SNOW-CAD Core Application Development Practice Question
This SNOW-CAD practice question tests your understanding of core application development. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 developer needs to capture the time when a field (assigned_to) was last changed. Which approach should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a business rule on 'after' update that sets a 'last_assigned' field when assigned_to changes.
Option B is correct because a business rule configured on the 'after' update event can check if the 'assigned_to' field value has changed and then set a 'last_assigned' field to the current date/time. This approach is native to the platform, runs server-side, and ensures the timestamp is captured reliably without external dependencies.
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 business rule on 'after' update that sets a 'last_assigned' field when assigned_to changes.
Why this is correct
An after business rule can set a field on the same record or related record.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a database trigger to log the change.
Why it's wrong here
ServiceNow does not support direct database triggers.
✗
Use a dictionary override to enable auditing.
Why it's wrong here
Auditing logs changes but does not provide a field that can be queried directly.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose calculated fields (Option A) thinking they can dynamically capture timestamps, but calculated fields are read-only and cannot persist a value when a field changes.
Detailed technical explanation
How to think about this question
Under the hood, a business rule on 'after' update runs after the database write completes, allowing you to compare the previous and current values of 'assigned_to' using the 'changes()' API method. If the field changed, you can set the 'last_assigned' field with gs.nowDateTime() to capture the precise server time. A subtle behavior: if the business rule runs on 'before' update, the new value is not yet committed, so 'changes()' may not work reliably; 'after' is the correct choice for this pattern.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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 — 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: Create a business rule on 'after' update that sets a 'last_assigned' field when assigned_to changes. — Option B is correct because a business rule configured on the 'after' update event can check if the 'assigned_to' field value has changed and then set a 'last_assigned' field to the current date/time. This approach is native to the platform, runs server-side, and ensures the timestamp is captured reliably without external dependencies.
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.
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Question Discussion
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