CSSLP Secure Software Testing Practice Question
A developer is using AFL (American Fuzzy Lop) for fuzzing a C++ application. What is the primary requirement for achieving high coverage?
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
✓
Instrumenting the code during compilation with afl-clang or afl-gcc.
AFL uses instrumentation to track branch coverage; without compiling with AFL's compiler wrappers, the feedback loop cannot function.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configuring the fuzzer to use only random byte-flipping.
Why it's wrong here
AFL is more sophisticated than simple random bit flipping.
- ✗
null
Why it's wrong here
null
- ✗
Running the fuzzer on a virtual machine without network access.
Why it's wrong here
This affects environment security but not coverage efficiency.
- ✓
Instrumenting the code during compilation with afl-clang or afl-gcc.
Why this is correct
Instrumentation provides the feedback mechanism AFL uses to find new code paths.
- ✗
Providing the fuzzer with a binary that was stripped of all symbols.
Why it's wrong here
Symbols are not required, but instrumentation is.
About these practice questions
This CSSLP question is part of Courseiva's 198-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. 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.