hardMultiple ChoiceObjective-mapped
XK0-006 Practice Question: Refer to the exhibit
Exhibit
Refer to the exhibit. $ getfacl file.txt # file: file.txt # owner: alice # group: staff user::rw- user:bob:r-- group::r-- mask::rw- other::---
Refer to the exhibit. Alice is the owner of file.txt. Bob is a member of the staff group. What permissions does Bob have on file.txt?
⚠ Common exam trap
A common pitfall is assuming that group membership determines Bob's access, but the ACL entry for Bob as an individual user takes precedence. Always check for user-specific ACL entries before evaluating group permissions.
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
✓
Read only
Bob has read-only access because the ACL (Access Control List) for file.txt includes an entry 'user:bob:r--', which grants Bob read permission. This ACL entry overrides any group permissions, so even though the group 'staff' may have different permissions, Bob's effective permissions are determined by the ACL entry specific to him.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Read only
Why this is correct
The ACL entry 'user:bob:r--' gives read permission.
- ✗
Read and write
Why it's wrong here
Bob's ACL entry only grants read.
- ✗
No access
Why it's wrong here
Bob has read access via ACL.
- ✗
Write only
Why it's wrong here
Bob does not have write permission.
Visual reference
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
ACL
An Access Control List is a set of rules that determines who or what can access specific network resources or data.
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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.