CSSLP Secure Software Implementation Practice Question
When implementing file uploads, which practice is most effective in preventing remote code execution (RCE)?
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
✓
Storing files outside the web root and renaming them
Renaming files and storing them outside the web root prevents attackers from executing malicious scripts they have uploaded.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Storing files outside the web root and renaming them
Why this is correct
This prevents direct execution of uploaded files by the web server.
- ✗
Checking the file size
Why it's wrong here
Size limits prevent DoS, not RCE.
- ✗
Validating the file extension only
Why it's wrong here
Extensions can be easily spoofed.
- ✗
Enabling execution permissions on the upload folder
Why it's wrong here
This would facilitate RCE, not prevent it.
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.