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Microsoft PL-300 Practice Test 6

Question 50

A Power Query source is an API that exposes paged results rather than one complete response. A colleague proposes: Read only the first page and assume it contains every customer record. Which explanation BEST identifies the defect in that proposal?

  1. A paginated endpoint must be traversed to obtain its entire result set
  2. Theme formatting cannot renew a rejected OAuth token
  3. The suggested approach is safe merely because its product name is familiar.
  4. A limited response page omits later records and biases the model

Explanation

Correct Answer

D:

A limited response page omits later records and biases the model. This directly explains why the proposal 'Read only the first page and assume it contains every customer record' should not be used.

Incorrect Answers

A:

This is reasoning supporting the preferred solution 'Implement controlled pagination to fetch and combine all authorized result pages', but it does not directly name the defect in the proposed shortcut.

B:

This addresses a different case: A finance model's scheduled refresh fails after an OAuth credential expires for its cloud SaaS source. It is not the specific defect in 'Read only the first page and assume it contains every customer record'.

C:

Product familiarity is not evidence of suitability. The actual defect in this proposal is: A limited response page omits later records and biases the model.

Question 51

A Power Query source is an API that exposes paged results rather than one complete response. After implementing Implement controlled pagination to fetch and combine all authorized result pages, which observation BEST demonstrates that the intended result is actually working?

  1. The report owner approves Implement controlled pagination to fetch and combine all authorized result pages without testing the resulting behavior.
  2. A manual and scheduled refresh succeed with the renewed credential
  3. The imported count matches the API's declared total after pagination
  4. The team schedules a future check of whether The imported count matches the API's declared total after pagination, but has not observed a result.

Explanation

Correct Answer

C:

The observation 'The imported count matches the API's declared total after pagination' directly tests the intended result. A paginated endpoint must be traversed to obtain its entire result set.

Incorrect Answers

A:

Approval of a proposed design is not evidence of working behavior. The required observation is: The imported count matches the API's declared total after pagination.

B:

This belongs to a different case: A finance model's scheduled refresh fails after an OAuth credential expires for its cloud SaaS source. It does not validate the current change. In the current question, this comparison is made against: A Power Query source is an API that exposes paged results rather than one complete response. After implementing Implement controlled pagination to fetch and combine all authorized result pages, which observation BEST demonstrates that the intended result is actually working?

D:

A future test is not yet observed operational evidence. The verification must establish: The imported count matches the API's declared total after pagination.

Question 52

The original scenario was: A Power Query source is an API that exposes paged results rather than one complete response. The initial solution is already in place. Now this new requirement arises: The API later enforces a per-minute request limit. Which ADDITIONAL action BEST meets the changed condition?

  1. Add compliant rate limiting and retry handling without duplicating rows
  2. The imported count matches the API's declared total after pagination
  3. Read only the first page and assume it contains every customer record
  4. Implement controlled pagination to fetch and combine all authorized result pages

Explanation

Correct Answer

A:

The changed requirement is 'The API later enforces a per-minute request limit'. The additional response is 'Add compliant rate limiting and retry handling without duplicating rows'.

Incorrect Answers

B:

This observes the original approach but is not an additional action: The imported count matches the API's declared total after pagination.

C:

This remains unsuitable for the original situation: A limited response page omits later records and biases the model. It also does not meet the changed need.

D:

This is the already implemented original solution: Implement controlled pagination to fetch and combine all authorized result pages. A paginated endpoint must be traversed to obtain its entire result set. It does not itself solve the new requirement.

Question 53

A procurement model must combine SQL inventory data with a public web commodity-price feed. Which approach BEST meets the stated Microsoft Power BI requirement?

  1. Replace the web parsing step with a supported authenticated API connector
  2. Use the supported SQL and web connectors and configure each source's privacy and authentication
  3. Copy the web page's HTML into a manually typed DAX calculated column
  4. Connect with appropriate permission and validate effective semantic-model security

Explanation

Correct Answer

B:

Multi-source Power Query queries require correct connectors and safe combination rules. For the stated case, Use the supported SQL and web connectors and configure each source's privacy and authentication.

Incorrect Answers

A:

This might be appropriate after a different requirement arises: The external feed changes to authenticated JSON requests. It is not the best initial response to the stated case.

C:

A hardcoded column does not provide a sustainable external data connection. The proposed shortcut 'Copy the web page's HTML into a manually typed DAX calculated column' fails the documented need.

D:

This addresses a separate source situation: A team plans row-level security on a shared semantic model and asks whether a new report connection automatically bypasses existing restrictions. It does not directly satisfy this case's priority.

Question 54

A procurement model must combine SQL inventory data with a public web commodity-price feed. A colleague proposes: Copy the web page's HTML into a manually typed DAX calculated column. Which explanation BEST identifies the defect in that proposal?

  1. The suggested approach is safe merely because its product name is familiar.
  2. Multi-source Power Query queries require correct connectors and safe combination rules
  3. A hardcoded column does not provide a sustainable external data connection
  4. Extracting restricted data into uncontrolled copies undermines model security

Explanation

Correct Answer

C:

A hardcoded column does not provide a sustainable external data connection. This directly explains why the proposal 'Copy the web page's HTML into a manually typed DAX calculated column' should not be used.

Incorrect Answers

A:

Product familiarity is not evidence of suitability. The actual defect in this proposal is: A hardcoded column does not provide a sustainable external data connection.

B:

This is reasoning supporting the preferred solution 'Use the supported SQL and web connectors and configure each source's privacy and authentication', but it does not directly name the defect in the proposed shortcut.

D:

This addresses a different case: A team plans row-level security on a shared semantic model and asks whether a new report connection automatically bypasses existing restrictions. It is not the specific defect in 'Copy the web page's HTML into a manually typed DAX calculated column'.

Question 55

A procurement model must combine SQL inventory data with a public web commodity-price feed. After implementing Use the supported SQL and web connectors and configure each source's privacy and authentication, which observation BEST demonstrates that the intended result is actually working?

  1. The team schedules a future check of whether Both data sources load and reconciliation shows current inventory and rate values, but has not observed a result.
  2. Both data sources load and reconciliation shows current inventory and rate values
  3. A test viewer sees only permitted rows in the connected report
  4. The report owner approves Use the supported SQL and web connectors and configure each source's privacy and authentication without testing the resulting behavior.

Explanation

Correct Answer

B:

The observation 'Both data sources load and reconciliation shows current inventory and rate values' directly tests the intended result. Multi-source Power Query queries require correct connectors and safe combination rules.

Incorrect Answers

A:

A future test is not yet observed operational evidence. The verification must establish: Both data sources load and reconciliation shows current inventory and rate values.

C:

This belongs to a different case: A team plans row-level security on a shared semantic model and asks whether a new report connection automatically bypasses existing restrictions. It does not validate the current change.

D:

Approval of a proposed design is not evidence of working behavior. The required observation is: Both data sources load and reconciliation shows current inventory and rate values.

Question 56

The original scenario was: A procurement model must combine SQL inventory data with a public web commodity-price feed. The initial solution is already in place. Now this new requirement arises: The external feed changes to authenticated JSON requests. Which ADDITIONAL action BEST meets the changed condition?

  1. Replace the web parsing step with a supported authenticated API connector
  2. Use the supported SQL and web connectors and configure each source's privacy and authentication
  3. Copy the web page's HTML into a manually typed DAX calculated column
  4. Both data sources load and reconciliation shows current inventory and rate values

Explanation

Correct Answer

A:

The changed requirement is 'The external feed changes to authenticated JSON requests'. The additional response is 'Replace the web parsing step with a supported authenticated API connector'.

Incorrect Answers

B:

This is the already implemented original solution: Use the supported SQL and web connectors and configure each source's privacy and authentication. Multi-source Power Query queries require correct connectors and safe combination rules. It does not itself solve the new requirement.

C:

This remains unsuitable for the original situation: A hardcoded column does not provide a sustainable external data connection. It also does not meet the changed need.

D:

This observes the original approach but is not an additional action: Both data sources load and reconciliation shows current inventory and rate values.

Question 57

A data steward requests a snapshot of annual planning data that must remain queryable during overnight database maintenance. Which approach BEST meets the stated Microsoft Power BI requirement?

  1. Change the affected data source settings and validate the connection
  2. Use Import mode with refresh scheduled outside maintenance windows
  3. Show the model's last successful refresh timestamp in the report
  4. Require DirectQuery for every visual despite the planned database outage

Explanation

Correct Answer

B:

Imported data stays available in its cached model even when the source is temporarily offline. For the stated case, Use Import mode with refresh scheduled outside maintenance windows.

Incorrect Answers

A:

This addresses a separate source situation: A warehouse database server is renamed and existing Power BI queries still reference the old host. It does not directly satisfy this case's priority. In the current question, this comparison is made against: A data steward requests a snapshot of annual planning data that must remain queryable during overnight database maintenance. Which approach BEST meets the stated Microsoft Power BI requirement?

C:

This might be appropriate after a different requirement arises: Planners now need a clearly labeled data freshness indicator. It is not the best initial response to the stated case.

D:

Live source queries may fail when the database is unavailable. The proposed shortcut 'Require DirectQuery for every visual despite the planned database outage' fails the documented need.

Question 58

A data steward requests a snapshot of annual planning data that must remain queryable during overnight database maintenance. A colleague proposes: Require DirectQuery for every visual despite the planned database outage. Which explanation BEST identifies the defect in that proposal?

  1. Imported data stays available in its cached model even when the source is temporarily offline
  2. Live source queries may fail when the database is unavailable
  3. The suggested approach is safe merely because its product name is familiar.
  4. Visual design changes will not correct a stale source endpoint

Explanation

Correct Answer

B:

Live source queries may fail when the database is unavailable. This directly explains why the proposal 'Require DirectQuery for every visual despite the planned database outage' should not be used.

Incorrect Answers

A:

This is reasoning supporting the preferred solution 'Use Import mode with refresh scheduled outside maintenance windows', but it does not directly name the defect in the proposed shortcut.

C:

Product familiarity is not evidence of suitability. The actual defect in this proposal is: Live source queries may fail when the database is unavailable.

D:

This addresses a different case: A warehouse database server is renamed and existing Power BI queries still reference the old host. It is not the specific defect in 'Require DirectQuery for every visual despite the planned database outage'.

Question 59

A data steward requests a snapshot of annual planning data that must remain queryable during overnight database maintenance. After implementing Use Import mode with refresh scheduled outside maintenance windows, which observation BEST demonstrates that the intended result is actually working?

  1. Refresh succeeds against the new host and returns the expected sample rows
  2. The team schedules a future check of whether Reports still open with the last refreshed snapshot while the database is down, but has not observed a result.
  3. Reports still open with the last refreshed snapshot while the database is down
  4. The report owner approves Use Import mode with refresh scheduled outside maintenance windows without testing the resulting behavior.

Explanation

Correct Answer

C:

The observation 'Reports still open with the last refreshed snapshot while the database is down' directly tests the intended result. Imported data stays available in its cached model even when the source is temporarily offline.

Incorrect Answers

A:

This belongs to a different case: A warehouse database server is renamed and existing Power BI queries still reference the old host. It does not validate the current change. In the current question, this comparison is made against: A data steward requests a snapshot of annual planning data that must remain queryable during overnight database maintenance. After implementing Use Import mode with refresh scheduled outside maintenance windows, which observation BEST demonstrates that the intended result is actually working?

B:

A future test is not yet observed operational evidence. The verification must establish: Reports still open with the last refreshed snapshot while the database is down.

D:

Approval of a proposed design is not evidence of working behavior. The required observation is: Reports still open with the last refreshed snapshot while the database is down.

Question 60

The original scenario was: A data steward requests a snapshot of annual planning data that must remain queryable during overnight database maintenance. The initial solution is already in place. Now this new requirement arises: Planners now need a clearly labeled data freshness indicator. Which ADDITIONAL action BEST meets the changed condition?

  1. Use Import mode with refresh scheduled outside maintenance windows
  2. Reports still open with the last refreshed snapshot while the database is down
  3. Show the model's last successful refresh timestamp in the report
  4. Require DirectQuery for every visual despite the planned database outage

Explanation

Correct Answer

C:

The changed requirement is 'Planners now need a clearly labeled data freshness indicator'. The additional response is 'Show the model's last successful refresh timestamp in the report'.

Incorrect Answers

A:

This is the already implemented original solution: Use Import mode with refresh scheduled outside maintenance windows. Imported data stays available in its cached model even when the source is temporarily offline. It does not itself solve the new requirement.

B:

This observes the original approach but is not an additional action: Reports still open with the last refreshed snapshot while the database is down.

D:

This remains unsuitable for the original situation: Live source queries may fail when the database is unavailable. It also does not meet the changed need.

Microsoft Power BI Data Analyst (PL-300) Practice Tests