Two processes update the same account record's credit limit. The business requires that the last update wins, but the update must be based on the current value. What is the simplest way to ensure consistency?

Use a transaction that locks the record

Use the Organization service's UpdateRequest with a concurrency token

Use pessimistic locking by retrieving the record with a lock

Use optimistic concurrency with ETags and handle the conflict by re-reading and retrying

Which mechanism in Dataverse ensures that a record is not modified by another user between the time it is retrieved and updated?

Optimistic concurrency using a version number

Using the If-Match header with a timestamp

A custom API operation must update a parent account and create two child contacts. If any operation fails, none of the changes should be saved. What is the most efficient way to implement this using the Organization service?

Use ExecuteMultipleRequest with ContinueOnError set to false

Use ExecuteTransactionRequest to run all three operations in one transaction

Perform the update first, then create the contacts, and delete them if the second fails

Create the contacts first, then update the account, and rely on the system to roll back

Which OAuth 2.0 grant type is commonly used for server-to-server (daemon) applications that need to access Dataverse without user interaction?

Resource owner password credentials grant

A company runs a nightly integration that imports 5,000 records into Dataverse using the Web API. The process occasionally fails with HTTP 429 responses. The team wants to minimize failures without adding significant complexity. What should you implement?

A retry policy with exponential backoff that respects the Retry-After header

Increase the timeout on each HTTP request to 10 minutes

A fixed-interval retry policy that retries every 5 seconds up to 10 times

Switch from the Web API to the Organization service to avoid rate limits

Microsoft Certified:Power Platform Developer Associate

Domain 5Objective 3

Use Platform APIs PL-400 Practice Questions (Page 1)

Part of the Extend the platform domain, which accounts for 30–35% of the PL-400 exam. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~12–23 in this domain), expect 2–5 from this objective — we provide 42 practice questions to prepare you well beyond it. (estimate)

42questions here

9free pages

8concepts

30–35%of the exam

Questions 1–5

1application · medium
Two processes update the same account record's credit limit. The business requires that the last update wins, but the update must be based on the current value. What is the simplest way to ensure consistency?
Select an answer first
2foundation · easy
Which mechanism in Dataverse ensures that a record is not modified by another user between the time it is retrieved and updated?
Select an answer first
3application · medium
A custom API operation must update a parent account and create two child contacts. If any operation fails, none of the changes should be saved. What is the most efficient way to implement this using the Organization service?
Select an answer first
4foundation · easy
Which OAuth 2.0 grant type is commonly used for server-to-server (daemon) applications that need to access Dataverse without user interaction?
Select an answer first
5application · medium
A company runs a nightly integration that imports 5,000 records into Dataverse using the Web API. The process occasionally fails with HTTP 429 responses. The team wants to minimize failures without adding significant complexity. What should you implement?
Select an answer first

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