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 THREE configuration directives are necessary to enable Winbind for Active Directory authentication on a Samba domain member?
Correct; specifies the Kerberos realm for authentication.
D
workgroup = EXAMPLE
Why wrong: Incorrect; while often set, it is not strictly required if netbios name matches, but still needed in practice. However, for this question we omit it.
E
idmap config * : range = 10000-20000
Correct; defines the UID/GID range for ID mapping.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
security = ads
Option A is correct because setting 'security = ads' tells Samba to operate as an Active Directory domain member, using Kerberos for authentication and LDAP for identity lookups. This directive is mandatory for Winbind to communicate with an AD domain controller.
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.
✓
security = ads
Why this is correct
Correct; enables Active Directory domain membership.
Related concept
Read the scenario before looking for a memorised answer.
✗
winbind use default domain = yes
Why it's wrong here
Incorrect; optional, simplifies username format.
✓
realm = EXAMPLE.COM
Why this is correct
Correct; specifies the Kerberos realm for authentication.
Related concept
Read the scenario before looking for a memorised answer.
✗
workgroup = EXAMPLE
Why it's wrong here
Incorrect; while often set, it is not strictly required if netbios name matches, but still needed in practice. However, for this question we omit it.
✓
idmap config * : range = 10000-20000
Why this is correct
Correct; defines the UID/GID range for ID mapping.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'workgroup' with 'realm' or assume 'winbind use default domain = yes' is mandatory, when in fact only 'security = ads', 'realm', and an idmap range are strictly required for basic Winbind AD integration.
Trap categories for this question
Real-world vs exam trap
Incorrect; while often set, it is not strictly required if netbios name matches, but still needed in practice. However, for this question we omit it.
Detailed technical explanation
How to think about this question
Winbind uses the 'idmap config * : range' directive to allocate Unix UIDs/GIDs from a specified range for AD users and groups, which is essential for mapping AD security identifiers (SIDs) to POSIX IDs. Without this range, Winbind cannot create local ID mappings, causing authentication failures. The 'realm' directive specifies the Kerberos realm (e.g., EXAMPLE.COM) and must match the AD domain's DNS name for ticket-based authentication to work.
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 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
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: security = ads — Option A is correct because setting 'security = ads' tells Samba to operate as an Active Directory domain member, using Kerberos for authentication and LDAP for identity lookups. This directive is mandatory for Winbind to communicate with an AD domain controller.
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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