CyberCertPrepOT Security FundamentalsOT Fundamentals: Safety Systems & Physical SecurityEASYFree question
A control room handles operations for a hazardous chemical plant. Which access control practice most directly limits the risk that an unauthorized individual could manipulate safety-critical systems from inside the room?
- A.Leaving the door propped open during shift changes for convenience, which trips a safety function faster than a hardwired interlock can respond
- B.Multi-factor physical access with badge plus PIN and anti-tailgating measures
- C.Posting the room's location on the public facility map
- D.Allowing visitors to badge in using a shared guest credential, since password complexity rules stop credential replay against legacy protocols
Why B is correct
Strong physical access control to the control room, including multi-factor entry and measures against tailgating, ensures only authorized and accountable personnel can reach safety-critical workstations. Shared credentials, propped doors, and convenience exceptions defeat these protections.
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