This SNOW-CAD practice question tests your understanding of working with data. 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.
An admin created a new table 'u_custom_asset' with a reference field to 'cmdb_ci'. After creating a form, users report that when they select a CI, additional fields do not auto-populate as expected. What 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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The reference field lacks a reference qualifier or default value configuration for auto-population.
Option C is correct because the table might not have a reference qualifier or default values configured, so auto-population does not occur. Option A is wrong because configuration items are standard tables. Option B is wrong because the reference field itself doesn't require a business rule for basic auto-population. Option D is wrong because access controls are not preventing auto-population.
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 reference field lacks a reference qualifier or default value configuration for auto-population.
Why this is correct
Correct: Auto-population is typically configured via reference qualifiers or default values.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
ACLs are blocking the read operation on the cmdb_ci table.
Why it's wrong here
Wrong: ACLs affect security, not auto-population.
✗
A business rule is missing on the reference field to trigger auto-population.
Why it's wrong here
Wrong: Auto-population via reference qualifiers does not require a business rule.
✗
The cmdb_ci table is a system table and cannot be referenced from custom tables.
Why it's wrong here
Wrong: System tables can be referenced.
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.
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.
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.
Working with Data — This question tests Working with Data — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The reference field lacks a reference qualifier or default value configuration for auto-population. — Option C is correct because the table might not have a reference qualifier or default values configured, so auto-population does not occur. Option A is wrong because configuration items are standard tables. Option B is wrong because the reference field itself doesn't require a business rule for basic auto-population. Option D is wrong because access controls are not preventing auto-population.
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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