Gelinas-Dull_8e_TB_Chapter_04

Gelinas-Dull_8e_TB_Chapter_04 - Chapter 4Documenting...

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Chapter 4—Documenting Information Systems TRUE/FALSE 1. Flowcharts are commonly used in financial audits, business process reengineering and security review engagements. ANS: T 2. Data flow diagrams portray a business processes’ activities, stores of data, and flows of data among those elements. ANS: T 3. Data flow diagrams present a comprehensive picture of the management, operations, information sys- tems and process controls embodied in business processes. ANS: F 4. A data flow diagram is a graphical representation of a system, which depicts the system’s components, data flows and the sources, destinations and storage of data. ANS: T 5. System flowcharts use only four symbols. ANS: F 6. Systems documentation is used to understand, explain, evaluate, and improve complex business pro- cesses, information systems, and internal controls. ANS: T 7. In a data flow diagram, a bubble symbol shown below depicts an entity or a process within which in- coming data flows are transformed into outgoing data flows. ANS: T 8. The advantage of a physical data flow diagram versus a logical data flow diagram is that we can con- centrate on what activities a system is performing without having to specify how, where or by whom. . ANS: F 9. In a data flow diagram, a square represents an internal entity.
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ANS: F 10. In a data flow diagram, two parallel lines represent the data store symbol. ANS: T 11. The following symbol represents general purpose input-output. ANS: F 12. The following symbol represents a computer process. ANS: T 13. The following symbol represents a manual process ANS: T 14. The following symbol represents a disk
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ANS: F 15. The following symbol represents a paper file. ANS: T 16. The following symbol represents a document. ANS: F 17. In a data flow diagram, an external entity symbol portrays a source or a destination of data outside the system. ANS: T 18. A context diagram is a top-level diagram of a system that depicts the system and all its activities as a single bubble. ANS: T 19. Internal entities are those entities inside the system that send data to, or receive data from, the system. ANS: F 20. Internal entities are those persons, places, or things outside our system that send data to, or receive data from, our system. ANS: F 21. An external entity is a person, place, or thing within the system that transforms data. ANS: F 22. A physical data flow diagram uses bubbles to specify where, how, and by whom a system's processes are accomplished. ANS: T 23. When the context diagram and the level 0 diagram have equivalent external data flows, the DFDs are said to be balanced.
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ANS: T 24. The successive subdivision, or exploding, of logical data flow diagrams is called bottom up partition- ing. ANS: F
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This note was uploaded on 09/26/2011 for the course BA 101 taught by Professor Jackson during the Summer '06 term at University of Nevada, Las Vegas.

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Gelinas-Dull_8e_TB_Chapter_04 - Chapter 4Documenting...

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