The answer is the configuration using `valid users = +staff` and `write list = @managers`. This works because `valid users = +staff` restricts share access exclusively to members of the 'staff' Unix group (the `+` prefix denotes a group), while `write list = @managers` overrides the default read-only setting for members of the 'managers' group (the `@` prefix also indicates a group), granting them full read/write control. On the LPIC-2 exam, this tests your understanding of Samba’s layered permission model, where `valid users` controls entry and `write list` selectively elevates write access—a common trap is confusing the `+` and `@` prefixes, but both refer to Unix groups in Samba. The search intent for "Samba share read-only staff full control managers" reflects this exact scenario, often appearing in performance-based items where you must combine directives without using `read only = no`. Memory tip: think of `valid users` as the bouncer at the door, and `write list` as the VIP pass for full control.
LPIC-2 File Sharing and Samba Practice Question
This LPIC-2 practice question tests your understanding of file sharing and samba. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A system administrator wants to configure a Samba share that grants read-only access to the 'staff' group and full control to the 'managers' group. Which share configuration achieves this?
Option A is correct because the `valid users = +staff` directive restricts access to members of the 'staff' group (the `+` prefix means a Unix group), while the `write list = @managers` directive grants write access to members of the 'managers' group (the `@` prefix also means a Unix group). This combination ensures that 'staff' members have read-only access by default, and 'managers' members have full control (read/write).
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
Common exam trap: answer the scenario, not the keyword
The trap here is confusing the `+` and `@` prefixes for group references in Samba, leading candidates to incorrectly apply `+` in `write list` or `@` in `valid users` without understanding the subtle differences in their behavior.
Detailed technical explanation
How to think about this question
In Samba, the `valid users` and `write list` parameters can reference Unix groups using either the `@` prefix or the `+` prefix, but the `+` prefix is typically used with `valid users` to indicate a group that is not in the NIS netgroup map. The `write list` parameter overrides the default read-only setting for specified users or groups, and it respects the `@` prefix for groups. This configuration is commonly used in mixed-access file shares where different departments require different permission levels.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
File Sharing and Samba — This question tests File Sharing and Samba — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: [share]
path = /srv/share
valid users = +staff
write list = @managers — Option A is correct because the `valid users = +staff` directive restricts access to members of the 'staff' group (the `+` prefix means a Unix group), while the `write list = @managers` directive grants write access to members of the 'managers' group (the `@` prefix also means a Unix group). This combination ensures that 'staff' members have read-only access by default, and 'managers' members have full control (read/write).
What should I do if I get this LPIC-2 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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