Chapter 13: Delivering the Requirements (5%)

Question 1

describe waterfall lifecycle

Answer 1

feasibility study

analysis

design

development

testing

implementation

Question 2

what does the ‘V’ model show

Answer 2

shows explicit connection between the earlier and later phases of the lifecycle.

shows how test criteria used at later stages is derived from the earlier stages

Question 3

what is the extended ‘V’ model

Answer 3

adds another layer (Analyse Business needs —> Review benefits)

provides focus on benefits realisation (if not realised then action taken)

BA involved in top 2 layers but provides support at lower levels

Question 4

fundamental difference between incremental vs iterative lifecycles

Answer 4

incremental needs a complete set of requirements + overall design

Question 5

stages of agile lifecycle

Answer 5

1. establish business need + evaluate options
2. establish solution backlog
3. plan solution increment
4. develop solution
5. deploy + evaluate solution increment

Question 6

disadvantages of waterfall, ‘V’ model and incremental lifecycles

Answer 6

• may not be time to define all requirements at outset
• unlikely business actors know exactly what they want at outset
• may not be possible to implement some business changes at time required
• pace of business change so rapid that completely defined, requirements likely to be out of date

Question 7

disadvantages of iterative approaches

Answer 7

• not always possible to allow requirements to evolve if complex/ legal constraints
• requirements defined w/o overview understanding of intended solution (leads to fragmented view)
• too frequent product releases can be unacceptable to customers

Question 8

disadvantage of incremental lifecycle

Answer 8

total cost of delivering solution likely higher than delivering in 1 release

in 2nd + subsequent increments, necessary to carry out regression testing (to make sure additional features don’t cause issues)

Question 9

role of development team in Scrum responsibilities:

Answer 9

develop the product

empowered to be self-organising

should include software developers + business representatives

Question 10

role of Product Owner in Scrum responsibilities:

Answer 10

govern product backlog, includes:
- prioritisation
- selecting items for development within specific sprint

Question 10

role of Scrum Master in Scrum responsibilities:

Answer 10

ensure development team can perform work by removing any impediments to progress

provide required resources