21. To run the old system and the new system at the same time for a specified period, the system implementation approach used is

A. pilot
B. phased
C. parallel
D. direct
E. None of the above

22. The mistake, committed by interchanging two digits in a numeric held, during data entry, is called

A. transposition error
B. transcription error
C. Beta testing error
D. Alpha testing error
E. None of the above

23. Decision tree uses

A. pictorial depictation of alternate conditions
B. nodes and branches
C. consequences of various depicted alternates
D. All of the above
E. None of the above

24. Problem analysis is done during

A. system design phase
B. systems analysis phase
C. before system test
D. All of the above
E. None of the above

25. Top-down programming is

A. a group of related fields
B. a map of the programmer’s view of the data
C. an approach in which the top module is first tested then program modules are added from the highest level to the lowest level
D. a series or group of components that perform one or more operations of a more complex system
E. None of the above