This SNOW-CSA practice question tests your understanding of application rules, acl and notifications. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
What is the default behavior of an ACL if no ACL record exists for a given operation?
Log the attempt and allow.
Why wrong: It does not log; it simply denies.
Prompt the user for confirmation.
Why wrong: No prompt is shown.
Deny access.
ServiceNow denies access if no ACL record exists.
Allow access.
Why wrong: Default is deny.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Deny access.
Option B is correct because ServiceNow denies access by default. Option A is wrong because default is deny, not allow. Option C is wrong because no prompt is shown. Option D is wrong because it does not log; it denies silently.
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
For each option: why learners choose it and why it is or isn't the right answer here.
Log the attempt and allow.
Why it's wrong here
It does not log; it simply denies.
Prompt the user for confirmation.
Why it's wrong here
No prompt is shown.
Deny access.
Why this is correct
ServiceNow denies access if no ACL record exists.
Related concept
Standard ACLs match source addresses.
Allow access.
Why it's wrong here
Default is deny.
Common exam traps
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
No prompt is shown.
Detailed technical explanation
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.
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
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
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-CSA ACL questions on filtering logic and placement.
Application Rules, ACL and Notifications — study guide chapter
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FAQ
Application Rules, ACL and Notifications — This question tests Application Rules, ACL and Notifications — Standard ACLs match source addresses..
The correct answer is: Deny access. — Option B is correct because ServiceNow denies access by default. Option A is wrong because default is deny, not allow. Option C is wrong because no prompt is shown. Option D is wrong because it does not log; it denies silently.
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-CSA ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
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Last reviewed: Jun 24, 2026
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