Quick Answer
The correct answer is `/etc/samba/smb.conf` and `/etc/samba/smbpasswd`. These two files are foundational to Samba configuration and authentication: `smb.conf` defines all share definitions, global settings, and security parameters that control how the Samba server behaves on the network, while `smbpasswd` stores user credentials in Samba’s traditional encrypted LM/NT hash format, enabling SMB/CIFS authentication without relying on system passwords. On the LPIC-2 exam, this question tests your understanding of Samba’s core file structure and the distinction between configuration and authentication responsibilities. A common trap is confusing `smbpasswd` with the modern `tdbsam` backend or the `/etc/passwd` file, but the exam specifically targets the traditional file-based authentication method. Remember the memory tip: “Config in `conf`, creds in `passwd`” — the `.conf` file controls the server, and the `passwd` file holds the passwords.
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.
Which TWO files are commonly used by Samba for configuration and user authentication? (Choose two.)
/etc/samba/smbusers
Why wrong: Optional file for mapping Windows usernames to Unix usernames.
/etc/passwd
Why wrong: System password file, not Samba-specific.
/etc/samba/smbpasswd
Stores Samba user passwords.
/etc/hosts.allow
Why wrong: Used by TCP wrappers, not Samba-specific.
/etc/samba/smb.conf
Main Samba configuration file.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
/etc/samba/smbpasswd
Option C is correct because `/etc/samba/smbpasswd` is the traditional Samba password file used for user authentication in Samba's own encrypted password format (LM/NT hashes). Option E is correct because `/etc/samba/smb.conf` is the primary Samba configuration file that defines shares, global settings, and security parameters. Both files are essential for Samba's operation: `smb.conf` controls the server behavior, while `smbpasswd` stores user credentials for SMB/CIFS authentication.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
/etc/samba/smbusers
Why it's wrong here
Optional file for mapping Windows usernames to Unix usernames.
/etc/passwd
Why it's wrong here
System password file, not Samba-specific.
/etc/samba/smbpasswd
Why this is correct
Stores Samba user passwords.
Related concept
Read the scenario before looking for a memorised answer.
/etc/hosts.allow
Why it's wrong here
Used by TCP wrappers, not Samba-specific.
/etc/samba/smb.conf
Why this is correct
Main Samba configuration file.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse `/etc/samba/smbusers` (user mapping) with authentication files, or mistakenly think `/etc/passwd` is a Samba-specific file, when in fact Samba uses its own password storage separate from the system's `/etc/passwd`.
Detailed technical explanation
Samba's `smbpasswd` file stores password hashes in a format compatible with older SMB/CIFS protocols (LanMan and NT hashes), while modern Samba deployments often use `tdbsam` or `ldapsam` backends stored in `/var/lib/samba/private/passdb.tdb`. The `smb.conf` file supports parameters like `security = ads` for Active Directory integration, and `passdb backend = tdbsam` to switch from the legacy `smbpasswd` file to a more scalable database. In real-world scenarios, administrators must ensure both files have correct permissions (e.g., `smbpasswd` should be owned by root and mode 600) to prevent unauthorized access to password hashes.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the LPIC-2 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
File Sharing and Samba — This question tests File Sharing and Samba — Read the scenario before looking for a memorised answer..
The correct answer is: /etc/samba/smbpasswd — Option C is correct because `/etc/samba/smbpasswd` is the traditional Samba password file used for user authentication in Samba's own encrypted password format (LM/NT hashes). Option E is correct because `/etc/samba/smb.conf` is the primary Samba configuration file that defines shares, global settings, and security parameters. Both files are essential for Samba's operation: `smb.conf` controls the server behavior, while `smbpasswd` stores user credentials for SMB/CIFS authentication.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This LPIC-2 practice question is part of Courseiva's free LPI 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 LPIC-2 exam.
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