SNOW-CAD Designing interfaces and user experiences Practice Question
A company wants to create a custom homepage for their service portal that displays three different data sources in a single view. The design must ensure that if one data source fails to load, the other two continue to function. Which implementation approach aligns best with this requirement?
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
✓
Use three separate widgets each fetching their own data
Using three separate widgets isolates failures. Options A, C, and D can cause cascading failures. Option B ensures independence.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a parent widget that calls three child widgets
Why it's wrong here
Incorrect: Parent-child setup can still lead to cascading failures if parent fails.
- ✓
Use three separate widgets each fetching their own data
Why this is correct
Correct: Separate widgets run independently, so one failure does not affect others.
- ✗
Use a widget that loads data in parallel with error handling
Why it's wrong here
Incorrect: Despite parallel loading, if the single widget has a critical error, all data may be lost.
- ✗
Use a single widget that fetches all data sequentially
Why it's wrong here
Incorrect: Sequential fetching means one failure stops all data loading.
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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.