How do cardholder data flow diagrams support scoping?
- A.They list all encryption keys and their custodians, directly proving that key management meets Requirements 3.6 and 3.7
- B.They identify all systems, networks, and processes that handle cardholder data, directly defining what is in scope
- C.They record all firewall rules and the business reason for each one, directly replacing the semiannual rule review under Requirement 1.2.7
- D.They document all employee access rights and approvals, directly satisfying the quarterly user account review requirement
Why B is correct
Data flow diagrams trace cardholder data through the environment, identifying every system that stores, processes, or transmits it, which directly defines the CDE scope.
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