CHAPTER 22 Systems Design, Implementation, and Operation

Question 1

1. There are many ways to design an AIS, so systems designers must make many design decisions.
   A company could modify existing software or redesign its business processes and
   develop software to support the new processes. Which of the following standards should
   not be used to evaluate design alternatives?
   a. How well it meets organizational and system objectives
   b. How well it meets user needs
   c. Whether it’s the cheapest solution
   d. How advantages weigh against disadvantages.

Answer 1

c. Whether it’s the cheapest solution (Correct)

Question 2

2. In-house or outsourcing is a design alternative for
   a. operations.
   b. input medium.
   c. output medium.
   d. processor.

Answer 2

a. operations. (Correct)

Question 3

3. Which of the following is the correct order of the steps in physical systems design?
   a. input, file and database, output, controls, procedures, program
   b. file and database, output, input, procedures, program, controls
   c. output, input, file and database, procedures, program, controls
   d. output, file and database, input, program, procedures, controls

Answer 3

d. output, file and database, input, program, procedures, controls [Correct. See
Figure 22-2.]

Question 4

4. Program development is one of the most time-consuming SDLC activities. The processes
   of discovering and eliminating program errors is known as
   a. cleaning
   b. debugging
   c. delousing
   d. fixing

Answer 4

b. debugging (Correct)

Question 5

5. Changing from an old system to a new one by terminating the old AIS when the new one is introduced, is referred to as
   a. direct conversion
   b. parallel conversion
   c. phase-in conversion
   d. pilot conversion

Answer 5

a. direct conversion (Correct)

Question 6

6. What percentage should be allocated to testing, debugging and rewriting software?
   a. 5%
   b. 20 to 30 %
   c. 40%
   d. 50%

Answer 6

b. 20 to 30 % (Correct)

Question 7

7. Which of the following statements is true?
   a. The Gartner Group estimates that programming bugs not found until later in the
   SDLC cost 25% to 30% more to correct than if they had been found earlier in the SDLC.
   b. Direct system conversion is the least risky of the system conversion methods.
   c. Many software developers state that 5% to 10% of software development costs should be allocated to testing, debugging, and rewriting software.
   d. Over the life of a system, only 30% of information systems work takes place during
   development; the remaining 70% is spent maintaining the system.

Answer 7

d. Over the life of a system, only 30% of information systems work takes place during
development; the remaining 70% is spent maintaining the system.

Question 8

8. Which of the following describes the systems testing approach that uses real transactions
and files rather than hypothetical ones?
a. walk-through 
b. processing of test transactions 
c. acceptance test 
d. parallel conversion test

Answer 8

c. acceptance test [Correct. An acceptance test uses real transaction data to test a new
system. ]

Question 9

9. What is the process of discontinuing an old system as soon as a new one is
introduced?
a. direct conversion 
b. parallel conversion 
c. phase-in conversion 
d. pilot conversion

Answer 9

a. direct conversion [Correct. In direct conversion, the old system is discontinued as soon
as the new one is activated.]

Question 10

10. Which of the following describes designing a program from the top-down to more detailed
levels?
a. hierarchical program design 
b. top-down program design 
c. parallel program design
d. unstructured program design

Answer 10

a. hierarchical program design [Correct. Hierarchical program design is the process of
programming from the general level to the detailed level.]