CSSLP Secure Software Testing Practice Question
You are performing a fuzzing campaign on a REST API. The API uses JSON Web Tokens (JWT). What is the most effective way to include these tokens in the fuzzer input?
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
✓
Configure the fuzzer to inject a fresh, valid JWT in the Authorization header before each request.
The fuzzer must be configured to refresh the JWT periodically or use a script to inject a valid token into the Authorization header for every request.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
null
Why it's wrong here
null
- ✓
Configure the fuzzer to inject a fresh, valid JWT in the Authorization header before each request.
Why this is correct
JWTs usually have short expiration times; the fuzzer must handle this.
- ✗
Use the same JWT throughout the entire fuzzing duration.
Why it's wrong here
The token will expire, leading to 401 Unauthorized errors.
- ✗
Exclude the Authorization header from the fuzzing target.
Why it's wrong here
This would prevent testing the token handling logic.
- ✗
Disable authentication for the entire API during the test.
Why it's wrong here
This is unrealistic and ignores auth-related vulnerabilities.
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.