control.

D (Configuration management policy): Governs system changes, not firewall logging/alerting controls.

References (CCA documents / Study Guide):

CMMC Assessment Guide – Level 2, SC.L2-3.13.5 “Boundary Protection.”

NIST SP 800-171 Rev. 2, 3.13.5.

===========