Which DFD symbol represents data output from sensing, actuating, traffic forwarding, analysis, and control systems?

IT Questions BankCategory: IoT SecurityWhich DFD symbol represents data output from sensing, actuating, traffic forwarding, analysis, and control systems?

Which DFD symbol represents data output from sensing, actuating, traffic forwarding, analysis, and control systems?

  • external entity
  • data flow
  • data store
  • process

Explanation: DFDs use a series of four symbols:
External entity – users, contractors, and partners outside of the control of the system that send or receive data
Process – data output from sensing, actuating, traffic forwarding, analysis, and control systems
Data store – data at rest in local, fog, cloud, or data center storage
Data flow – single headed arrows that indicate uni-directional data flow; double headed arrows that indicate bi-directional data flow

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