CSSLP Secure Software Architecture And Design Practice Question
When designing an API, which approach best supports the 'Complete Mediation' principle?
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
✓
Verifying authorization on every single API request.
Complete mediation requires that every access to every object be checked for authority.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Relying on the frontend to filter out unauthorized menu items.
Why it's wrong here
Client-side checks are easily bypassed.
- ✗
Checking authorization only once at the beginning of the user session.
Why it's wrong here
This fails to account for privilege changes during the session.
- ✗
Allowing public access to all GET methods in the API.
Why it's wrong here
This violates the principle entirely.
- ✓
Verifying authorization on every single API request.
Why this is correct
Ensures every interaction is authorized against current policy.
About these practice questions
One of 198 original CSSLP practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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 CSSLP 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 CSSLP exam.