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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 Power Platform Developer (PL-400) Practice Tests

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Microsoft PL-400 Practice Test 17

Question 160

At the Dunwell housing nonprofit after a wider deployment, a model-driven form recalculates a fee only on the first edit because the event handler is attached inconsistently. The operations team needs a supportable remediation with evidence for the handover. Which ongoing engineering control would most directly reduce recurrence?

  1. Inspect form event registrations after form customizations
  2. Test rejection paths and network latency in client-script handlers
  3. Keep repeatable client trace collection steps in the support runbook
  4. Review supported Client API methods before browser modernization

Explanation

Correct Answer

A:

This routine prevents recurrence: inspect form event registrations after form customizations. It targets the recurring risk created because the event lifecycle is not reliably configured for every supported form state. In the Dunwell housing nonprofit, assess this against the documented onchange handler registration scenario.

Incorrect Answers

B:

That safeguard is appropriate for maintaining async data refresh. It would not primarily prevent the reported failure, for which the relevant control is to inspect form event registrations after form customizations. For case R082-PL400-CASE-0040, the decisive context is the 2 deployment setting at the Dunwell housing nonprofit.

C:

This monitoring or review practice targets browser debug strategy; the better ongoing protection for this case is to inspect form event registrations after form customizations. For case R082-PL400-CASE-0040, the decisive context is the 2 deployment setting at the Dunwell housing nonprofit.

D:

“Review supported Client API methods before browser modernization” checks a different ongoing risk rather than the reported failure: at the Dunwell housing nonprofit after a wider deployment, a model-driven form recalculates a fee only on the first edit because the event handler is attached inconsistently. The operations team needs a supportable remediation with evidence for the handover. The relevant mechanism is the event lifecycle is not reliably configured for every supported form state. The directly matched preventive control is “Inspect form event registrations after form customizations”.

Question 161

At the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. Which implementation or corrective action most directly addresses the reported condition?

  1. Use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise
  2. Use supported Power Fx commanding for the straightforward command behavior
  3. Handle incoming property changes within updateView and rerender accordingly
  4. Await the supported Web API operation before showing final success and refreshing data

Explanation

Correct Answer

A:

The safest first response is use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. It addresses the stated mechanism, namely that blocking synchronous requests degrade UX and bypass supported client integration patterns. The team should accept the fix only when the form remains responsive and displays the retrieved related rows. In the Eastmere regional clinic, assess this against the documented web api in client script scenario.

Incorrect Answers

B:

“Use supported Power Fx commanding for the straightforward command behavior” would address a different implementation objective; the stated problem is at the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. The actual control boundary is blocking synchronous requests degrade UX and bypass supported client integration patterns. The directly responsive action is “Use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise”.

C:

The alternative concerns pcf update lifecycle, not this case’s documented failure. The correct response targets blocking synchronous requests degrade UX and bypass supported client integration patterns by using use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. For case R082-PL400-CASE-0041, the decisive context is the 1 deployment setting at the Eastmere regional clinic.

D:

The proposed action would instead address async data refresh. The scenario here is different: blocking synchronous requests degrade UX and bypass supported client integration patterns. Choosing that remedy would leave the stated defect untreated; use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise addresses it directly. For case R082-PL400-CASE-0041, the decisive context is the 1 deployment setting at the Eastmere regional clinic.

Question 162

At the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. Which technical explanation best accounts for the observed problem?

  1. The event lifecycle is not reliably configured for every supported form state
  2. Detached controls can retain event handlers and memory allocations
  3. Blocking synchronous requests degrade UX and bypass supported client integration patterns
  4. Untrusted HTML injection exposes a client-side rendering risk

Explanation

Correct Answer

C:

The observed behavior follows from the fact that blocking synchronous requests degrade UX and bypass supported client integration patterns. A focused repair is to use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise, with the form remains responsive and displays the retrieved related rows as the proposed proof. In the Eastmere regional clinic, assess this against the documented web api in client script scenario.

Incorrect Answers

A:

“The event lifecycle is not reliably configured for every supported form state” is not the controlling explanation for at the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. The cited causal relationship is blocking synchronous requests degrade UX and bypass supported client integration patterns. The matching answer is “Blocking synchronous requests degrade UX and bypass supported client integration patterns”.

B:

“Detached controls can retain event handlers and memory allocations” is not the controlling explanation for at the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. The cited causal relationship is blocking synchronous requests degrade UX and bypass supported client integration patterns. The matching answer is “Blocking synchronous requests degrade UX and bypass supported client integration patterns”.

D:

“Untrusted HTML injection exposes a client-side rendering risk” is not the controlling explanation for at the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. The cited causal relationship is blocking synchronous requests degrade UX and bypass supported client integration patterns. The matching answer is “Blocking synchronous requests degrade UX and bypass supported client integration patterns”.

Question 163

At the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. What outcome would most convincingly confirm that the issue is resolved?

  1. The handler reads the correct form attribute in both normal and dialog presentations
  2. A success message appears only after server confirmation; failures show an error
  3. A test coworker can open the app and access only authorized rows
  4. The form remains responsive and displays the retrieved related rows

Explanation

Correct Answer

D:

The strongest completion signal is that the form remains responsive and displays the retrieved related rows. It shows the diagnosed issue—blocking synchronous requests degrade UX and bypass supported client integration patterns—has been addressed, rather than merely hiding the symptom. In the Eastmere regional clinic, assess this against the documented web api in client script scenario.

Incorrect Answers

A:

The test is directed at model-driven form context, not the reported failure mechanism. Successful correction here requires demonstrating that the form remains responsive and displays the retrieved related rows. For case R082-PL400-CASE-0041, the decisive context is the 1 deployment setting at the Eastmere regional clinic.

B:

Evidence that “A success message appears only after server confirmation; failures show an error” occurred would not by itself establish resolution of the reported problem: at the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. The specific reason is blocking synchronous requests degrade UX and bypass supported client integration patterns. The applicable verification is “The form remains responsive and displays the retrieved related rows”.

C:

Although useful when testing code app publishing and sharing, this observation is not the direct acceptance test for the stated change. Look instead for the form remains responsive and displays the retrieved related rows. For case R082-PL400-CASE-0041, the decisive context is the 1 deployment setting at the Eastmere regional clinic.

Question 164

At the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. Which ongoing engineering control would most directly reduce recurrence?

  1. Retest agent access scope whenever tools are added
  2. Test rejection paths and network latency in client-script handlers
  3. Exercise navigation regression tests on supported model-driven clients
  4. Review supported Client API methods before browser modernization

Explanation

Correct Answer

D:

Make future changes safer by ensuring teams review supported Client API methods before browser modernization. The control belongs with the original correction to use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. In the Eastmere regional clinic, assess this against the documented web api in client script scenario.

Incorrect Answers

A:

That safeguard is appropriate for maintaining code app agent invocation. It would not primarily prevent the reported failure, for which the relevant control is to review supported Client API methods before browser modernization. For case R082-PL400-CASE-0041, the decisive context is the 1 deployment setting at the Eastmere regional clinic.

B:

This monitoring or review practice targets async data refresh; the better ongoing protection for this case is to review supported Client API methods before browser modernization. For case R082-PL400-CASE-0041, the decisive context is the 1 deployment setting at the Eastmere regional clinic.

C:

“Exercise navigation regression tests on supported model-driven clients” checks a different ongoing risk rather than the reported failure: at the Eastmere regional clinic during a controlled pilot, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The project team must verify a scoped fix before rollout. The relevant mechanism is blocking synchronous requests degrade UX and bypass supported client integration patterns. The directly matched preventive control is “Review supported Client API methods before browser modernization”.

Question 165

At the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. 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 supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise
  2. Use the execution context to obtain the active formContext and supported Client API
  3. Review code app CSP settings and allow only the specific necessary trusted origins
  4. Use supported Client API navigation or dialog methods instead of direct location replacement

Explanation

Correct Answer

A:

The recommended intervention is use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. The distinguishing cause is that blocking synchronous requests degrade UX and bypass supported client integration patterns. In this particular deployment, the follow-up check is that the form remains responsive and displays the retrieved related rows. In the Eastmere utility cooperative, assess this against the documented web api in client script scenario.

Incorrect Answers

B:

The alternative concerns model-driven form context, not this case’s documented failure. The correct response targets blocking synchronous requests degrade UX and bypass supported client integration patterns by using use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. For case R082-PL400-CASE-0042, the decisive context is the 2 deployment setting at the Eastmere utility cooperative.

C:

The proposed action would instead address content security policy. The scenario here is different: blocking synchronous requests degrade UX and bypass supported client integration patterns. Choosing that remedy would leave the stated defect untreated; use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise addresses it directly. For case R082-PL400-CASE-0042, the decisive context is the 2 deployment setting at the Eastmere utility cooperative.

D:

“Use supported Client API navigation or dialog methods instead of direct location replacement” would address a different implementation objective; the stated problem is at the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. The actual control boundary is blocking synchronous requests degrade UX and bypass supported client integration patterns. The directly responsive action is “Use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise”.

Question 166

At the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. Which technical explanation best accounts for the observed problem?

  1. Direct browser navigation bypasses the app navigation contract
  2. Blocking synchronous requests degrade UX and bypass supported client integration patterns
  3. Hard-coded dataset IDs are not environment-portable
  4. The event lifecycle is not reliably configured for every supported form state

Explanation

Correct Answer

B:

The observed behavior follows from the fact that blocking synchronous requests degrade UX and bypass supported client integration patterns. A focused repair is to use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise, with the form remains responsive and displays the retrieved related rows as the proposed proof. In the Eastmere utility cooperative, assess this against the documented web api in client script scenario.

Incorrect Answers

A:

“Direct browser navigation bypasses the app navigation contract” is not the controlling explanation for at the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is blocking synchronous requests degrade UX and bypass supported client integration patterns. The matching answer is “Blocking synchronous requests degrade UX and bypass supported client integration patterns”.

C:

“Hard-coded dataset IDs are not environment-portable” is not the controlling explanation for at the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is blocking synchronous requests degrade UX and bypass supported client integration patterns. The matching answer is “Blocking synchronous requests degrade UX and bypass supported client integration patterns”.

D:

“The event lifecycle is not reliably configured for every supported form state” is not the controlling explanation for at the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. The cited causal relationship is blocking synchronous requests degrade UX and bypass supported client integration patterns. The matching answer is “Blocking synchronous requests degrade UX and bypass supported client integration patterns”.

Question 167

At the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. What outcome would most convincingly confirm that the issue is resolved?

  1. A success message appears only after server confirmation; failures show an error
  2. The handler reads the correct form attribute in both normal and dialog presentations
  3. A failing browser request is identified alongside a corresponding trace
  4. The form remains responsive and displays the retrieved related rows

Explanation

Correct Answer

D:

The implementation should be accepted when the form remains responsive and displays the retrieved related rows. That result specifically exercises the remediation to use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. In the Eastmere utility cooperative, assess this against the documented web api in client script scenario.

Incorrect Answers

A:

Evidence that “A success message appears only after server confirmation; failures show an error” occurred would not by itself establish resolution of the reported problem: at the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. The specific reason is blocking synchronous requests degrade UX and bypass supported client integration patterns. The applicable verification is “The form remains responsive and displays the retrieved related rows”.

B:

Although useful when testing model-driven form context, this observation is not the direct acceptance test for the stated change. Look instead for the form remains responsive and displays the retrieved related rows. For case R082-PL400-CASE-0042, the decisive context is the 2 deployment setting at the Eastmere utility cooperative.

C:

The test is directed at browser debug strategy, not the reported failure mechanism. Successful correction here requires demonstrating that the form remains responsive and displays the retrieved related rows. For case R082-PL400-CASE-0042, the decisive context is the 2 deployment setting at the Eastmere utility cooperative.

Question 168

At the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. Which ongoing engineering control would most directly reduce recurrence?

  1. Audit allowed origins and remove unused hosts periodically
  2. Inspect form event registrations after form customizations
  3. Review supported Client API methods before browser modernization
  4. Retest command formulas whenever the command bar is customized

Explanation

Correct Answer

C:

Make future changes safer by ensuring teams review supported Client API methods before browser modernization. The control belongs with the original correction to use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise. In the Eastmere utility cooperative, assess this against the documented web api in client script scenario.

Incorrect Answers

A:

This monitoring or review practice targets content security policy; the better ongoing protection for this case is to review supported Client API methods before browser modernization. For case R082-PL400-CASE-0042, the decisive context is the 2 deployment setting at the Eastmere utility cooperative.

B:

“Inspect form event registrations after form customizations” checks a different ongoing risk rather than the reported failure: at the Eastmere utility cooperative after a wider deployment, a form JavaScript function uses a deprecated synchronous browser request to retrieve related Dataverse rows. The operations team needs a supportable remediation with evidence for the handover. The relevant mechanism is blocking synchronous requests degrade UX and bypass supported client integration patterns. The directly matched preventive control is “Review supported Client API methods before browser modernization”.

D:

This monitoring or review practice targets command action selection; the better ongoing protection for this case is to review supported Client API methods before browser modernization. For case R082-PL400-CASE-0042, the decisive context is the 2 deployment setting at the Eastmere utility cooperative.

Question 169

At the Eastmere research institute during a controlled pilot, a model-driven app command needs a simple formula-driven visibility condition and action. The project team must verify a scoped fix before rollout. 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. Use supported Power Fx commanding for the straightforward command behavior
  3. Use supported Client API navigation or dialog methods instead of direct location replacement
  4. Use supported asynchronous Xrm.WebApi retrieval methods and handle the returned promise

Explanation

Correct Answer

B:

The safest first response is use supported Power Fx commanding for the straightforward command behavior. It addresses the stated mechanism, namely that custom JavaScript adds overhead where supported declarative commanding is sufficient. The team should accept the fix only when the command visibility and action respond correctly to the row state. In the Eastmere research institute, assess this against the documented command action selection scenario.

Incorrect Answers

A:

The alternative concerns pcf dataset pagination, not this case’s documented failure. The correct response targets custom JavaScript adds overhead where supported declarative commanding is sufficient by using use supported Power Fx commanding for the straightforward command behavior. For case R082-PL400-CASE-0043, the decisive context is the 1 deployment setting at the Eastmere research institute.

C:

“Use supported Client API navigation or dialog methods instead of direct location replacement” would address a different implementation objective; the stated problem is at the Eastmere research institute during a controlled pilot, a model-driven app command needs a simple formula-driven visibility condition and action. The project team must verify a scoped fix before rollout. The actual control boundary is custom JavaScript adds overhead where supported declarative commanding is sufficient. The directly responsive action is “Use supported Power Fx commanding for the straightforward command behavior”.

D:

The alternative concerns web api in client script, not this case’s documented failure. The correct response targets custom JavaScript adds overhead where supported declarative commanding is sufficient by using use supported Power Fx commanding for the straightforward command behavior. For case R082-PL400-CASE-0043, the decisive context is the 1 deployment setting at the Eastmere research institute.

Question 170

At the Eastmere research institute during a controlled pilot, a model-driven app command needs a simple formula-driven visibility condition and action. The project team must verify a scoped fix before rollout. Which technical explanation best accounts for the observed problem?

  1. Duplicated client updates bypass an established server-side operation contract
  2. Untrusted HTML injection exposes a client-side rendering risk
  3. Custom JavaScript adds overhead where supported declarative commanding is sufficient
  4. The event lifecycle is not reliably configured for every supported form state

Explanation

Correct Answer

C:

This is the cause indicated by the reported symptoms: custom JavaScript adds overhead where supported declarative commanding is sufficient. The corrective design is to use supported Power Fx commanding for the straightforward command behavior, not to change unrelated components. In the Eastmere research institute, assess this against the documented command action selection scenario.

Incorrect Answers

A:

This explanation corresponds to code app dataverse action rather than the symptoms in the case. The controlling cause here is that custom JavaScript adds overhead where supported declarative commanding is sufficient; the unrelated mechanism does not account for the observed behavior. For case R082-PL400-CASE-0043, the decisive context is the 1 deployment setting at the Eastmere research institute.

B:

“Untrusted HTML injection exposes a client-side rendering risk” is not the controlling explanation for at the Eastmere research institute during a controlled pilot, a model-driven app command needs a simple formula-driven visibility condition and action. The project team must verify a scoped fix before rollout. The cited causal relationship is custom JavaScript adds overhead where supported declarative commanding is sufficient. The matching answer is “Custom JavaScript adds overhead where supported declarative commanding is sufficient”.

D:

This explanation corresponds to onchange handler registration rather than the symptoms in the case. The controlling cause here is that custom JavaScript adds overhead where supported declarative commanding is sufficient; the unrelated mechanism does not account for the observed behavior. For case R082-PL400-CASE-0043, the decisive context is the 1 deployment setting at the Eastmere research institute.