26. The environment in systems parlance refers to

A. a sub-system
B. the boundary
C. a part outside the boundaries
D. All of the above
E. None of the above

27. When desk-checking an algorithm, you should set up a table that contains _____.

A. One column for each input item
B. One column for each output item
C. One column for each processing item
D. Both a and b
E. a, b, and c

28. Data dictionary contains detail of

A. data structures
B. data flows
C. data stores
D. All of the above
E. None of the above

29. Which of the following statements is true

A. as parallel run involves two different terminals accessing a common database
B. computers are essential for systems Analysis
C. Flow of information in an organization is always vertical
D. alpha testing is the verification process a system goes through for the first time
E. None of the above

30. A self check digit is useful in detecting

A. transcription errors only
B. transposition errors only
C. Random errors only
D. All of the above
E. None of the above