- A
Create a write ACL on the incident table with condition 'false'
Why wrong: A write ACL controls create/update, not delete.
- B
Create a read ACL on the incident table with condition 'false'
Why wrong: A read ACL controls read access, not delete.
- C
Set the incident table 'Update' access to 'none' in the table configuration
Why wrong: Update access affects editing, not deleting.
- D
Create an application ACL on the incident table with the 'delete' operation set to 'no access'
Application ACLs can control delete operation and 'no access' denies it.
Question 223 of 520
Prevent Delete Operation on Table — Using ACL in ServiceNow | ServiceNow Certified System Administrator Explained
This SNOW-CSA practice question tests your understanding of application rules, acl and notifications. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 system administrator needs to prevent users from deleting any records in the 'incident' table. Which method will achieve this most effectively?
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
✓
Create an application ACL on the incident table with the 'delete' operation set to 'no access'
Option D is correct because an Application ACL with the 'delete' operation set to 'no access' explicitly denies the delete operation on the 'incident' table, regardless of any other ACLs or user roles. This is the most effective method to prevent record deletion because it directly targets the delete operation at the table level, overriding any inherited or role-based permissions.
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 write ACL on the incident table with condition 'false'
Why it's wrong here
A write ACL controls create/update, not delete.
- ✗
Create a read ACL on the incident table with condition 'false'
Why it's wrong here
A read ACL controls read access, not delete.
- ✗
Set the incident table 'Update' access to 'none' in the table configuration
Why it's wrong here
Update access affects editing, not deleting.
- ✓
Create an application ACL on the incident table with the 'delete' operation set to 'no access'
Why this is correct
Application ACLs can control delete operation and 'no access' denies it.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'write' ACLs with delete permissions, assuming that blocking write access also blocks deletions, but ServiceNow treats delete as a separate operation requiring its own ACL.
Detailed technical explanation
How to think about this question
In ServiceNow, ACLs are evaluated in a specific order: application ACLs take precedence over table ACLs, and the most restrictive permission wins. The 'delete' operation is distinct from 'write' (which covers create and update) and 'read', so a dedicated ACL with 'no access' for delete ensures that even users with elevated roles (like admin) cannot delete records unless explicitly overridden by a higher-priority ACL. This is critical in regulated environments where audit trails require that incident records are never removed.
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 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Application Rules, ACL and Notifications — study guide chapter
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FAQ
Questions learners often ask
What does this SNOW-CSA question test?
Application Rules, ACL and Notifications — This question tests Application Rules, ACL and Notifications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an application ACL on the incident table with the 'delete' operation set to 'no access' — Option D is correct because an Application ACL with the 'delete' operation set to 'no access' explicitly denies the delete operation on the 'incident' table, regardless of any other ACLs or user roles. This is the most effective method to prevent record deletion because it directly targets the delete operation at the table level, overriding any inherited or role-based permissions.
What should I do if I get this SNOW-CSA 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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Last reviewed: Jul 4, 2026
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