CSSLP Secure Software Testing Practice Question
Which TWO of the following are common challenges when implementing IAST?
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
✓
Inability to find vulnerabilities in unreachable code.
IAST implementation challenges typically revolve around performance overhead and compatibility with the application stack.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Requirement for full source code access.
Why it's wrong here
IAST is runtime-based and does not strictly require source.
- ✓
Inability to find vulnerabilities in unreachable code.
Why this is correct
IAST can only see what executes during testing.
- ✗
Lack of false positives.
Why it's wrong here
IAST can still produce false positives.
- ✗
Difficulty in installing agents on client machines.
Why it's wrong here
IAST is server-side, not client-side.
- ✓
Performance overhead on the application.
Why this is correct
Instrumentation introduces latency into the runtime execution.
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.