software dev methodologies (iterative and incremental) (week 1)

Question 1

what is the iterative and incremental model

Answer 1

• -> to develop a system through repeated cycles and in smaller portions at a time.
• -> This allows software developers to take advantage of what was learned during the development of earlier versions of the system.

Question 2

when to use iterative and incremental model

Answer 2

• -> popular for outsource dev projects

- -> need to get the product to market early

Question 3

advantages of iterative and incremental model

Answer 3

• -> easier to manage risk
• -> customers can respond to each build
• -> less costly to change the scope and requirements
• -> easier to test and debug during smaller iterations
• -> generates working software quickly and early during the software development lifecycle

Question 4

disadvantages of iterative and incremental model

Answer 4

• -> needs a clear and complete definition of the system before it can be broken down and built incrementally
• -> total cost may be higher than waterfall

Question 5

what is the example of iterative and incremental model

Answer 5

–> unified process

Question 6

what are the phases in unified process

Answer 6

INCEPTION
ELABORATION
CONSTRUCTION
TRANSITION

Question 7

each iteration involves ________

Answer 7

9 disciplines

Question 8

what is the objective of the inception phase

Answer 8

• -> develop the approximate vision of the system
• -> make the business case
• -> define the scope
• -> roughly estimate the cost and schedule

Question 9

what is the objective of the elaboration phase

Answer 9

• > refine the vision
• > finalize the scope
• > identify and refine all the requirements
• > design and implement core architecture and functions
• > resolve high risks
• > produce realistic estimates for cost and schedule

Question 10

what is the objective of the construction phase

Answer 10

–> The goal of the construction phase is on clarifying the remaining requirements and completing
the development of the system based upon the baselined architecture

–> iteratively implement the remaining low risk, predictable and easier elements

–> prepare for deployment

Question 11

what is the objective of the transition phase

Answer 11

–> complete the beta test and deployment so users have a working system