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26. Which of the following is not a part of a Data Flow Diagram?
A. disk storage
B. arrow
C. Datastore
D. process represented by a bubble circle (circle)
E. None of the above
27. The first step to the system study project is to
A. define system performance criteria
B. describe information needs
C. staff for the study project
D. announce the study project
E. None of the above
28. The data stored on a tape or disk file may be recorded in a report form described as
A. a soft copy ledger
B. printer spacing from
C. proof listing
D. All of the above
E. None of the above
29. In Data structure, the main characteristic of “ring” is :
A. last, record points to the first record
B. first record points only to the last record
C. many records point to one record
D. All of the above
E. None of the above
30. Which of the following control structures is used in every program?
A. Repetition
B. Selection
C. Sequence
D. Switching
E. None of the above
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