- A
The table's ACL denies read access to the user.
Why wrong: ACL issues typically produce a different error or empty result, but it's less likely if other widgets show data.
- B
The widget's client script has a syntax error.
Why wrong: Client script errors affect user interactions, not the initial data load.
- C
The portal page is not configured to include the widget.
Why wrong: If the widget renders, it is included on the page.
- D
An error in the widget's server script prevents data from being queried.
The server script is the primary data source; a scripting error would cause no data to be returned.
Question 256 of 500
Widget Shows No Data: Check Server Script for Errors
This SNOW-CAD practice question tests your understanding of user interface development. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 service portal widget is supposed to load data from a table and display it in a list. The widget renders but shows no data. Which is the most likely cause?
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 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
✓
An error in the widget's server script prevents data from being queried.
The correct answer is D because the widget renders (client-side works) but shows no data, indicating the server-side script that queries the table failed. Option A (ACL denial) would typically show an error or empty data but is less common than a script error. Option B (client script syntax error) would affect interactivity, not initial data load. Option C (portal page not configured) would prevent the widget from rendering entirely.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 table's ACL denies read access to the user.
Why it's wrong here
ACL issues typically produce a different error or empty result, but it's less likely if other widgets show data.
- ✗
The widget's client script has a syntax error.
Why it's wrong here
Client script errors affect user interactions, not the initial data load.
- ✗
The portal page is not configured to include the widget.
Why it's wrong here
If the widget renders, it is included on the page.
- ✓
An error in the widget's server script prevents data from being queried.
Why this is correct
The server script is the primary data source; a scripting error would cause no data to be returned.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Trap categories for this question
Command / output trap
ACL issues typically produce a different error or empty result, but it's less likely if other widgets show data.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SNOW-CAD ACL questions on filtering logic and placement.
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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 — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: An error in the widget's server script prevents data from being queried. — The correct answer is D because the widget renders (client-side works) but shows no data, indicating the server-side script that queries the table failed. Option A (ACL denial) would typically show an error or empty data but is less common than a script error. Option B (client script syntax error) would affect interactivity, not initial data load. Option C (portal page not configured) would prevent the widget from rendering entirely.
What should I do if I get this SNOW-CAD question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SNOW-CAD ACL questions on filtering logic and placement.
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?
Standard ACLs match source addresses.
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Last reviewed: Jun 24, 2026
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