MA 10 Info Systems - Design, Acq, Dev

Question 1

7 phases of SDLC (systems development life cycle)

Answer 1

Initial feasibility study
Requirements analysis and definition
Appliaccation design/selection
Systems development / confg
Prelim testing
System implementation
Post-implementation evaluation

Question 2

Parallel conversion +/-

Answer 2

+ lowest risk of convesion errors
+ allows org to compare performance of new system
- expensive and time-consuming
- confusing for staff

Question 3

Direct cutover +/-

Answer 3

\+ cost-effective
\+ useful when there is no other option
- highest risk of confsrion errors - no back-up
- issues must be resolved immediately
- data integrity issues could arise

Question 4

Modular/Pilot +/-

Answer 4

+ limits exposure risk from errors
+ newly experiecned employees from one area can help others
- confusion and conflicts for staff
- data integrity issues can arise when info xfer between systems

Question 5

Phased +/-

Answer 5

+ allows staff time to become accustomed

• costly
• mix-ups can occur

Question 6

Internal audit objectives

Answer 6

Determining effectiveness of each phase and ensuring project objectives are met
Review various documents and identify deficiencies

Question 7

External audit objectives

Answer 7

Ensure completeness and accuracy of FS
Pay attention to ensuring data is converted from old to new system
Mix of control and substantive-based procedures used to gain assurance over execution of the SLDC process