XK0-006 System Management Practice Question
A user wants to change the permissions of a file to give the owner full control, the group read and execute, and others no access. Which of the following chmod commands will achieve this?
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 750 file
750 in octal gives rwx (7) to owner, r-x (5) to group, --- (0) to others. Option A is correct. Option B is 700 (rwx------) giving group no access. Option C is 770 (rwxrwx---) giving group write. Option D is 755 (rwxr-xr-x) giving others read/execute.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
chmod 750 file
Why this is correct
Correct: owner rwx, group r-x, others ---.
- ✗
chmod 700 file
Why it's wrong here
Gives group no permissions.
- ✗
chmod 770 file
Why it's wrong here
Gives group write permission.
- ✗
chmod 755 file
Why it's wrong here
Gives others read and execute.
Go deeper
Related to this question
Learn chapter
File Permissions and Ownership
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
Key term
chmod
chmod is a command in Linux and Unix-like operating systems used to change the permissions (read, write, execute) of a file or directory.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 practice question is part of Courseiva's free CompTIA 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 XK0-006 exam.