010-160 Security And File Permissions Practice Question
You are configuring a temporary directory where multiple users save files. To ensure that users can only delete their own files and not files created by others, what must you set?
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
✓
chmod +t /tmp/shared
The sticky bit (represented by the 't' in the others permission field) restricts file deletion to the owner of the file, the directory owner, or root.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
chown root /tmp/shared
Why it's wrong here
Changing ownership does not prevent users from deleting files within the directory.
- ✗
chmod 777 /tmp/shared
Why it's wrong here
777 allows any user to delete any file in the directory.
- ✗
umask 077
Why it's wrong here
Umask affects creation permissions, not existing file deletion.
- ✓
chmod +t /tmp/shared
Why this is correct
The sticky bit prevents unauthorized file deletion.
About these practice questions
Courseiva writes every 010-160 question from scratch — 190 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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 LPI exam blueprint
This 010-160 practice question is part of Courseiva's free LPI 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 010-160 exam.