- A
Create a UI Policy that sets the field as read-only and uses a condition to filter.
Why wrong: UI Policies do not filter reference fields; they control visibility and mandatory state.
- B
Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'.
Reference Qualifiers directly filter the records shown in the lookup.
- C
Write a Client Script on load that sets the reference qualifier using setRefQual().
Why wrong: Client-side setRefQual works but may not be as reliable as server-side reference qualifier for initial load.
- D
Use a Data Policy to enforce a condition on the field.
Why wrong: Data policies enforce mandatory/read-only, not filtering.
SNOW-CAD Core Application Development Practice Question
This SNOW-CAD practice question tests your understanding of core application development. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 service catalog item has a variable set that includes a reference field to the 'cmdb_ci' table. The requirement is to show only 'Server' type CI's in the reference field. Which approach should be used?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'.
Option B is correct because a Reference Qualifier on a variable definition allows you to filter the records displayed in a reference field using a condition string. By setting the condition 'sys_class_name=Server', only CI records with that specific sys_class_name will appear, which directly meets the requirement to show only 'Server' type CIs.
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.
- ✗
Create a UI Policy that sets the field as read-only and uses a condition to filter.
Why it's wrong here
UI Policies do not filter reference fields; they control visibility and mandatory state.
- ✓
Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'.
Why this is correct
Reference Qualifiers directly filter the records shown in the lookup.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Write a Client Script on load that sets the reference qualifier using setRefQual().
Why it's wrong here
Client-side setRefQual works but may not be as reliable as server-side reference qualifier for initial load.
- ✗
Use a Data Policy to enforce a condition on the field.
Why it's wrong here
Data policies enforce mandatory/read-only, not filtering.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse UI Policies or Data Policies with reference qualifiers, thinking they can filter reference field data, when in fact only a Reference Qualifier (or a derived condition) directly controls which records are available for selection.
Detailed technical explanation
How to think about this question
Under the hood, a Reference Qualifier is stored as a condition string in the 'reference_qual' field of the variable definition (or dictionary entry). When the reference field loads, the platform appends this condition to the GlideRecord query, ensuring only matching records are returned. This server-side filtering is more secure and performant than client-side alternatives, as it prevents unnecessary data transfer and cannot be bypassed by browser manipulation.
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-CAD 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.
- →
Core Application Development — study guide chapter
Learn the concepts, then practise the questions
- →
Core Application Development practice questions
Targeted practice on this topic area only
- →
All SNOW-CAD questions
500 questions across all exam domains
- →
ServiceNow Certified Application Developer CAD study guide
Full concept coverage aligned to exam objectives
- →
SNOW-CAD practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SNOW-CAD practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Working with Data practice questions
Practise SNOW-CAD questions linked to Working with Data.
Platform Features and Integration practice questions
Practise SNOW-CAD questions linked to Platform Features and Integration.
Integrating and managing application data practice questions
Practise SNOW-CAD questions linked to Integrating and managing application data.
Automating application logic with business rules and scripts practice questions
Practise SNOW-CAD questions linked to Automating application logic with business rules and scripts.
Application development using ServiceNow Studio practice questions
Practise SNOW-CAD questions linked to Application development using ServiceNow Studio.
Creating and customizing tables and data practice questions
Practise SNOW-CAD questions linked to Creating and customizing tables and data.
Designing interfaces and user experiences practice questions
Practise SNOW-CAD questions linked to Designing interfaces and user experiences.
Core Application Development practice questions
Practise SNOW-CAD questions linked to Core Application Development.
User Interface Development practice questions
Practise SNOW-CAD questions linked to User Interface Development.
SNOW-CAD fundamentals practice questions
Practise SNOW-CAD questions linked to SNOW-CAD fundamentals.
SNOW-CAD scenario practice questions
Practise SNOW-CAD questions linked to SNOW-CAD scenario.
SNOW-CAD troubleshooting practice questions
Practise SNOW-CAD questions linked to SNOW-CAD troubleshooting.
Practice this exam
Start a free SNOW-CAD practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SNOW-CAD question test?
Core Application Development — This question tests Core Application Development — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'. — Option B is correct because a Reference Qualifier on a variable definition allows you to filter the records displayed in a reference field using a condition string. By setting the condition 'sys_class_name=Server', only CI records with that specific sys_class_name will appear, which directly meets the requirement to show only 'Server' type CIs.
What should I do if I get this SNOW-CAD 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.
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 →
Keep practising
More SNOW-CAD practice questions
- A company has a custom table 'u_training_course' with a reference field to 'sys_user' named 'u_instructor'. The requirem…
- A company has a custom table 'u_asset' with a reference field 'u_location' pointing to 'cmn_location'. When a user chang…
- A developer needs to create a new application scope. Which of the following is a best practice when defining the scope?
- An application has a custom table 'u_project' with a field 'u_status' (choice list: Not Started, In Progress, Completed)…
- A company has a custom table 'u_incident_task' that extends 'task'. The developer wants to add a field 'u_approval' that…
- Which TWO of the following are types of UI Policies? (Choose two.)
Last reviewed: Jun 25, 2026
This SNOW-CAD 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-CAD 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.