AC.L2-3.10.2[b] — Physical Protection (Physical Access Monitoring)Domain: Physical Protection (PE) | Practice: PE.L2-3.10.2 | Objective ID: 3.10.2[b] | Source: NIST SP 800-171 Rev. 2 / CMMC 2.0 Level 2 | Assessment Objective: Physical access monitoring equipment is maintained. |
CMMC objective AC.L2-3.10.2[b] sits inside the Physical Protection domain (PE.L2-3.10.2 — Physical Access Monitoring) and reads: Physical access monitoring equipment is maintained. Maintain cameras, sensors, alarms, and other physical monitoring equipment in working order. Non-functional monitoring equipment creates blind spots in physical security. For organizations that handle Controlled Unclassified Information (CUI), this objective is part of the foundation that every downstream control depends on.