Cyber AB CMMC CMMC-CCP Question # 60 Topic 7 Discussion

Understanding Multi-Function Device (MFD) Security in CMMCMulti-function devices (MFDs), such asscanners, printers, and copiers,process, store, and transmit FCI, making them apotential attack surfacefor unauthorized access.

Thebest technical controlto limit MFD access to only authorized systems isVirtual LAN (VLAN) restrictions, whichsegment and isolate network traffic.

VLAN Restrictions Provide Network Segmentation

VLANsisolate the MFDfrom unauthorized systems, ensuringonly approved devicescan communicate with it.

Prevents unauthorized network access bylimiting connectionsto specific IPs or subnets.

Meets CMMC 2.0 Network Security Controls

Aligns withCMMC System and Communications Protection (SC) Practicesfor network segmentation and access control.

Reducesthe risk of unauthorized access to scanned and printed FCI.

B. Single administrative account→Incorrect

Asingle admin accountdoes not restrict accessbetween devices, only controlswho can configurethe MFD.

C. Documentation showing MFD configuration→Incorrect

Documentation helps with compliance butdoes not actively restrict access.

D. Access lists only known to the IT administrator→Incorrect

Access lists should besystem-enforced, not just "known" to the administrator.

CMMC Practice SC.3.192 (Network Segmentation)– Requires restricting access usingnetwork segmentation techniques such as VLANs.

NIST SP 800-171 (SC Family)– Supportsisolation of sensitive devicesusing VLANs and other segmentation controls.

Why the Correct Answer is "A. Virtual LAN (VLAN) Restrictions"?Why Not the Other Options?Relevant CMMC 2.0 References:Final Justification:SinceVirtual LAN (VLAN) restrictions enforce access control at the network level, the correct answer isA. Virtual LAN (VLAN) restrictions.