Access Control Lists: Definition Levels and Role Requirements in ServiceNow
Which THREE statements about Access Control Lists (ACLs) are true? (Choose THREE.)
Quick Answer
The correct answer is that if 'requires role' is checked and no roles are listed, only users with the 'admin' role can access. This is true because ServiceNow Access Control Lists (ACLs) enforce security by evaluating role requirements at multiple granularity levels—table, record, field, and script—and when a role condition is left empty, the system defaults to the admin role as a fail-safe to prevent unauthorized access. On the ServiceNow Certified System Administrator CSA exam, this concept tests your understanding of ACL definition levels and role requirements, often appearing in multiple-select questions where a common trap is assuming an empty role field allows everyone, when in fact it restricts to admins. A helpful memory tip: "No roles listed means only admins are enlisted."
⚠ Common exam trap
ServiceNow often tests the misconception that ACLs must have a script to evaluate conditions, but in ServiceNow, conditions can be purely role-based or use simple field comparisons without any scripting.
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
✓
ACLs can be defined for tables, records, fields, and scripts.
In ServiceNow, Access Control Lists (ACLs) can be defined to control access at multiple granularity levels: tables (entire table operations), records (specific rows), fields (individual columns), and scripts (execution of business rules or script includes). This allows administrators to enforce security policies precisely where needed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
ACLs can be defined for tables, records, fields, and scripts.
Why this is correct
ACL types include table, record, field, and script.
- ✓
ACLs can use condition scripts to grant or deny access.
Why this is correct
Condition scripts are evaluated to determine access.
- ✓
If 'requires role' is checked and no roles are listed, only users with the 'admin' role can access.
Why this is correct
Empty role list with requires role checked means admin only.
- ✗
An ACL can only have one role specified.
Why it's wrong here
Multiple roles can be listed.
- ✗
An ACL must have a script to evaluate conditions.
Why it's wrong here
Script is optional; condition can be simple.
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Same concept, more angles
1 more way this is tested on SNOW-CSA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An administrator creates a new ACL for the 'incident' table with type 'record', operation 'read', condition script 'current.assignment_group == gs.getUser().getMyGroups()', and requires role 'snc_internal'. A user with role 'snc_internal' who is a member of group 'Service Desk' can view incidents assigned to 'Service Desk' but cannot view incidents assigned to 'Network Support'. What is the most likely reason?
hard- A.The condition script uses 'current.assignment_group' which returns a sys_id, but 'gs.getUser().getMyGroups()' returns a list of group names.
- B.The condition script should use 'current.assignment_group.isOneOf(gs.getUser().getMyGroups())' instead.
- C.The user does not have the 'snc_internal' role.
- ✓ D.Another ACL with higher order denies read access to all incidents not matching the condition.
Why D: ACLs in ServiceNow are evaluated in order of their 'order' field, and the first matching ACL (either allowing or denying access) determines the outcome. If another ACL with a higher order (lower numeric value) denies read access to incidents not matching the condition, that deny rule will take precedence over the new ACL, preventing the user from viewing incidents assigned to 'Network Support' even though the new ACL would allow it. The user's role and group membership are satisfied, so the issue lies in ACL ordering and a conflicting deny rule.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SNOW-CSA practice question is part of Courseiva's free ServiceNow certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SNOW-CSA exam.