Which of the following representations shows the entire system as a single process?
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Control flow diagram
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Context diagram
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Level 1 DFD
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Activity diagram
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State diagram
B
Correct answer
Explanation
The context-level data flow diagram shows the interaction between the system and external agents which act as data sources and data sinks. On the context diagram the system's interactions with the outside world are modelled purely in terms of data flows across the system boundary. The context diagram shows the entire system as a single process, and gives no clues as to its internal organization.