Stepwise Refinement

Which of these design methodologies involves taking a main problem and breaking it down into sub-problems?

• Top-down Design and Rapid Application Development

• Agile and Top-down Design

• Top-down Design and Stepwise Refinement

• Only Top-down Design

Stepwise refinement is:

• Identifying the main steps needed in your program

• Breaking down each step until it becomes easy to code

Which of the following is an advantage of good program design?

• Helps avoid coding errors

• Saves time because less errors need to be found and fixed

• Shows you understand the problem before you start

• All of the above

Which of these is not a reason for breaking problems down into modules

• Reusability

• Easier to test and debug

• Allows only one programmer to work on a solution

• Individual modules are easier to maintain.

A solid black arrow represents

• Boolean data

• Non Boolean data

• Iteration

• Selection

A white (unfilled) arrow represents

• Boolean data

• Non Boolean data

• Selection

• Iteration

A diamond attached to a module represents

• Data flow

• Iteration

• Selection

• None of the options

A structure chart does NOT show which of the following peices of information

• Iteration

• Selection

• Hierarchy

• Data types

The arrows in a structure chart demonstrate

• Parameters

• Non Boolean data

• Boolean data

• The data type

A graphical representation of the modular structure of a solution is a

• Structure chart

• Modular diagram

• Top down design

• Identfier table