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.
Which TWO of the following are valid CMDB base classes? (Choose exactly 2.)
cmdb_ci_win_system
Why wrong: This is a child class of cmdb_ci_computer.
cmdb_ci
This is the root CMDB CI table.
cmdb_ci_linux_system
Why wrong: This is a child class of cmdb_ci_computer.
cmdb_ci_service
This is a base class for services.
cmdb_ci_computer
Why wrong: This is a child class of cmdb_ci.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
cmdb_ci
In ServiceNow, the CMDB base classes are the top-level classes from which all other configuration items (CIs) inherit. `cmdb_ci` is the root base class for all CIs, and `cmdb_ci_service` is a base class specifically for business and technical services. Both are defined in the CMDB data model as foundation classes that cannot be deleted and serve as parents for more specific CI types.
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.
cmdb_ci_win_system
Why it's wrong here
This is a child class of cmdb_ci_computer.
cmdb_ci
Why this is correct
This is the root CMDB CI table.
Related concept
Read the scenario before looking for a memorised answer.
cmdb_ci_linux_system
Why it's wrong here
This is a child class of cmdb_ci_computer.
cmdb_ci_service
Why this is correct
This is a base class for services.
Related concept
Read the scenario before looking for a memorised answer.
cmdb_ci_computer
Why it's wrong here
This is a child class of cmdb_ci.
Common exam traps
The trap here is that candidates often mistake common CI types like `cmdb_ci_win_system` or `cmdb_ci_computer` for base classes because they appear frequently in CMDB tables, but ServiceNow defines only a few true base classes (e.g., `cmdb_ci`, `cmdb_ci_service`, `cmdb_ci_infrastructure`) from which all others inherit.
Detailed technical explanation
The ServiceNow CMDB uses a hierarchical inheritance model where `cmdb_ci` is the root base class with attributes like `name`, `sys_id`, and `install_status`. `cmdb_ci_service` is another base class that supports service-aware CMDB, enabling relationships between technical services (e.g., `cmdb_ci_service_discovered`) and business services. This structure allows for granular CI categorization while maintaining a single source of truth for configuration data, critical for ITIL processes like incident and change management.
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 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
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FAQ
Database Administration and CMDB — This question tests Database Administration and CMDB — Read the scenario before looking for a memorised answer..
The correct answer is: cmdb_ci — In ServiceNow, the CMDB base classes are the top-level classes from which all other configuration items (CIs) inherit. `cmdb_ci` is the root base class for all CIs, and `cmdb_ci_service` is a base class specifically for business and technical services. Both are defined in the CMDB data model as foundation classes that cannot be deleted and serve as parents for more specific CI types.
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 24, 2026
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.
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