Software Design and Development

Question 1

Describe agile methodologies

Answer 1

Agile programming is a type of development process suited to smaller projects. It is designed to be as flexible as possible where the specification may change throughout the development process resulting in reduced development time and costs.

Question 2

Describe iterative development process

Answer 2

Software development is an iterative process. When using this approach, programmers move from stage to stage in sequence unless problems are encountered. If problems are encountered at one stage, then it may be necessary to revisit earlier stages of the waterfall cycle. If problems are encountered within a stage, it may be necessary to repeat elements of that stage before moving on.

Question 3

Advantage and disadvantage of Iterative development process

Answer 3

Rigid Planning Structure
Good for large teams

Can over complicate simple projects.
Little involvement of client after analysis

Question 4

Advantage and disadvantage of Agile methodologies.

Answer 4

Ongoing involvement of client allows changes to be agreed quickly
Changes cause less delay or can be tackled in the next version.

Usually no legally binding agreement at the start
Needs close version control and tracking of changes

Question 5

What is the purpose of a program

Answer 5

The purpose of a program is a clear and accurate description of what the program is to achieve

Question 6

What is the scope of a program

Answer 6

The scope is a collection of statements that explain what the program should be able to do or work with, usually written as a list of deliverables;

Question 7

What is the boundaries of a program

Answer 7

The boundaries are the opposite of scope; what the program should not be able to do or work with;

Question 8

What are the functional requirements of a program

Answer 8

Functional requirements are clear statements explaining what every input, process and output does in the program.

Question 9

Draw and label the shapes for a structure diagram.

Answer 9

Loop
Selection
Process
Predefined function

Question 10

What are the three levels of design

Answer 10

1. Top level design
2. The data flow
3. Refinements

Question 11

What will data flow help with

Answer 11

Data flow will allow us to identify the parameters being passed in and out

Question 12

Implement a 1D Parallel Array

Answer 12

lines=len(readings)
Name=[””]len(lines)
Subject1=[0]len(lines)

counter=0
while counter < len(lines):
         Name [counter] = [counter] [0]
         Subject [counter] = [counter] [0]
         counter +=1

Question 13

Implement a record

Answer 13

class competitors;
          name : str = ""
          subject1 : int = 0
          subject2 : float = 0.0

Question 14

Two benefits of using a local variable

Answer 14

Aids Modularity

Removes name clashing with other local variables in other subroutines