CAS-004 Security Architecture Practice Question
A company uses an API gateway to manage their microservices. Which security control should the gateway enforce to prevent abuse from excessive API calls?
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
✓
Rate limiting
Rate limiting restricts the number of requests a client can make in a given period, preventing abuse.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
JWT verification
Why it's wrong here
Incorrect; JWT verification ensures token validity.
- ✗
Input validation
Why it's wrong here
Incorrect; input validation prevents injection attacks, not abuse.
- ✓
Rate limiting
Why this is correct
Correct; rate limiting controls the volume of API calls.
- ✗
OAuth 2.0
Why it's wrong here
Incorrect; OAuth 2.0 is for authorization.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.