The answer is clarifying user requirements. Prototyping’s primary benefit is that it creates a tangible, working model of the system early in development, allowing stakeholders to interact with it and provide concrete feedback. This process validates assumptions and uncovers misinterpretations before significant resources are committed, directly reducing the risk of building the wrong product. On the CISA exam, this concept tests your understanding of the system development life cycle and the auditor’s focus on risk management; a common trap is choosing “reducing development cost,” but prototyping often increases initial costs to save far more later by preventing rework. Remember the mnemonic “PRIME” — Prototyping Reduces Interpretation Mistakes Early — to keep the primary advantage clear.
CISA Practice Question: Information Systems Acquisition, Development and Implementation
This CISA practice question tests your understanding of information systems acquisition, development and implementation. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which of the following is the PRIMARY benefit of using a prototype during system development?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Clarifying user requirements
Option B is correct because prototyping helps clarify and validate user requirements early, reducing the risk of misinterpretation. Reducing development cost (A) is not a primary benefit; prototyping can actually increase cost initially. Accelerating coding (C) and minimizing documentation (D) are not primary objectives.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Clarifying user requirements
Why this is correct
Prototyping provides a tangible model that users can interact with, leading to clearer and more accurate requirements.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Accelerating coding
Why it's wrong here
While prototyping may improve understanding, it does not directly accelerate the coding phase.
✗
Minimizing documentation
Why it's wrong here
Prototyping may reduce some documentation needs but that is not the primary benefit.
✗
Reducing development cost
Why it's wrong here
Prototyping may increase initial cost but reduces rework; cost reduction is not the primary benefit.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CISA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which CISA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Information Systems Acquisition, Development and Implementation — This question tests Information Systems Acquisition, Development and Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Clarifying user requirements — Option B is correct because prototyping helps clarify and validate user requirements early, reducing the risk of misinterpretation. Reducing development cost (A) is not a primary benefit; prototyping can actually increase cost initially. Accelerating coding (C) and minimizing documentation (D) are not primary objectives.
What should I do if I get this CISA question wrong?
Identify which CISA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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