SNOW-CAD User Interface Development Practice Question
Which THREE factors can negatively impact the performance of a ServiceNow form?
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
✓
Large client script files (e.g., 100KB+).
Options A, B, and C are correct. Multiple UI Policies increase server load and client-side processing. Synchronous Ajax calls block the UI until they complete. Large client script files increase download time and parsing. Option D is wrong because the number of tabs does not significantly impact performance. Option E is wrong because AngularJS directives, when used properly, are not a performance issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Large client script files (e.g., 100KB+).
Why this is correct
Large scripts increase download time and parsing overhead.
- ✓
Synchronous Ajax calls in client scripts.
Why this is correct
Synchronous calls freeze the UI until the server responds.
- ✓
A large number of UI Policies on the form.
Why this is correct
Each UI Policy adds server-side and client-side processing overhead.
- ✗
Many tabs (sections) on the form.
Why it's wrong here
Tabs are lightweight and do not significantly affect performance.
- ✗
Use of AngularJS directives in the form.
Why it's wrong here
AngularJS directives are efficient and not a known performance problem.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.