SNOW-CAD Practice Test 7 — 10 Questions

Question 1

A developer is customizing a form layout for the 'incident' table. They want to group related fields into titled sections for better usability. Which approach should they use?

Accepted Answer

Add fields to form sections via the Form Layout module. The Form Layout module (sys_ui_form / sys_ui_section) is the native ServiceNow tool for arranging fields into titled sections on a form. Designers use it to add, remove, and reposition fields and to create new sections with headers, which is exactly what the developer needs.

Answer

Create a UI Page and embed it in the form via an HTML field

Answer

Use a catalog client script to rearrange fields dynamically

Answer

Use a UI Policy to show/hide groups of fields

Question 2

A developer writes a Business Rule to calculate a total on an Aggregate field. The rule runs on 'insert' and 'update' on the parent table. However, the total is not updating correctly when child records are deleted. Why?

Accepted Answer

The Business Rule should be on the child table's delete event.. A Business Rule that runs on 'insert' and 'update' on the parent table will not fire when a child record is deleted, because the delete event occurs on the child table, not the parent. To correctly update an aggregate field on the parent when child records are deleted, the Business Rule must be defined on the child table's 'delete' event. This ensures the rule executes when the child record is removed, allowing the aggregate to be recalculated.

Answer

The Business Rule should use 'current' and 'previous' to detect deletion.

Answer

The Business Rule should also run on 'delete'.

Answer

The Business Rule should be a Global Business Rule.

Question 3

A company uses a custom application with a table 'incident_task' to track work on incidents. The requirement is to automatically reassign any incident_task that has not been updated in the last 7 days to a specific 'Escalation' group. A developer writes a Business Rule on the 'incident_task' table with the condition 'Current' table and runs on 'before query'. The script checks if (gs.daysAgo(current.sys_updated_on) >= 7) and then performs a current.assignment_group.setValue('escalation_group_sys_id'), followed by current.update(). After testing, the tasks are not being reassigned. What is the most likely cause of this issue?

Accepted Answer

Before query business rules cannot perform updates; they are read-only.. Before query business rules in ServiceNow are executed during the retrieval of records from the database, and they are strictly read-only. They cannot perform updates, inserts, or deletes because the database operation is not yet complete. Attempting to call current.update() within a before query business rule will be ignored or cause an error, which is why the reassignment never occurs.

Answer

The business rule should be changed to 'after' update.

Answer

The condition should use 'sys_updated_on' instead of 'sys_updated_on' (the same field).

Answer

The script uses current.update() which causes recursion.

Question 4

The above script runs in a business rule on the Incident table. What is a potential issue with this script?

Accepted Answer

It may cause an infinite loop if the same business rule triggers on update.. Updating incidents using gr.update() could trigger the same business rule again (if the rule runs on update), causing an infinite loop. Option A is incorrect because the while loop iterates all matching records, not just the first. Option C is incorrect because the API is not deprecated. Option D is incorrect because update() does commit changes.

Answer

It will only update the first matching record.

Answer

It uses a deprecated API.

Answer

It will not commit changes because update() is not used correctly.

Question 5

A developer is designing a REST message to send data from ServiceNow to an external system. The external system expects a new resource to be created at a specific endpoint. Which HTTP method should be used?

Accepted Answer

POST. The correct HTTP method is POST (option D). POST is used to create new resources on the server. Option A (PUT) is typically used to update or replace an existing resource, not create a new one at a specific endpoint. Option B (PATCH) is used for partial updates to an existing resource. Option C (GET) is used to retrieve data, not create new resources.

Answer

PUT

Answer

PATCH

Answer

GET

Question 6

Which TWO are common issues when troubleshooting a failed LDAP import?

Accepted Answer

LDAP filter syntax is invalid. Option A is correct because an invalid LDAP filter syntax (for example, a malformed search filter such as an unbalanced parenthesis or an unsupported operator) causes the LDAP server to reject the search request, which directly prevents the import from retrieving any entries. Option D is correct because an incorrectly specified Base DN means the search starts from a non-existent or wrong branch of the directory tree, so the import finds no matching objects even though the connection itself succeeds. OAuth is not a native LDAP authentication mechanism, so an expired OAuth token (B) is not a typical LDAP import failure. Attribute mapping mismatches (C) usually cause data to be written incorrectly or fields to be left empty rather than the import to fail outright, and an unreachable LDAP server (E) is a connectivity problem that typically surfaces as a connection error before the import logic runs, making it less specific to a failed import than filter or Base DN errors.

Answer

OAuth token for LDAP is expired

Answer

LDAP attribute mapping does not match target fields

Answer

LDAP server is unreachable

Question 7

In a multi-instance environment, an organization wants to integrate ServiceNow with an on-premise database using JDBC. Which feature is used to establish this connection?

Accepted Answer

External Data Sources. External Data Sources are specifically designed to connect ServiceNow to external databases via JDBC, enabling data synchronization.

Answer

REST API

Answer

Import Set

Answer

SOAP Web Service

Question 8

A developer is working on a catalog client script that references the 'caller_id' field on the 'sc_req_item' table. The caller_id field references the 'sys_user' table. To get the caller's email, which dot-walking syntax is correct?

Accepted Answer

current.caller_id.email. Dot-walking uses the reference field name followed by a dot and the target field. 'caller_id' references the sys_user table, so current.caller_id.email retrieves the caller's email. Option B is wrong because 'caller' is not a field on sc_req_item. Option C is wrong because parentheses are not used in dot-walking. Option D is wrong because you do not need to specify the table name; the reference is automatically followed.

Answer

current.caller.email

Answer

current.caller_id(email)

Answer

current.caller_id.sys_user.email

Question 9

When creating a business rule in Studio, a developer wants the rule to run only when the state field changes from 'New' to 'Work in Progress'. Which condition should be used?

Accepted Answer

current.state.changesTo('Work in Progress'). ChangesTo('Work in Progress') triggers when the field changes to that specific value. Option A triggers on any change, B triggers when changing from a value, and D checks current and previous values incorrectly.

Answer

current.state.changesFrom('New')

Answer

current.state == 'New' && previous.state == 'Work in Progress'

Answer

current.state.changes()

Question 10

Which THREE of the following are correct statements about Service Portal client controllers?

Accepted Answer

They can use AngularJS services like $http and $timeout.. Option E is correct because Service Portal client controllers are indeed AngularJS controllers that execute in the browser to handle client-side logic for widgets. Option A is correct because these controllers run in the AngularJS environment and can inject and use built-in AngularJS services such as $http for AJAX calls and $timeout for deferred execution. Option D is correct because Service Portal provides a custom $scope.server object with get() and post() methods that client controllers use to invoke server-side scripts defined in the widget's server script. Option B is wrong because client controllers run on the client (browser), not the server, and are not invoked via server-side includes. Option C is wrong because the $scope variable is automatically provided by the framework to the controller function; it does not need to be explicitly defined by the developer.

Answer

They run on the server and are called via server-side includes.

Answer

They must define a $scope variable explicitly to bind data to the template.