ISC Security Architecture Modeling Practice Question
Which security principle is enforced when you restrict an application's ability to modify system files?
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
✓
Least privilege
Least privilege ensures that the application has only the permissions required for its function, preventing system-wide modifications.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Least privilege
Why this is correct
Restricting access to only necessary files is least privilege.
- ✗
Defense in depth
Why it's wrong here
This is a layering concept.
- ✗
Economy of mechanism
Why it's wrong here
Refers to design simplicity.
- ✗
Complete mediation
Why it's wrong here
Checks all access requests.
About these practice questions
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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.