Exams > Microsoft > PL-400: Microsoft Power Platform Developer
PL-400: Microsoft Power Platform Developer
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Question#1

A company manages capital equipment for an electric utility company. The company has a SQL Server database that contains maintenance records for the equipment.
Technicians who service the equipment use the Dynamics 365 Field Service mobile app on tablet devices to view scheduled assignments. Technicians use a canvas app to display the maintenance history for each piece of equipment and update the history.
Managers use a Power BI dashboard that displays Dynamics 365 Field Service and real-time maintenance data.
Due to increasing demand, managers must be able to work in the field as technicians.
You need to design a solution that allows the managers to work from one single screen.
What should you do?

  • A. Add the maintenance history app to the Field Service Mobile app.
  • B. Add the manager Power BI dashboard to the Field Service mobile app.
  • C. Create a new maintenance canvas app from within the Power BI management dashboard.
  • D. Add the maintenance history app to the Power BI dashboard.
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Answer: D
Power BI enables data insights and better decision-making, while Power Apps enables everyone to build and use apps that connect to business data. Using the
Power Apps visual, you can pass context-aware data to a canvas app, which updates in real time as you make changes to your report. Now, your app users can derive business insights and take actions from right within their Power BI reports and dashboards.
Reference:
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/powerapps-custom-visual

Question#2

HOTSPOT -
You work for a staffing company that helps employees fill temporary jobs. Available temporary jobs are categorized and listed on a secure area of the company's website.
The company wants to eliminate manual work that relates to job and candidate management. The company plans to invite employers with available jobs and job candidates to view jobs by sending personalized invitations. The company identifies the following requirements:
✑ Human resources team members from the staffing company must be able to access the jobs listing and post available positions.
✑ Employers seeking temporary employees must also be able to access the jobs listing and post available positions.
✑ Approved job candidates must be notified about new positions for which they are qualified.
✑ Approved job candidate must have an option to accept a job assignment directly from a notification.
You need to perform a gap analysis against the features and capabilities of the Power Platform.
Which features should you implement? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

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Answer:
Box 1: Custom self-service portal for both employers and job candidates
If you select an environment that contains customer engagement, you can create the following portals:
✑ Customer self-service portal: A customer self-service portal enables customers to access self-service knowledge, support resources, view the progress of their cases, and provide feedback.
✑ Partner portal: A partner portal allows every organization with resellers, distributors, suppliers, or partners to have real-time access to every stage of shared activities.
✑ Employee self-service portal: An employee self-service portal creates an efficient and well-informed workforce by streamlining common tasks and empowering every employee with a definitive source of knowledge.
Box 2: Model-driven app with push notifications
Compared to canvas apps, model-driven apps in PowerApps are based on underlying data ג€" specifically, the data stored in Common Data Service (CDS).
Box 3: Webform with target set to the job custom entity
Box 4: Configure a value for the Execute Workflow on Redeeming Contact option only.
Execute Workflow on Redeeming Contact: A workflow process to be executed when the invite is redeemed. The workflow will be passed the redeeming contact as the primary entity.
Box 5: Configure the value for the Assigned to Account option only.
Assign to Account: An account record to be associated as the redeeming contact's parent customer when the invite is redeemed.
Reference:
https://docs.microsoft.com/en-us/powerapps/maker/portals/portal-templates https://global.hitachi-solutions.com/blog/canvas-vs-model-driven-apps https://docs.microsoft.com/en-us/powerapps/maker/portals/configure/invite-contacts#invitation-attributes

Question#3

HOTSPOT -
You create a suite of Power Platform-based order management canvas apps for a bakery that has five retail stores. Each store uses a tablet device to manage inventory and process orders.
You need to make the following changes to the original order tracking app:
When an online order for delivery is received, send the order to the bakery that is located closest to the order destination.

✑ When an online order for pickup is received, require store staff to enter an estimated time in an app. Staff must prepare the order and then use the app to notify the customer when the order is ready.
✑ Allow the store manager to personalize the company's corporate weekly newsletter and add store-specific specials.
You must minimize the amount of custom code and configuration required to implement the solution.
What should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
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Answer:
Box 1: Power Automate flow -
Do you want to get the user's location whose location is closest to the current device, then use key is to use Bing Map connector.
The Bing Map connector is available in the following products and regions:

Box 2: New screen in an existing canvas app
Box 3: Power Automate flow triggered from an email button
Incorrect Answers:
UI flows brings Robotic Process Automation (RPA) capabilities to Power Automate. You can use UI flows to automate repetitive tasks in Windows and Web applications. UI flows records and plays back user interface actions (clicks, keyboard input, etc.)
Reference:
https://docs.microsoft.com/sv-se/connectors/bingmaps/

Question#4

A company has an application that provides API access. You plan to connect to the API from a canvas app by using a custom connector.
You need to request information from the API developers so that you can create the custom connector.
Which two types of files can you use? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

  • A. YAML
  • B. WSDL
  • C. OpenAPI definition
  • D. Postman collection
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Answer: CD
OpenAPI definitions or Postman collections can be used to describe a custom connector.
Reference:
https://docs.microsoft.com/en-us/connectors/custom-connectors/faq

Question#5

You plan to create a canvas app to manage large sets of records. Users will filter and sort the data.
You must implement delegation in the canvas app to mitigate potential performance issues.
You need to recommend data sources for the app.
Which two data sources should you recommend? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

  • A. SQL Server
  • B. Common Data Service
  • C. Azure Data Factory
  • D. Azure Table Storage
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Answer: AB
When you are creating reports from large data sources (perhaps millions of records), you want to minimize network traffic.
Working with large data sets requires using data sources and formulas that can be delegated. It's the only way to keep your app performing well and ensure users can access all the information they need. Delegation is supported for certain tabular data sources only.
These tabular data sources are the most popular, and they support delegation:
✑ Common Data Service
✑ SharePoint
✑ SQL Server
Reference:
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/delegation-overview

Question#6

You plan to populate records in a Microsoft Dataverse entity containing an option set field.
The source system has the label for the option set but not the corresponding integer value.
You are using a non .NET programming language.
You need to find the integer value for the option set.
What should you do?

  • A. Use Web API and use a PicklistAttibuteMetadata request.
  • B. Use the Organization service and execute a RetrieveOptionSetRequest request.
  • C. Use Web API and use an InsertOptionValue action.
  • D. Use the Organization service and execute a RetrieveAttributeRequest request.
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Answer: B
You can retrieve a global choice (option set) by name (label) using the RetrieveOptionSetRequest message.
Reference:
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/org-service/metadata-option-sets

Question#7

A travel company has a Common Data Service (CDS) environment.
The company requires the following:
✑ Custom entities that track which regions clients have traveled.
The dates their clients traveled to these regions.

You need to create the entities and relationships to meet the requirements.
Which three actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

  • A. Create a N:N relationship from Contact to the Region entity.
  • B. Create a 1:N relationship from the ContactRegion intersect entity and Region.
  • C. Create an intersect entity named ContactRegion and create 1:N relationships to Contact and Region.
  • D. On the main form for ContactRegion, add lookup fields for Contact and Region, and a date field for the visit date.
  • E. Create a 1:N relationship from Contact to the Region entity.
  • F. Create the Region entity.
  • G. On the main form for ContactRegion, add a sub-grid to view country information.
  • H. Create an intersect entity named ContactRegion and create N:1 relationships to Contact and Region.
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Answer: CDF
Need a Region entity, a intersect entity ContactRegion between Contact and Region, and a way to input region visits.

Question#8

HOTSPOT -
You are troubleshooting Power Apps solutions.
You need to determine the cause for the identified issues.
What is the root cause for each issue? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
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Answer:
Box 1: A canvas app in the first solution has errors.
Box 2: The code uses the following rule: web-use-strict-mode
web-use-strict-mode is able to throw a SyntaxError before the script is executing.
Example:
The reason is JavaScript lets you compare different variable types but this can have unexpected results, so by using the strict === it compares the same type and won't have unexpected results this gets a warning entity.field == "Line1"
Incorrect Answers:
web-avoid-eval: The eval() function evaluates JavaScript code represented as a string. web-avoid-modals: Avoid using modal dialogs. web-remove-debug-script: Avoid including debug script in non-development environments.
Reference:
https://docs.microsoft.com/en-us/powerapps/maker/common-data-service/common-issues-resolutions-solution-checker

Question#9

A company uses Common Data Service rollup fields to calculate insurance exposure and risk profiles for customers.
Users report that the system does not update values for the rollup fields when new insurance policies are written.
You need to recalculate the value of the rollup fields immediately after a policy is created.
What should you do?

  • A. Create new fields on the customer entity for insurance exposure and risk. Write a workflow process that is triggered when a new policy record is created to calculate the sum of values from policy records.
  • B. Update the Mass Calculate Rollup Field job to trigger when a new policy record is created.
  • C. Change the frequency of the Calculate Rollup Field recurring job from every hour to every five minutes.
  • D. Create a plug-in that uses the CalculateRollupFieldRequest method for the rollup field. Configure a step on the Create event for the policy entity for this plug-in.
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Answer: D
In case you want to calculate Rollup field immediately whenever child record gets created, updated or deleted, you can write custom C# plugin or custom workflow activity and use SDK message ג€CalculateRollupFieldRequestג€.
Incorrect:
Not B: Mass Calculate Rollup Field ג€" This job is created per Rollup field and runs when you create or update Rollup field. By default, job runs in 12 hours after you create or update Rollup field. You can adjust start time of this job to make sure job runs during non-operational hours
Reference:
https://sachinbansal.blog/2018/05/07/dynamics-365-rollup-fields-important-points/

Question#10

The communication department for a company plans to add a publicly accessible survey page to the company's public website.
You must add the new survey page to the company's public website and capture data from the page to a Microsoft Dataverse environment.
Explicit user credentials must not be required to write survey data to Dataverse.
You need to implement authentication.
Which authentication mechanism should you implement?

  • A. ADFS
  • B. Azure AD Conditional Access
  • C. Azure guest account
  • D. Client secret
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Answer: C
Canvas apps can be shared with guest users of an Azure Active Directory (Azure AD) tenant. This enables inviting external business partners, contractors, and third parties to run your company's canvas apps.
Reference:
https://docs.microsoft.com/en-us/power-apps/maker/canvas-apps/share-app-guests

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