Information Systems Acquisition, Development, and Implementation →easyMultiple ChoiceObjective-mapped
CISA Practice Question: Information Systems Acquisition, Development, and Implementation
An organization is implementing a new financial system using the waterfall SDLC model. Which of the following is the MOST critical control to ensure that business requirements are met?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Formal user acceptance testing (UAT) sign-off
In the waterfall model, requirements are defined upfront and formal sign-off at each phase is critical. Formal user acceptance testing (UAT) is the key control to ensure the system meets business needs before deployment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Automated unit testing results
Why it's wrong here
Unit testing verifies individual components, not end-to-end business functionality.
- ✗
Code reviews by the development team
Why it's wrong here
Code reviews focus on code quality and security, not on whether business requirements are met.
- ✗
Detailed technical design documents
Why it's wrong here
Design documents are important but do not directly confirm that business requirements are met; they translate requirements into technical specifications.
- ✓
Formal user acceptance testing (UAT) sign-off
Why this is correct
UAT is the phase where end users validate that the system meets their requirements, and formal sign-off provides documented acceptance.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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