The answer is that Windows clients fail because they do not have SMB encryption enabled by default, so they reject the server’s requirement for encrypted connections. When Samba enforces `smb encrypt = required`, it demands that every SMB3 session use encryption from the start, but Windows 10 clients only support encryption if it is explicitly requested by the client—typically via Group Policy or a registry key—and will not automatically negotiate it. This tests your understanding of SMB3 encryption negotiation asymmetry on the LPIC-2 exam, where a common trap is assuming that setting `server min protocol = SMB3` alone enables encryption, when in fact the `smb encrypt` directive controls the server’s encryption demand. Linux clients succeed because `mount.cifs` with the `seal` option explicitly requests encryption, matching the server’s requirement. Memory tip: think of Windows as a “passive listener” for encryption—it won’t ask for it unless told, so a demanding server gets no handshake.
LPIC-2 File Sharing and Samba Practice Question
This LPIC-2 practice question tests your understanding of file sharing and samba. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Your company runs a Samba file server (version 4.15) in a mixed environment with Windows 10 and Linux clients. The server is part of an Active Directory domain. Recently, a new security policy requires that all SMB connections use SMB3 encryption. You have configured 'smb encrypt = required' in the [global] section of smb.conf and restarted smbd. However, Windows clients report that they cannot connect to the server, while Linux clients can connect using mount.cifs with the 'seal' option. You check smb.conf and verify that 'server min protocol = SMB3' is set. What is the most likely cause of the Windows clients' inability to connect?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Windows clients do not have SMB encryption enabled by default, so they reject the required encryption
Windows 10 clients do not enable SMB encryption by default; they require the client to request encryption, but when the server sets 'smb encrypt = required', the server demands encryption on all connections. Windows clients without explicit encryption configuration (e.g., via Group Policy or registry) will fail to connect because they do not negotiate SMB3 encryption automatically. Linux clients succeed because mount.cifs with the 'seal' option explicitly requests encryption, matching the server's requirement.
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.
✗
The 'server min protocol = SMB3' should be 'SMB2' to allow Windows 10 to negotiate SMB3
Why it's wrong here
Windows 10 supports SMB3 natively, protocol negotiation is fine.
✓
Windows clients do not have SMB encryption enabled by default, so they reject the required encryption
Why this is correct
SMB encryption must be enabled on Windows client side.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The Samba server must be joined to the domain again after changing encryption settings
Why it's wrong here
Re-joining is not required for encryption changes.
✗
The 'smb encrypt' parameter is deprecated and should be replaced by 'server smb encrypt'
Why it's wrong here
'smb encrypt' is valid in Samba 4.15.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume Windows clients automatically support and negotiate SMB3 encryption when the server requires it, overlooking that Windows clients need explicit configuration to enable encryption.
Detailed technical explanation
How to think about this question
SMB3 encryption is negotiated during the SMB session setup; the server advertises its encryption requirement via the 'smb encrypt' parameter, but the client must support and request encryption in its capabilities. Windows 10 clients only enable SMB encryption when configured via Group Policy (e.g., 'Enable SMB encryption' or 'Require encryption') or registry key 'EncryptData' under the SMB client settings. In mixed environments, this mismatch often causes connectivity issues until client-side encryption is enforced.
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: Windows clients do not have SMB encryption enabled by default, so they reject the required encryption — Windows 10 clients do not enable SMB encryption by default; they require the client to request encryption, but when the server sets 'smb encrypt = required', the server demands encryption on all connections. Windows clients without explicit encryption configuration (e.g., via Group Policy or registry) will fail to connect because they do not negotiate SMB3 encryption automatically. Linux clients succeed because mount.cifs with the 'seal' option explicitly requests encryption, matching the server's requirement.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.