1.2.3 Software Development

Question 1

1.2.3 A)
What is the software development life cycle

Answer 1

Analysis
Design
Development
Testing
Implementation
evaluation
maintenance

Question 2

1.2.3 A)
What is the software development life cycle
What is the analysis phase

Answer 2

What needs for the stakeholders. Strengths and weaknesses. What data types will be used

Question 3

1.2.3 A)
What is the software development life cycle
What is the design phase

Answer 3

Inputs and outputs , security , hardware , UI , testing plan

Question 4

1.2.3 A)
What is the software development life cycle
What is the development phase

Answer 4

Split design into self contained modules

Question 5

1.2.3 A)
What is the software development life cycle
What is the testing phase

Answer 5

Alpha and beta testing
Alpha in house testing
beta carried out by end user
white and black box testing
white box = all possibilities of program are tested (Dry Runs / Trace Tables )
black box = without being aware of internal structure
(Tests the expected output based on input)

Question 6

1.2.3 A)
What is the software development life cycle
What is the implementation phase

Answer 6

Make changes from testing , publish software

Question 7

1.2.3 A)
What is the software development life cycle
What is the evaluation phase

Answer 7

Effectiveness of the software what can be changed

Question 8

1.2.3 A)
What is the software development life cycle
What is the maintenance phase

Answer 8

Updates

Question 9

1.2.3 A)
What is the waterfall lifecycle

Answer 9

Complete in sequence Analysis includes feasibility of project using TELOS
Technical , Economical , Legal , Operational , Scheduling

if changes made all levels must be revisit, users have little input

Question 10

1.2.3 A)
What is the agile methodology

Answer 10

Aims to improve flexibility adapts to changes in user requirement

problem broken down into sections which developed in parallel priority on user satisfaction

Analyse > design prototype > build prototype > userfeed back > refine prototype > design prototype or > final product.

Question 11

1.2.3 A)
What is extreme programming

Answer 11

An agile methodology in which pairs of programmers alongside a representative end user make a team. Aim to improve quality of code in order to be effective programmers must communicate.

Question 12

1.2.3 A)
What is the spiral model

Answer 12

Four key stages with focus of effectively managing risks large projects.
Analyse system requirements > pinpoint and mitigate risks, development , testing evaluation.
suitable for large programs and expensive

Question 13

1.2.3 A)
What is rapid application development

Answer 13

Iterative method , partially functioning prototype constantly build up apon. User requirements gathered. user feedback. continued till final product.
May be in eff

Prototype is created (1)
– (Evaluated and) feedback used to
inform next iteration (1)
– Any changes are made (1)
– Process repeated until…(1)
…prototype becomes final
product. (1)

Question 14

1.2.3 B)
Adv , DAdv , uses of waterfall

Answer 14

A) Straight forward, clearly documented
D) Low flexibility , no risk analyse, limited user input
U) Low risk projects, general purpose software, large projects

Question 15

1.2.3 B)
Adv , DAdv , uses of Agile

Answer 15

A) High qual code , Flexibility , lots of user input
D) low documentation , consistent interaction between programmer and user
U) small project with unclear requirements

Question 16

1.2.3 B)
Adv , DAdv , uses of spiral

Answer 16

A) risk analysis , catered for user needs , many prototypes
D) Expensive , lack of efficient code
U) large code, risk intensive , high budget

Question 17

1.2.3 B)
Adv , DAdv , uses of rapid applications development

Answer 17

A) catered to user , usable , quick development
D) low documentation
U) small , low budget, small time period

Question 18

1.2.3 C)
writing and following algorithms

Answer 18

inputs clearly defined
valid outputs for defined inputs
able to deal w/ invalid inputs
reaches a stopping conditions
well documented
well commented