CyberCertPrepOT Security FundamentalsOT Fundamentals: Securing Industrial Control SystemsMEDIUMFree question
A passive sensor watches OPC UA sessions that are signed and encrypted. What can the sensor still collect?
- A.Method call arguments written to the server
- B.Endpoint addresses plus session timing metadata
- C.Node values read by each connected client
- D.The address-space tree of the server
Why B is correct
Encryption hides payload content such as node values and method arguments, but IP addresses ports and timing remain visible on the wire. That metadata still supports inventory and baselining.
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