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Microsoft PL-400 certification exam comprises of 40-60 multiple-choice questions, which candidates must answer within 150 minutes. PL-400 Exam measures the candidates' ability to design, develop, secure, and troubleshoot Power Platform solutions. Candidates are expected to have a good understanding of Power Platform architecture, data modeling, user experience design, security and compliance, and integration with other Microsoft and non-Microsoft services. PL-400 exam is available in English, Japanese, Korean, and Simplified Chinese.

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Microsoft Power Platform Developer Sample Questions (Q197-Q202):

NEW QUESTION # 197
You are developing an app that uses Common Data Service.
You must integrate Common Data Service with a new web application. You must allow the new web application to display data from Common Data Service.
You build a single-page web application using the Web API.
You need to authenticate your app using OAuth.
What should you use?

A. Active Directory Authentication Library (ADAL)
B. Cross-Origin Resource Sharing (CORS)
C. Microsoft Authentication Library (MSAL)
D. Kerberos authentication
E. Windows Communication Foundation (WCF)

Answer: B

Explanation:
OAuth requires an identity provider for authentication. For Dataverse, the identity provider is Azure Active Directory (AAD). To authenticate with AAD using a Microsoft work or school account, use the Azure Active Directory Authentication Libraries (ADAL) or Microsoft Authentication Library (MSAL).
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/authenticate-oauth

NEW QUESTION # 198
A model-driven app has the following JavaScript code. The code is attached to the OnChange event of the Phone (telephone1) field on the Account entity.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:

Box 1: Yes
Xrm.WebApi.updateRecord updates a table record.
Syntax:
Xrm.WebApi.updateRecord(entityLogicalName, id, data).then(successCallback, errorCallback); Box 2: Yes Box 3: No No action would be taken.
Reference:
https://docs.microsoft.com/en-us/powerapps/developer/model-driven-apps/clientapi/reference/xrm-webapi
/updaterecord

NEW QUESTION # 199
A developer must register a step using the Plug-in registration tool.
You need to associate the correct Event Pipeline Stage of Execution with its purpose.
Which stage should you associate with each description? To answer, drag the appropriate stages to the correct descriptions. Each stage may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation

The event pipeline allows you to configure when in the event the plug-in code will execute. The event pipeline is divided into the following events and stages:
Box 1: PreValidation
Pre-event/Pre-Validation
This stage executes before anything else, even before basic validation if the triggering action is even allowed based on security. Therefore, it would be possible to trigger the plug-in code even without actually having permission to do so and great consideration must be used when writing a pre-validation plug-in. Also, execution in this stage might not be part of the database transaction.
Examples:- security checks being performed to verify the calling or logged on user has the correct permissions to perform the intended operation.
Box 2: PreOperation
Pre-event/Pre-Operation
This stage executes after validation, but before the changes has been committed to database. This is one of the most commonly used stages.
Example uses:
If and "update" plug-in should update the same record, it is best practice to use the pre-operation stage and modify the properties. That way the plug-in update is done within same DB transaction without needing additional web service update call.
Box 3: PostOperation
Plug-ins which are to execute after the main operation. Plug-ins registered in this stage are executed within the database transaction.
This stage executed after changes have been committed to database. This is one of the most used stages.
Example uses:
Most of the "Create" plugins are post-event. This allows access to the created GUID and creation of relationships to newly created record.
Reference:
https://community.dynamics.com/crm/f/microsoft-dynamics-crm-forum/216569/ms-crm-plugin-execution-pipeli

NEW QUESTION # 200
You need to reduce the number of Azure consumption API calls for User2.
Which markup segment should you use?

Answer: B

Explanation:
Scenario: User2 reports that Azure consumption for API calls has increased significantly to 100 calls per minute in the last month.
Example:
In the following example, the rate limit of 10 calls per 60 seconds is keyed by the caller IP address. After each policy execution, the remaining calls allowed in the time period are stored in the variable remainingCallsPerIP.
<policies>
<inbound>
<base />
<rate-limit-by-key calls="10"
renewal-period="60"
increment-condition="@(context.Response.StatusCode == 200)"
counter-key="@(context.Request.IpAddress)"
remaining-calls-variable-name="remainingCallsPerIP"/>
</inbound>
<outbound>
<base />
</outbound>
</policies>
Note: The rate-limit-by-key policy prevents API usage spikes on a per key basis by limiting the call rate to a specified number per a specified time period. The key can have an arbitrary string value and is typically provided using a policy expression. Optional increment condition can be added to specify which requests should be counted towards the limit. When this call rate is exceeded, the caller receives a 429 Too Many Requests response status code.
Reference:
https://docs.microsoft.com/en-us/azure/api-management/api-management-access-restriction-policies

NEW QUESTION # 201
You need to resolve the performance issue with the Total Billed customer plug-in.
In which order should you perform the actions? To answer, move all actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation:

1 - Attach the debugger to total billed customer time.
2 - Run the total billed customer time query.
3 - Correct the failing plug-in code and compile.
4 - Register and deploy the plug-in assembly.
5 - Unregister the old version,,,,,,,,
Reference:
https://docs.microsoft.com/en-us/dynamics365/customerengagement/on-premises/developer/register-deploy-plugins

NEW QUESTION # 202
......

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Bill Lee Bill Lee

Biography

Use PL-400 Exam Questions [2025]-Best Preparation Material

New PL-400 Test Objectives | PL-400 Dumps Collection

Microsoft Power Platform Developer Sample Questions (Q197-Q202):

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