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Exam Code: PL-400

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Corresponding Certification: Microsoft Certified: Power Platform Developer Associate

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Microsoft PL-400 Practice Test 23

Question 220

At the Foxbridge manufacturing group during a controlled pilot, a user changes a custom field control but the hosting form never receives the new bound value. The project team must verify a scoped fix before rollout. Which ongoing engineering control would most directly reduce recurrence?

  1. Test the bound property contract after control changes
  2. Check environment variable values and data-source references before deployment
  3. Version manifest changes and verify host compatibility
  4. Keep initialization and data refresh responsibilities separate

Explanation

Correct Answer

A:

This routine prevents recurrence: test the bound property contract after control changes. It targets the recurring risk created because the framework was not notified about an updated property output. In the Foxbridge manufacturing group, assess this against the documented pcf bound output scenario.

Incorrect Answers

B:

That safeguard is appropriate for maintaining code app environment-variable reference. It would not primarily prevent the reported failure, for which the relevant control is to test the bound property contract after control changes. For case R082-PL400-CASE-0055, the decisive context is the 1 deployment setting at the Foxbridge manufacturing group.

C:

This monitoring or review practice targets pcf manifest; the better ongoing protection for this case is to test the bound property contract after control changes. For case R082-PL400-CASE-0055, the decisive context is the 1 deployment setting at the Foxbridge manufacturing group.

D:

“Keep initialization and data refresh responsibilities separate” checks a different ongoing risk rather than the reported failure: at the Foxbridge manufacturing group during a controlled pilot, a user changes a custom field control but the hosting form never receives the new bound value. The project team must verify a scoped fix before rollout. The relevant mechanism is the framework was not notified about an updated property output. The directly matched preventive control is “Test the bound property contract after control changes”.

Question 221

At the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. Which implementation or corrective action most directly addresses the reported condition?

  1. Use the supported dataset paging interface rather than assuming all rows are loaded
  2. Instrument supported code app events and exceptions with Application Insights correlation
  3. Call notifyOutputChanged and return the bound value from getOutputs
  4. Handle incoming property changes within updateView and rerender accordingly

Explanation

Correct Answer

C:

This directly changes the failing design: call notifyOutputChanged and return the bound value from getOutputs. The case identifies that the framework was not notified about an updated property output; success can be demonstrated when changing the control updates the host-bound attribute and save payload. In the Foxbridge municipal services, assess this against the documented pcf bound output scenario.

Incorrect Answers

A:

The proposed action would instead address pcf dataset pagination. The scenario here is different: the framework was not notified about an updated property output. Choosing that remedy would leave the stated defect untreated; call notifyOutputChanged and return the bound value from getOutputs addresses it directly. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

B:

“Instrument supported code app events and exceptions with Application Insights correlation” would address a different implementation objective; the stated problem is at the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. The actual control boundary is the framework was not notified about an updated property output. The directly responsive action is “Call notifyOutputChanged and return the bound value from getOutputs”.

D:

The proposed action would instead address pcf update lifecycle. The scenario here is different: the framework was not notified about an updated property output. Choosing that remedy would leave the stated defect untreated; call notifyOutputChanged and return the bound value from getOutputs addresses it directly. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

Question 222

At the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. Which technical explanation best accounts for the observed problem?

  1. The component misses updates to its input property bag
  2. The framework was not notified about an updated property output
  3. Agent calls must honor configured authentication and connector permissions
  4. The manifest defines the public contract exposed to hosts

Explanation

Correct Answer

B:

This is the cause indicated by the reported symptoms: the framework was not notified about an updated property output. The corrective design is to call notifyOutputChanged and return the bound value from getOutputs, not to change unrelated components. In the Foxbridge municipal services, assess this against the documented pcf bound output scenario.

Incorrect Answers

A:

“The component misses updates to its input property bag” is not the controlling explanation for at the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is the framework was not notified about an updated property output. The matching answer is “The framework was not notified about an updated property output”.

C:

This explanation corresponds to code app agent invocation rather than the symptoms in the case. The controlling cause here is that the framework was not notified about an updated property output; the unrelated mechanism does not account for the observed behavior. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

D:

“The manifest defines the public contract exposed to hosts” is not the controlling explanation for at the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is the framework was not notified about an updated property output. The matching answer is “The framework was not notified about an updated property output”.

Question 223

At the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. What outcome would most convincingly confirm that the issue is resolved?

  1. The component renders records when updateView receives populated context
  2. Repeated navigation does not accumulate duplicate listeners
  3. Authorized users obtain agent responses without cross-user data exposure
  4. Changing the control updates the host-bound attribute and save payload

Explanation

Correct Answer

D:

The strongest completion signal is that changing the control updates the host-bound attribute and save payload. It shows the diagnosed issue—the framework was not notified about an updated property output—has been addressed, rather than merely hiding the symptom. In the Foxbridge municipal services, assess this against the documented pcf bound output scenario.

Incorrect Answers

A:

The test is directed at pcf initialization, not the reported failure mechanism. Successful correction here requires demonstrating that changing the control updates the host-bound attribute and save payload. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

B:

Evidence that “Repeated navigation does not accumulate duplicate listeners” occurred would not by itself establish resolution of the reported problem: at the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. The specific reason is the framework was not notified about an updated property output. The applicable verification is “Changing the control updates the host-bound attribute and save payload”.

C:

Although useful when testing code app agent invocation, this observation is not the direct acceptance test for the stated change. Look instead for changing the control updates the host-bound attribute and save payload. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

Question 224

At the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. Which ongoing engineering control would most directly reduce recurrence?

  1. Add tests for null and changed inputs in updateView
  2. Retest command formulas whenever the command bar is customized
  3. Keep initialization and data refresh responsibilities separate
  4. Test the bound property contract after control changes

Explanation

Correct Answer

D:

Make future changes safer by ensuring teams test the bound property contract after control changes. The control belongs with the original correction to call notifyOutputChanged and return the bound value from getOutputs. In the Foxbridge municipal services, assess this against the documented pcf bound output scenario.

Incorrect Answers

A:

That safeguard is appropriate for maintaining pcf update lifecycle. It would not primarily prevent the reported failure, for which the relevant control is to test the bound property contract after control changes. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

B:

This monitoring or review practice targets command action selection; the better ongoing protection for this case is to test the bound property contract after control changes. For case R082-PL400-CASE-0056, the decisive context is the 2 deployment setting at the Foxbridge municipal services.

C:

“Keep initialization and data refresh responsibilities separate” checks a different ongoing risk rather than the reported failure: at the Foxbridge municipal services after a wider deployment, a user changes a custom field control but the hosting form never receives the new bound value. The operations team needs a supportable remediation with evidence for the handover. The relevant mechanism is the framework was not notified about an updated property output. The directly matched preventive control is “Test the bound property contract after control changes”.

Question 225

At the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. Which implementation or corrective action most directly addresses the reported condition?

  1. Call notifyOutputChanged and return the bound value from getOutputs
  2. Release listeners and external resources in the PCF destroy method
  3. Use supported Client API navigation or dialog methods instead of direct location replacement
  4. Use the supported dataset paging interface rather than assuming all rows are loaded

Explanation

Correct Answer

B:

This directly changes the failing design: release listeners and external resources in the PCF destroy method. The case identifies that detached controls can retain event handlers and memory allocations; success can be demonstrated when repeated navigation does not accumulate duplicate listeners. In the Foxbridge community college, assess this against the documented pcf cleanup scenario.

Incorrect Answers

A:

“Call notifyOutputChanged and return the bound value from getOutputs” would address a different implementation objective; the stated problem is at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The actual control boundary is detached controls can retain event handlers and memory allocations. The directly responsive action is “Release listeners and external resources in the PCF destroy method”.

C:

The proposed action would instead address navigation and dialogs. The scenario here is different: detached controls can retain event handlers and memory allocations. Choosing that remedy would leave the stated defect untreated; release listeners and external resources in the PCF destroy method addresses it directly. For case R082-PL400-CASE-0057, the decisive context is the 1 deployment setting at the Foxbridge community college.

D:

“Use the supported dataset paging interface rather than assuming all rows are loaded” would address a different implementation objective; the stated problem is at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The actual control boundary is detached controls can retain event handlers and memory allocations. The directly responsive action is “Release listeners and external resources in the PCF destroy method”.

Question 226

At the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. Which technical explanation best accounts for the observed problem?

  1. Detached controls can retain event handlers and memory allocations
  2. The dataset runtime can page result sets independently of the component
  3. Hard-coded dataset IDs are not environment-portable
  4. The component misses updates to its input property bag

Explanation

Correct Answer

A:

This is the cause indicated by the reported symptoms: detached controls can retain event handlers and memory allocations. The corrective design is to release listeners and external resources in the PCF destroy method, not to change unrelated components. In the Foxbridge community college, assess this against the documented pcf cleanup scenario.

Incorrect Answers

B:

This explanation corresponds to pcf dataset pagination rather than the symptoms in the case. The controlling cause here is that detached controls can retain event handlers and memory allocations; the unrelated mechanism does not account for the observed behavior. For case R082-PL400-CASE-0057, the decisive context is the 1 deployment setting at the Foxbridge community college.

C:

“Hard-coded dataset IDs are not environment-portable” is not the controlling explanation for at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The cited causal relationship is detached controls can retain event handlers and memory allocations. The matching answer is “Detached controls can retain event handlers and memory allocations”.

D:

“The component misses updates to its input property bag” is not the controlling explanation for at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The cited causal relationship is detached controls can retain event handlers and memory allocations. The matching answer is “Detached controls can retain event handlers and memory allocations”.

Question 227

At the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. What outcome would most convincingly confirm that the issue is resolved?

  1. Changing the control updates the host-bound attribute and save payload
  2. A failing browser request is identified alongside a corresponding trace
  3. Repeated navigation does not accumulate duplicate listeners
  4. A clean target environment loads the packaged component

Explanation

Correct Answer

C:

The strongest completion signal is that repeated navigation does not accumulate duplicate listeners. It shows the diagnosed issue—detached controls can retain event handlers and memory allocations—has been addressed, rather than merely hiding the symptom. In the Foxbridge community college, assess this against the documented pcf cleanup scenario.

Incorrect Answers

A:

Evidence that “Changing the control updates the host-bound attribute and save payload” occurred would not by itself establish resolution of the reported problem: at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The specific reason is detached controls can retain event handlers and memory allocations. The applicable verification is “Repeated navigation does not accumulate duplicate listeners”.

B:

Although useful when testing browser debug strategy, this observation is not the direct acceptance test for the stated change. Look instead for repeated navigation does not accumulate duplicate listeners. For case R082-PL400-CASE-0057, the decisive context is the 1 deployment setting at the Foxbridge community college.

D:

Evidence that “A clean target environment loads the packaged component” occurred would not by itself establish resolution of the reported problem: at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The specific reason is detached controls can retain event handlers and memory allocations. The applicable verification is “Repeated navigation does not accumulate duplicate listeners”.

Question 228

At the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. Which ongoing engineering control would most directly reduce recurrence?

  1. Keep repeatable client trace collection steps in the support runbook
  2. Validate PCF package versions during ALM promotion
  3. Run mount-unmount resource leak checks during component testing
  4. Test the bound property contract after control changes

Explanation

Correct Answer

C:

Make future changes safer by ensuring teams run mount-unmount resource leak checks during component testing. The control belongs with the original correction to release listeners and external resources in the PCF destroy method. In the Foxbridge community college, assess this against the documented pcf cleanup scenario.

Incorrect Answers

A:

This monitoring or review practice targets browser debug strategy; the better ongoing protection for this case is to run mount-unmount resource leak checks during component testing. For case R082-PL400-CASE-0057, the decisive context is the 1 deployment setting at the Foxbridge community college.

B:

“Validate PCF package versions during ALM promotion” checks a different ongoing risk rather than the reported failure: at the Foxbridge community college during a controlled pilot, a control registers global event listeners and leaves them active after form navigation. The project team must verify a scoped fix before rollout. The relevant mechanism is detached controls can retain event handlers and memory allocations. The directly matched preventive control is “Run mount-unmount resource leak checks during component testing”.

D:

This monitoring or review practice targets pcf bound output; the better ongoing protection for this case is to run mount-unmount resource leak checks during component testing. For case R082-PL400-CASE-0057, the decisive context is the 1 deployment setting at the Foxbridge community college.

Question 229

At the Foxbridge retail logistics hub after a wider deployment, a control registers global event listeners and leaves them active after form navigation. The operations team needs a supportable remediation with evidence for the handover. Which implementation or corrective action most directly addresses the reported condition?

  1. Publish and share the supported code app and verify underlying connector and Dataverse permissions
  2. Call notifyOutputChanged and return the bound value from getOutputs
  3. Initialize resources in init but read and render datasets from updateView
  4. Release listeners and external resources in the PCF destroy method

Explanation

Correct Answer

D:

This directly changes the failing design: release listeners and external resources in the PCF destroy method. The case identifies that detached controls can retain event handlers and memory allocations; success can be demonstrated when repeated navigation does not accumulate duplicate listeners. In the Foxbridge retail logistics hub, assess this against the documented pcf cleanup scenario.

Incorrect Answers

A:

The alternative concerns code app publishing and sharing, not this case’s documented failure. The correct response targets detached controls can retain event handlers and memory allocations by using release listeners and external resources in the PCF destroy method. For case R082-PL400-CASE-0058, the decisive context is the 2 deployment setting at the Foxbridge retail logistics hub.

B:

The proposed action would instead address pcf bound output. The scenario here is different: detached controls can retain event handlers and memory allocations. Choosing that remedy would leave the stated defect untreated; release listeners and external resources in the PCF destroy method addresses it directly. For case R082-PL400-CASE-0058, the decisive context is the 2 deployment setting at the Foxbridge retail logistics hub.

C:

“Initialize resources in init but read and render datasets from updateView” would address a different implementation objective; the stated problem is at the Foxbridge retail logistics hub after a wider deployment, a control registers global event listeners and leaves them active after form navigation. The operations team needs a supportable remediation with evidence for the handover. The actual control boundary is detached controls can retain event handlers and memory allocations. The directly responsive action is “Release listeners and external resources in the PCF destroy method”.

Question 230

At the Foxbridge retail logistics hub after a wider deployment, a control registers global event listeners and leaves them active after form navigation. The operations team needs a supportable remediation with evidence for the handover. Which technical explanation best accounts for the observed problem?

  1. The app source code references a connector that was never configured for the app
  2. The manifest defines the public contract exposed to hosts
  3. Local development output alone is not a deployable solution asset
  4. Detached controls can retain event handlers and memory allocations

Explanation

Correct Answer

D:

The observed behavior follows from the fact that detached controls can retain event handlers and memory allocations. A focused repair is to release listeners and external resources in the PCF destroy method, with repeated navigation does not accumulate duplicate listeners as the proposed proof. In the Foxbridge retail logistics hub, assess this against the documented pcf cleanup scenario.

Incorrect Answers

A:

This explanation corresponds to code app connector binding rather than the symptoms in the case. The controlling cause here is that detached controls can retain event handlers and memory allocations; the unrelated mechanism does not account for the observed behavior. For case R082-PL400-CASE-0058, the decisive context is the 2 deployment setting at the Foxbridge retail logistics hub.

B:

“The manifest defines the public contract exposed to hosts” is not the controlling explanation for at the Foxbridge retail logistics hub after a wider deployment, a control registers global event listeners and leaves them active after form navigation. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is detached controls can retain event handlers and memory allocations. The matching answer is “Detached controls can retain event handlers and memory allocations”.

C:

“Local development output alone is not a deployable solution asset” is not the controlling explanation for at the Foxbridge retail logistics hub after a wider deployment, a control registers global event listeners and leaves them active after form navigation. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is detached controls can retain event handlers and memory allocations. The matching answer is “Detached controls can retain event handlers and memory allocations”.