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LFCA · Question #14
LFCA Question #14: Real Exam Question with Answer & Explanation
The correct answer is A: Discretionary Access Control. By default, Linux employs Discretionary Access Control (DAC), where the owner of a file or resource controls access permissions.
Submitted by neha2k· May 4, 2026Linux Fundamentals
Question
By default, the Linux operating system uses what access control to manage files/users?
Options
- ADiscretionary Access Control
- BMandatory Access Control
- CLeast Privilege
- DFull Control
Explanation
By default, Linux employs Discretionary Access Control (DAC), where the owner of a file or resource controls access permissions.
Common mistakes.
- B. Mandatory Access Control (MAC) is a more restrictive model often implemented with security enhancements like SELinux or AppArmor, and is not the default.
- C. Least Privilege is a security principle, not an access control model implemented by default for file management in Linux.
- D. Full Control is a type of permission level within an access control model, not an access control model itself.
Concept tested. Linux access control models
Reference. https://www.redhat.com/en/topics/linux/what-is-selinux
Topics
#Access Control#File Permissions#DAC#Linux Security
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