ITPEC IP October 2023 Question 50
Which of the following is an appropriate description concerning the characteristics of the prototyping model?
Explanation
A trial model early on fixes the user interface and checks performance — prototyping lets users see and try the system before it is built for real.
In the prototyping model a working trial model (prototype) is built at the start, users evaluate it, and their feedback settles the requirements, especially the user interface; performance can be checked at the same time. Misunderstandings surface before design and coding, which cuts the rework that late changes to the specification would otherwise cause.
Answer (a)
Why not others:
- •(b) — repeating the development process and assessing risk in each cycle is the spiral model
- •(c) — completing part of the functions in each cycle and growing the system step by step is incremental development
- •(d) — requirements analysis, design, production and test in strict order, suited to large systems, is the waterfall model
Key rule: Recognise each model by its signature: prototyping, an early trial model for user feedback; spiral, risk analysis every cycle; incremental, functions added in stages; waterfall, one pass through the phases in order.
Software Development Management Techniques · AI-written, may contain errors
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