XK0-006 System Management Practice Question
A Linux administrator wants to change the permissions of a file to allow the owner to read, write, and execute; the group to read and execute; and others to read only. Which chmod command should be used?
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 754 file
Octal 754 corresponds to rwxr-xr--: owner rwx (7), group r-x (5), others r-- (4).
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 764 file
Why it's wrong here
764 gives rwxrw-r--, which gives group write permission, not needed.
- ✗
chmod 744 file
Why it's wrong here
744 gives rwxr--r--, which gives group only read, not read and execute.
- ✗
chmod 755 file
Why it's wrong here
755 gives rwxr-xr-x, which gives others execute permission, not required.
- ✓
chmod 754 file
Why this is correct
Correct: owner rwx, group r-x, others r--.
Go deeper
Related to this question
Learn chapter
Linux Fundamentals and History
Key term
Linux
Linux is an open-source operating system that manages computer hardware and software, widely used in servers, desktops, and embedded systems.
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.