The answer is that the missing servers are classified under a different CMDB class than the one being queried. This occurs because the CMDB organizes configuration items into a hierarchical class structure, such as cmdb_ci_server as a parent and cmdb_ci_win_server as a child; if a Windows server is misclassified under a different parent class like cmdb_ci_linux_server, a query filtering specifically on the Windows server class will exclude it entirely. On the ServiceNow CSA exam, this tests your understanding of CMDB class hierarchy and how discovery sources populate CIs based on identification and classification rules—a common trap is assuming discovery guarantees correct classification, when manual reclassification or incorrect rules can silently hide CIs. To remember this, think “class dictates visibility”: a server is only found in a query if its class matches the filter, regardless of whether it was discovered.
SNOW-CSA Database Administration and CMDB Practice Question
This SNOW-CSA practice question tests your understanding of database administration and cmdb. 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.
A company's CMDB has been populated with configuration items (CIs) from various discovery sources. However, when querying the CMDB for all Windows servers, the result set is missing some servers that are known to exist. The administrator has verified that the servers are discovered and appear in the discovery logs. What is the most likely cause of this issue?
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
✓
The missing servers are classified under a different CMDB class than the one being queried.
Option D is correct because the CMDB organizes CIs into a hierarchical class structure (e.g., cmdb_ci_server, cmdb_ci_win_server). If a Windows server is classified under a different parent class (e.g., cmdb_ci_linux_server due to misclassification or a custom class), a query filtering specifically on the Windows server class will exclude it. Discovery populates the CI with the correct class based on the identification and classification rules, but manual reclassification or an incorrect identification rule can place the CI in a different class, making it invisible to class-specific queries.
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 missing servers are duplicates and have been merged into other CIs.
Why it's wrong here
Duplicates result in multiple CIs, not missing ones.
✗
The missing servers have a status of 'Retired' in the CMDB.
Why it's wrong here
Status affects display but not query inclusion unless filtered.
✗
The user running the query does not have the cmdb_read role.
Why it's wrong here
If the user can see some CIs, they likely have read access; this would affect all CIs.
✓
The missing servers are classified under a different CMDB class than the one being queried.
Why this is correct
Class hierarchy and classification determine query results.
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume discovery success guarantees the CI is in the expected class, but ServiceNow's CMDB class hierarchy and classification rules can place discovered CIs into a different class, making them invisible to class-specific queries even though they exist in the CMDB.
Detailed technical explanation
How to think about this question
The CMDB class hierarchy is defined by the 'sys_class_name' field, which determines which table a CI resides in (e.g., cmdb_ci_win_server extends cmdb_ci_server). Queries using the 'cmdb_ci_win_server' table only return records with that exact sys_class_name or its subclasses; a CI misclassified as 'cmdb_ci_linux_server' would not appear. This often occurs when discovery identification rules are misconfigured or when a CI is manually reclassified without updating its class, causing it to be orphaned from its expected class-based reports and filters.
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 SNOW-CSA 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.
Database Administration and CMDB — This question tests Database Administration and CMDB — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The missing servers are classified under a different CMDB class than the one being queried. — Option D is correct because the CMDB organizes CIs into a hierarchical class structure (e.g., cmdb_ci_server, cmdb_ci_win_server). If a Windows server is classified under a different parent class (e.g., cmdb_ci_linux_server due to misclassification or a custom class), a query filtering specifically on the Windows server class will exclude it. Discovery populates the CI with the correct class based on the identification and classification rules, but manual reclassification or an incorrect identification rule can place the CI in a different class, making it invisible to class-specific queries.
What should I do if I get this SNOW-CSA 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 SNOW-CSA practice question is part of Courseiva's free ServiceNow 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 SNOW-CSA 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.