ISC Systems Security Engineering Foundations Practice Question
You are integrating security requirements into the Systems Engineering V-Model. At which stage should the Information Systems Security Engineer (ISSE) define the security functional requirements to ensure traceability to the system architecture?
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
✓
Requirements Analysis
Security requirements must be defined during the Requirements Analysis phase to ensure they are baked into the system design rather than added as an afterthought.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Requirements Analysis
Why this is correct
Requirements analysis is the foundational stage where security constraints and functional needs are mapped to system goals.
- ✗
Detailed Design
Why it's wrong here
Design follows requirements; requirements should already be solidified.
- ✗
System Integration and Testing
Why it's wrong here
This is too late in the lifecycle to define requirements.
- ✗
Operational Maintenance
Why it's wrong here
This occurs after the system is already deployed.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ISC exam.