- A
Load the macro asynchronously using UI Macro configuration
Why wrong: Asynchronous loading only changes timing, not the amount of server work.
- B
Move the queries to a client script using GlideAjax to reduce server load
Why wrong: Moving to client side does not reduce total server processing; it may even increase it due to additional overhead.
- C
Use g_form.addOption() to populate a reference field instead of building the macro
Why wrong: This changes functionality and may not apply to all cases.
- D
Replace GlideRecord queries with GlideAggregate and cache the results
GlideAggregate reduces the number of queries by using aggregates, and caching avoids repeated calls, but caching alone may not help if data changes frequently. Actually, using GlideAggregate to combine queries is more effective than caching alone.
Quick Answer
The answer is to replace GlideRecord queries with GlideAggregate and cache the results, as this directly reduces the number of database round-trips by combining multiple lookups into a single aggregated query. GlideAggregate performs calculations like counts or sums server-side, minimizing data transfer and processing overhead, while caching stores the output so subsequent macro executions avoid redundant database calls. On the ServiceNow Certified Application Developer exam, this scenario tests your understanding of server-side optimization techniques for UI Macros, a common performance pitfall where developers default to GlideRecord loops. The trap is assuming caching alone solves the problem—caching only helps if the same query repeats, whereas GlideAggregate cuts the initial workload. A useful memory tip: “Aggregate first, cache second—one query beats many, and stored results beat repeated trips.”
SNOW-CAD User Interface Development Practice Question
This SNOW-CAD practice question tests your understanding of user interface development. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 UI Macro on a form is causing slow load times. The macro uses multiple GlideRecord queries in its server-side script. The developer wants to optimize performance without altering functionality. Which action is most effective?
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
Replace GlideRecord queries with GlideAggregate and cache the results
Option B is correct because combining queries into a single GlideAggregate reduces database calls. Option A is incorrect because caching may help only if queries are repeated. Option C is incorrect because using client-side GlideAjax moves load to client but does not reduce server processing. Option D is incorrect because asynchronous loading does not reduce total server work.
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.
- ✗
Load the macro asynchronously using UI Macro configuration
Why it's wrong here
Asynchronous loading only changes timing, not the amount of server work.
- ✗
Move the queries to a client script using GlideAjax to reduce server load
Why it's wrong here
Moving to client side does not reduce total server processing; it may even increase it due to additional overhead.
- ✗
Use g_form.addOption() to populate a reference field instead of building the macro
Why it's wrong here
This changes functionality and may not apply to all cases.
- ✓
Replace GlideRecord queries with GlideAggregate and cache the results
Why this is correct
GlideAggregate reduces the number of queries by using aggregates, and caching avoids repeated calls, but caching alone may not help if data changes frequently. Actually, using GlideAggregate to combine queries is more effective than caching alone.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 SNOW-CAD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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User Interface Development — study guide chapter
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FAQ
Questions learners often ask
What does this SNOW-CAD question test?
User Interface Development — This question tests User Interface Development — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Replace GlideRecord queries with GlideAggregate and cache the results — Option B is correct because combining queries into a single GlideAggregate reduces database calls. Option A is incorrect because caching may help only if queries are repeated. Option C is incorrect because using client-side GlideAjax moves load to client but does not reduce server processing. Option D is incorrect because asynchronous loading does not reduce total server work.
What should I do if I get this SNOW-CAD question wrong?
Identify which SNOW-CAD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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 →
Last reviewed: Jun 24, 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.
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