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Exam Code: PL-300

Exam Name Microsoft Power BI Data Analyst

Certification Provider: Microsoft

Corresponding Certification: Microsoft Certified: Power BI Data Analyst Associate

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

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Microsoft PL-300 Practice Test 14

Question 130

A Power BI team has selected this approach: Pivot selected question codes into respondent-level columns with controlled aggregation. The original business context is: A survey has several question rows per respondent and needs one row per respondent for profile attributes. Which acceptance test best demonstrates the intended outcome?

  1. The output has the expected respondent grain and handles duplicate answers explicitly.
  2. The result contains only vendor records not found in the register.
  3. The index is sequential in the chosen order and business-key uniqueness is unaffected.
  4. The resulting table contains both historic and new event rows rather than horizontally joined fields.

Explanation

Correct Answer

A:

The output has the expected respondent grain and handles duplicate answers explicitly. It provides the required observation for the chosen implementation: Pivot selected question codes into respondent-level columns with controlled aggregation. This test addresses the stated business constraint directly.

Incorrect Answers

B:

The result contains only vendor records not found in the register. That check would be meaningful for the separate case: A quality team wants records that have no match in a registered-vendor list. It would not directly verify this scenario's selected implementation: Pivot selected question codes into respondent-level columns with controlled aggregation.

C:

The index is sequential in the chosen order and business-key uniqueness is unaffected. That check would be meaningful for the separate case: A table needs row numbers to help diagnose source ordering but the model's natural business keys must stay unchanged. It would not directly verify this scenario's selected implementation: Pivot selected question codes into respondent-level columns with controlled aggregation.

D:

The resulting table contains both historic and new event rows rather than horizontally joined fields. That check would be meaningful for the separate case: A marketing analyst wants to keep all historic records while appending new daily records from a matching query. It would not directly verify this scenario's selected implementation: Pivot selected question codes into respondent-level columns with controlled aggregation.

Question 131

An app export contains nested records of customer contact details in one column. What should the Power BI analyst configure to meet the stated need?

  1. Use an inner merge on the agreed invoice key.
  2. Remove irrelevant columns before loading to reduce model size.
  3. Split the delimited list into rows rather than into new numbered columns.
  4. Expand the record column into selected, permitted contact properties.

Explanation

Correct Answer

D:

Expand the record column into selected, permitted contact properties. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: The transformed preview shows email and phone as separate fields for each customer.

Incorrect Answers

A:

'Use an inner merge on the agreed invoice key' addresses the mechanism measured by 'The output includes only invoices with a matching key in both lists'. The current outcome is 'The transformed preview shows email and phone as separate fields for each customer' after 'Expand the record column into selected, permitted contact properties', which the distractor leaves unverified.

B:

'Loaded tables omit unnecessary text while all required analytical fields remain' would demonstrate 'Remove irrelevant columns before loading to reduce model size', but not 'The transformed preview shows email and phone as separate fields for each customer'. The latter requires 'Expand the record column into selected, permitted contact properties' in this scenario.

C:

Using 'Split the delimited list into rows rather than into new numbered columns' supports the result 'The resulting record count reflects one row per incident-severity pair'. It does not implement 'Expand the record column into selected, permitted contact properties' or prove 'The transformed preview shows email and phone as separate fields for each customer' for this question.

Question 132

A Power BI team has selected this approach: Expand the record column into selected, permitted contact properties. The original business context is: An app export contains nested records of customer contact details in one column. Which check would show that the solution meets its stated goal?

  1. The resulting record count reflects one row per incident-severity pair.
  2. The transformed preview shows email and phone as separate fields for each customer.
  3. Loaded tables omit unnecessary text while all required analytical fields remain.
  4. The output includes only invoices with a matching key in both lists.

Explanation

Correct Answer

B:

The transformed preview shows email and phone as separate fields for each customer. It provides the required observation for the chosen implementation: Expand the record column into selected, permitted contact properties. This test addresses the stated business constraint directly.

Incorrect Answers

A:

The resulting record count reflects one row per incident-severity pair. That check would be meaningful for the separate case: An incident export contains 'critical, high, medium' in one cell and the analyst needs one incident-severity row per label. It would not directly verify this scenario's selected implementation: Expand the record column into selected, permitted contact properties.

C:

Loaded tables omit unnecessary text while all required analytical fields remain. That check would be meaningful for the separate case: A fact query includes columns for note text and debug payloads that reports never use. It would not directly verify this scenario's selected implementation: Expand the record column into selected, permitted contact properties.

D:

The output includes only invoices with a matching key in both lists. That check would be meaningful for the separate case: An invoice process needs rows shared by two tax-review lists, not every row from either list. It would not directly verify this scenario's selected implementation: Expand the record column into selected, permitted contact properties.

Question 133

A data team wants to preserve all left-side orders even when a product master lacks a matching SKU. Which modeling or report-design decision most directly resolves this situation?

  1. Define a controlled schema normalization step before combining files.
  2. Transpose the appropriate rectangular table in Power Query after clarifying headers.
  3. Set a fixed decimal or decimal number type appropriate to monetary calculations.
  4. Use a left outer merge from Orders to Products.

Explanation

Correct Answer

D:

Use a left outer merge from Orders to Products. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: All orders remain after expansion, with missing product attributes represented as null.

Incorrect Answers

A:

'Define a controlled schema normalization step before combining files' is validated when 'Both old and new extracts populate the target columns and schema mismatches are flagged'. It does not demonstrate 'All orders remain after expansion, with missing product attributes represented as null', which requires 'Use a left outer merge from Orders to Products'.

B:

A successful 'Transpose the appropriate rectangular table in Power Query after clarifying headers' would show 'Previous row labels become columns while values retain the intended alignment'. This case needs 'Use a left outer merge from Orders to Products' and evidence that 'All orders remain after expansion, with missing product attributes represented as null', not the other outcome.

C:

The check for 'Set a fixed decimal or decimal number type appropriate to monetary calculations' is 'Sample values retain their required fractional precision after load'. That does not establish 'All orders remain after expansion, with missing product attributes represented as null'; the stated requirement calls for 'Use a left outer merge from Orders to Products'.

Question 134

A Power BI team has selected this approach: Use a left outer merge from Orders to Products. The original business context is: A data team wants to preserve all left-side orders even when a product master lacks a matching SKU. Which observation best indicates the requirement was met?

  1. Sample values retain their required fractional precision after load.
  2. Previous row labels become columns while values retain the intended alignment.
  3. Both old and new extracts populate the target columns and schema mismatches are flagged.
  4. All orders remain after expansion, with missing product attributes represented as null.

Explanation

Correct Answer

D:

All orders remain after expansion, with missing product attributes represented as null. It provides the required observation for the chosen implementation: Use a left outer merge from Orders to Products. This test addresses the stated business constraint directly.

Incorrect Answers

A:

Sample values retain their required fractional precision after load. That check would be meaningful for the separate case: A source's decimal sales amount is accidentally cast to Whole Number during import. It would not directly verify this scenario's selected implementation: Use a left outer merge from Orders to Products.

B:

Previous row labels become columns while values retain the intended alignment. That check would be meaningful for the separate case: An analyst has a table showing daily sales but needs a transposed matrix for a one-off interface. It would not directly verify this scenario's selected implementation: Use a left outer merge from Orders to Products.

C:

Both old and new extracts populate the target columns and schema mismatches are flagged. That check would be meaningful for the separate case: A group of monthly extracts changes its file schema midway through the year. It would not directly verify this scenario's selected implementation: Use a left outer merge from Orders to Products.

Question 135

A quality team wants records that have no match in a registered-vendor list. Which solution should the analyst prioritize for this scenario?

  1. Use a left anti join between submitted vendors and the approved register.
  2. Unpivot language-specific name fields into Language and ProductName rows.
  3. Normalize schema column names and types before an append operation.
  4. Retain currency context and convert through a defined exchange-rate methodology before combined totals.

Explanation

Correct Answer

A:

Use a left anti join between submitted vendors and the approved register. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: The result contains only vendor records not found in the register.

Incorrect Answers

B:

'Unpivot language-specific name fields into Language and ProductName rows' addresses the mechanism measured by 'The result supports language filtering without proliferating name columns'. The current outcome is 'The result contains only vendor records not found in the register' after 'Use a left anti join between submitted vendors and the approved register', which the distractor leaves unverified.

C:

'All regions populate the same normalized columns without duplicate case-variant fields' would demonstrate 'Normalize schema column names and types before an append operation', but not 'The result contains only vendor records not found in the register'. The latter requires 'Use a left anti join between submitted vendors and the approved register' in this scenario.

D:

Using 'Retain currency context and convert through a defined exchange-rate methodology before combined totals' supports the result 'Reconciled totals use a common reporting currency and state the rate date'. It does not implement 'Use a left anti join between submitted vendors and the approved register' or prove 'The result contains only vendor records not found in the register' for this question.

Question 136

A Power BI team has selected this approach: Use a left anti join between submitted vendors and the approved register. The original business context is: A quality team wants records that have no match in a registered-vendor list. What evidence most directly verifies that the requirement is satisfied?

  1. All regions populate the same normalized columns without duplicate case-variant fields.
  2. Reconciled totals use a common reporting currency and state the rate date.
  3. The result contains only vendor records not found in the register.
  4. The result supports language filtering without proliferating name columns.

Explanation

Correct Answer

C:

The result contains only vendor records not found in the register. It provides the required observation for the chosen implementation: Use a left anti join between submitted vendors and the approved register. This test addresses the stated business constraint directly.

Incorrect Answers

A:

All regions populate the same normalized columns without duplicate case-variant fields. That check would be meaningful for the separate case: A seasonal store's regional CSV files use inconsistent case in their column headers. It would not directly verify this scenario's selected implementation: Use a left anti join between submitted vendors and the approved register.

B:

Reconciled totals use a common reporting currency and state the rate date. That check would be meaningful for the separate case: An order table reports sales in different currencies and an analyst plans to sum raw amounts across currencies. It would not directly verify this scenario's selected implementation: Use a left anti join between submitted vendors and the approved register.

D:

The result supports language filtering without proliferating name columns. That check would be meaningful for the separate case: A sales dimension table has two separate columns for English and German product names but a locale dimension is preferred. It would not directly verify this scenario's selected implementation: Use a left anti join between submitted vendors and the approved register.

Question 137

An invoice process needs rows shared by two tax-review lists, not every row from either list. What should the Power BI analyst configure to meet the stated need?

  1. Disable load for the unnecessary duplicate or remove it after dependency review.
  2. Use an inner merge on the agreed invoice key.
  3. Add an index column for tracing while preserving business identifiers.
  4. Arrange base and referenced queries as an acyclic dependency chain.

Explanation

Correct Answer

B:

Use an inner merge on the agreed invoice key. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: The output includes only invoices with a matching key in both lists.

Incorrect Answers

A:

'Disable load for the unnecessary duplicate or remove it after dependency review' is validated when 'Only the intended fact table loads and dependent queries still work'. It does not demonstrate 'The output includes only invoices with a matching key in both lists', which requires 'Use an inner merge on the agreed invoice key'.

C:

A successful 'Add an index column for tracing while preserving business identifiers' would show 'The index is sequential in the chosen order and business-key uniqueness is unaffected'. This case needs 'Use an inner merge on the agreed invoice key' and evidence that 'The output includes only invoices with a matching key in both lists', not the other outcome.

D:

The check for 'Arrange base and referenced queries as an acyclic dependency chain' is 'The query-dependency view contains no cycles and all enabled outputs refresh'. That does not establish 'The output includes only invoices with a matching key in both lists'; the stated requirement calls for 'Use an inner merge on the agreed invoice key'.

Question 138

A Power BI team has selected this approach: Use an inner merge on the agreed invoice key. The original business context is: An invoice process needs rows shared by two tax-review lists, not every row from either list. What validation would be most relevant before accepting this change?

  1. The index is sequential in the chosen order and business-key uniqueness is unaffected.
  2. The output includes only invoices with a matching key in both lists.
  3. Only the intended fact table loads and dependent queries still work.
  4. The query-dependency view contains no cycles and all enabled outputs refresh.

Explanation

Correct Answer

B:

The output includes only invoices with a matching key in both lists. It provides the required observation for the chosen implementation: Use an inner merge on the agreed invoice key. This test addresses the stated business constraint directly.

Incorrect Answers

A:

The index is sequential in the chosen order and business-key uniqueness is unaffected. That check would be meaningful for the separate case: A table needs row numbers to help diagnose source ordering but the model's natural business keys must stay unchanged. It would not directly verify this scenario's selected implementation: Use an inner merge on the agreed invoice key.

C:

Only the intended fact table loads and dependent queries still work. That check would be meaningful for the separate case: A query's duplicate stage adds no new rows but creates two loaded copies of a large fact table. It would not directly verify this scenario's selected implementation: Use an inner merge on the agreed invoice key.

D:

The query-dependency view contains no cycles and all enabled outputs refresh. That check would be meaningful for the separate case: A Power Query dataflow output is reused by many downstream queries but transformations must not create a circular reference. It would not directly verify this scenario's selected implementation: Use an inner merge on the agreed invoice key.

Question 139

An analyst has a table showing daily sales but needs a transposed matrix for a one-off interface. Which modeling or report-design decision most directly resolves this situation?

  1. Derive a normalized Date-only key from the timestamps for the relationship.
  2. Use Append after validating matching columns, not Merge on customer ID.
  3. Split the delimited list into rows rather than into new numbered columns.
  4. Transpose the appropriate rectangular table in Power Query after clarifying headers.

Explanation

Correct Answer

D:

Transpose the appropriate rectangular table in Power Query after clarifying headers. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: Previous row labels become columns while values retain the intended alignment.

Incorrect Answers

A:

'Derive a normalized Date-only key from the timestamps for the relationship' addresses the mechanism measured by 'Every intended transaction matches the corresponding calendar date without time mismatches'. The current outcome is 'Previous row labels become columns while values retain the intended alignment' after 'Transpose the appropriate rectangular table in Power Query after clarifying headers', which the distractor leaves unverified.

B:

'The resulting table contains both historic and new event rows rather than horizontally joined fields' would demonstrate 'Use Append after validating matching columns, not Merge on customer ID', but not 'Previous row labels become columns while values retain the intended alignment'. The latter requires 'Transpose the appropriate rectangular table in Power Query after clarifying headers' in this scenario.

C:

Using 'Split the delimited list into rows rather than into new numbered columns' supports the result 'The resulting record count reflects one row per incident-severity pair'. It does not implement 'Transpose the appropriate rectangular table in Power Query after clarifying headers' or prove 'Previous row labels become columns while values retain the intended alignment' for this question.

Question 140

A Power BI team has selected this approach: Transpose the appropriate rectangular table in Power Query after clarifying headers. The original business context is: An analyst has a table showing daily sales but needs a transposed matrix for a one-off interface. Which check would show that the solution meets its stated goal?

  1. The resulting table contains both historic and new event rows rather than horizontally joined fields.
  2. The resulting record count reflects one row per incident-severity pair.
  3. Every intended transaction matches the corresponding calendar date without time mismatches.
  4. Previous row labels become columns while values retain the intended alignment.

Explanation

Correct Answer

D:

Previous row labels become columns while values retain the intended alignment. It provides the required observation for the chosen implementation: Transpose the appropriate rectangular table in Power Query after clarifying headers. This test addresses the stated business constraint directly.

Incorrect Answers

A:

The resulting table contains both historic and new event rows rather than horizontally joined fields. That check would be meaningful for the separate case: A marketing analyst wants to keep all historic records while appending new daily records from a matching query. It would not directly verify this scenario's selected implementation: Transpose the appropriate rectangular table in Power Query after clarifying headers.

B:

The resulting record count reflects one row per incident-severity pair. That check would be meaningful for the separate case: An incident export contains 'critical, high, medium' in one cell and the analyst needs one incident-severity row per label. It would not directly verify this scenario's selected implementation: Transpose the appropriate rectangular table in Power Query after clarifying headers.

C:

Every intended transaction matches the corresponding calendar date without time mismatches. That check would be meaningful for the separate case: A semantic model's fact table uses date-time stamps but needs to relate to a day-grain Date dimension. It would not directly verify this scenario's selected implementation: Transpose the appropriate rectangular table in Power Query after clarifying headers.