SNOW-CAD Creating and customizing tables and data Practice Question
This SNOW-CAD practice question tests your understanding of creating and customizing tables and data. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Exhibit
Refer to the exhibit.
Table: u_incident_task
Fields:
u_incident: reference to incident
u_task_type: choice (Investigation, Resolution, Documentation)
u_assigned_to: reference to sys_user
u_state: choice (Open, In Progress, Closed)
Client script: onChange on u_task_type
Script:
function onChange(control, oldValue, newValue, isLoading, isTemplate) {
if (isLoading || newValue == '') {
return;
}
var ga = new GlideAjax('TaskTypeAjax');
ga.addParam('sysparm_name', 'getDefaultAssignedTo');
ga.addParam('sysparm_task_type', newValue);
ga.getXMLAnswer(function(answer) {
if (answer) {
g_form.setValue('u_assigned_to', answer);
}
});
}
A developer implemented the client script shown in the exhibit to auto-populate the assigned-to field based on the task type. However, when the task type is changed, the assigned-to field is not updated. The server-side script 'TaskTypeAjax' is correctly defined and returns a valid sys_id. What is the most likely reason for the failure?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The Script Include 'TaskTypeAjax' is not client-callable
The client script attempts to call a Script Include named 'TaskTypeAjax' from the client side. By default, Script Includes are not accessible from client scripts unless the 'Client callable' checkbox is enabled in the Script Include record. Since the script is failing to update the assigned-to field, the most likely cause is that 'TaskTypeAjax' is not marked as client-callable, preventing the GlideAjax request from executing successfully.
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.
✗
The client script does not check if oldValue is different from newValue
Why it's wrong here
It doesn't check, but that wouldn't prevent execution.
✓
The Script Include 'TaskTypeAjax' is not client-callable
Why this is correct
It must be marked as client-callable in its definition.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The client script returns on isLoading, preventing execution
Why it's wrong here
It returns during loading, but onChange triggers after loading.
✗
A UI policy is overriding the assigned-to field
Why it's wrong here
UI policies run client-side but wouldn't prevent the setValue.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume any Script Include can be called from a client script, but ServiceNow enforces an explicit 'Client callable' flag to control access from the browser.
Detailed technical explanation
How to think about this question
GlideAjax requires the Script Include to have the 'Client callable' property set to true, which generates a public function accessible from client-side code. Without this property, the Script Include is only available server-side, and any client-side attempt to invoke it will result in a silent failure or an error in the browser console. In real-world scenarios, developers often forget to check this checkbox, leading to mysterious failures where the Ajax call appears to do nothing.
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.
Creating and customizing tables and data — This question tests Creating and customizing tables and data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The Script Include 'TaskTypeAjax' is not client-callable — The client script attempts to call a Script Include named 'TaskTypeAjax' from the client side. By default, Script Includes are not accessible from client scripts unless the 'Client callable' checkbox is enabled in the Script Include record. Since the script is failing to update the assigned-to field, the most likely cause is that 'TaskTypeAjax' is not marked as client-callable, preventing the GlideAjax request from executing successfully.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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