1.2.3

Question 1

What are the seven stages of the Software Development Life Cycle? [7]

Answer 1

Analysis[1]. Design[1]. Development[1]. Testing[1]. Implementation[1]. Evaluation[1]. Maintenance[1]

Question 2

Explain what happens during the Analysis Stage? [2]

Answer 2

Stakeholders state what they require from the finished product[1]. This information is used to clearly define the problem and the system requirements[1]

Question 3

Explain what happens during the Design Stage? [2]

Answer 3

The different aspects of the new system are designed[1]. Such as: Inputs. Outputs. Security. Hardware. User interface[1].

Question 4

Explain what happens during the Development Stage? [1]

Answer 4

The design from the previous stage is used to split the project into individual self contained modules , which are allocated to teams for programming.[1]

Question 5

Expplain what happens during the Testing Stage?[5]

Answer 5

The program is tested against the test plan formed in the Design stage[1]. The types of testing that can be carried out are: Alpha testing[1]. Beta testing[1]. White box testing[1]. Black box testing[1]

Question 6

Explain what happens during the Implementation Stage?[1]

Answer 6

Once the testing stage has been used to make the appropaite changes to the software - it is installed onto the users’ systems [1]

Question 7

Explain what happens during the Evaluation Stage? [1]

Answer 7

The effectiveness of the software is evaluated against the system requirements defined at the analysis stage to evaluate its suitability In solving the problem [1]

Question 8

Explain what happens druing the Maintenance Stage?[2]

Answer 8

Any errors or improvements that could be made to the software are flagged up by the end-users[1]. Developers will often send out software updates to fix any bugs or security issues.[1]

Question 9

What are the five programming methodologies?[5]

Answer 9

Waterfall [1]. Agile [1]. Extreme Programming [1]. Spiral [1]. Rapid Application Development.[1]

Question 10

State the four key stages of the spiral model [4]

Answer 10

Analysing system requirements[1]. Pinpoiting and mitigating risks[1]. Development-Testing and Implementation[1]. Evaluating to inform the next iteration[1]

Question 11

Define Rapid Application development.[1]

Answer 11

RAD is an iterative methodology which uses partially functioning prototypes which are continually built-upon.[1]

Question 12

Define Extreme Programming [1]

Answer 12

An agile model in which the development team consists of a pair of programmers alongside a representitive end-user.[1]

Question 13

What are the advantages of the Waterfall Methodology?[2]

Answer 13

Straightforward to manage[1]. Clearly documented [1]

Question 14

What are the disadvantages of the Waterfall Methodology? [3]

Answer 14

Lack of flexibility[1]. No risk analysis[1]. Limited user improvement [1]

Question 15

What are the advantages of the Agile Methodology>?[3]

Answer 15

Produces high quality code[1]. Flexible to changing requirements[1]. Regular user inputs[1]

Question 16

What are the disadvantages of the Agile Methodology?[2]

Answer 16

Poor documentation[1]. Requires consistent interaction between user and programmer [1]

Question 17

What are the advantages of Extreme Programming?[2]

Answer 17

Produces high quality code[1]. Constant user involvement means high usability [1]

Question 18

What are the disadvantages of Extreme Programming?[2]

Answer 18

High cost of two people working on one project[1]. Teamwork is essential between both programmers. [1]

Question 19

What are the advantages of the Spiral Methodology?[2]

Answer 19

Thorough Risk Analysis. Caters to Changing User Needs[1]. Produces prototypes throughout[1]

Question 20

What are the disadvantages of the Spiral Methodology?[2]

Answer 20

Expensive to hire risk assessors[1]. High costs due to constant prototyping.[1]