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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 13

Question 120

A Power BI team has selected this approach: Split the text column by an agreed delimiter or pattern and check irregular names. The original business context is: A file includes one column with full name and the model needs FirstName and LastName for report labels. Which observed result would best confirm the change worked as intended?

  1. All orders remain after expansion, with missing product attributes represented as null.
  2. The index is sequential in the chosen order and business-key uniqueness is unaffected.
  3. Each sample invoice's derived year and month match its date.
  4. Sample known names yield the approved components without truncation.

Explanation

Correct Answer

D:

Sample known names yield the approved components without truncation. It provides the required observation for the chosen implementation: Split the text column by an agreed delimiter or pattern and check irregular names. This test addresses the stated business constraint directly.

Incorrect Answers

A:

All orders remain after expansion, with missing product attributes represented as null. That check would be meaningful for the separate case: A data team wants to preserve all left-side orders even when a product master lacks a matching SKU. It would not directly verify this scenario's selected implementation: Split the text column by an agreed delimiter or pattern and check irregular names.

B:

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: Split the text column by an agreed delimiter or pattern and check irregular names.

C:

Each sample invoice's derived year and month match its date. That check would be meaningful for the separate case: An analyst needs a normalized Year and Month field from an invoice date. It would not directly verify this scenario's selected implementation: Split the text column by an agreed delimiter or pattern and check irregular names.

Question 121

A currency column contains a decimal point depending on a French locale and transforms incorrectly under US locale. Which modeling or report-design decision most directly resolves this situation?

  1. Split the delimited list into rows rather than into new numbered columns.
  2. Use a left anti join between submitted vendors and the approved register.
  3. Use Change Type with Locale and choose the source's culture for decimal parsing.
  4. Split the composite address using a validated delimiter and retain unparseable exceptions.

Explanation

Correct Answer

C:

Use Change Type with Locale and choose the source's culture for decimal parsing. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: A value like 1 234,50 converts to the intended 1234.50 rather than an error.

Incorrect Answers

A:

'Split the delimited list into rows rather than into new numbered columns' is validated when 'The resulting record count reflects one row per incident-severity pair'. It does not demonstrate 'A value like 1 234,50 converts to the intended 1234.50 rather than an error', which requires 'Use Change Type with Locale and choose the source's culture for decimal parsing'.

B:

A successful 'Use a left anti join between submitted vendors and the approved register' would show 'The result contains only vendor records not found in the register'. This case needs 'Use Change Type with Locale and choose the source's culture for decimal parsing' and evidence that 'A value like 1 234,50 converts to the intended 1234.50 rather than an error', not the other outcome.

D:

The check for 'Split the composite address using a validated delimiter and retain unparseable exceptions' is 'The new columns can filter locations without silently dropping malformed addresses'. That does not establish 'A value like 1 234,50 converts to the intended 1234.50 rather than an error'; the stated requirement calls for 'Use Change Type with Locale and choose the source's culture for decimal parsing'.

Question 122

A Power BI team has selected this approach: Use Change Type with Locale and choose the source's culture for decimal parsing. The original business context is: A currency column contains a decimal point depending on a French locale and transforms incorrectly under US locale. What evidence most directly verifies that the requirement is satisfied?

  1. A value like 1 234,50 converts to the intended 1234.50 rather than an error.
  2. The resulting record count reflects one row per incident-severity pair.
  3. The result contains only vendor records not found in the register.
  4. The new columns can filter locations without silently dropping malformed addresses.

Explanation

Correct Answer

A:

A value like 1 234,50 converts to the intended 1234.50 rather than an error. It provides the required observation for the chosen implementation: Use Change Type with Locale and choose the source's culture for decimal parsing. This test addresses the stated business constraint directly.

Incorrect Answers

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: Use Change Type with Locale and choose the source's culture for decimal parsing.

C:

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: Use Change Type with Locale and choose the source's culture for decimal parsing.

D:

The new columns can filter locations without silently dropping malformed addresses. That check would be meaningful for the separate case: A data source has 'City, State, PostalCode' in one text column and filtering needs separate geography fields. It would not directly verify this scenario's selected implementation: Use Change Type with Locale and choose the source's culture for decimal parsing.

Question 123

A branch export uses headers on row four after three report-title rows. Which solution should the analyst prioritize for this scenario?

  1. Define a controlled schema normalization step before combining files.
  2. Pivot selected question codes into respondent-level columns with controlled aggregation.
  3. Use an inner merge on the agreed invoice key.
  4. Remove nondata leading rows and promote the intended header row.

Explanation

Correct Answer

D:

Remove nondata leading rows and promote the intended header row. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: Column names match the approved schema and title text is not loaded as sales data.

Incorrect Answers

A:

'Define a controlled schema normalization step before combining files' addresses the mechanism measured by 'Both old and new extracts populate the target columns and schema mismatches are flagged'. The current outcome is 'Column names match the approved schema and title text is not loaded as sales data' after 'Remove nondata leading rows and promote the intended header row', which the distractor leaves unverified.

B:

'The output has the expected respondent grain and handles duplicate answers explicitly' would demonstrate 'Pivot selected question codes into respondent-level columns with controlled aggregation', but not 'Column names match the approved schema and title text is not loaded as sales data'. The latter requires 'Remove nondata leading rows and promote the intended header row' in this scenario.

C:

Using 'Use an inner merge on the agreed invoice key' supports the result 'The output includes only invoices with a matching key in both lists'. It does not implement 'Remove nondata leading rows and promote the intended header row' or prove 'Column names match the approved schema and title text is not loaded as sales data' for this question.

Question 124

A Power BI team has selected this approach: Remove nondata leading rows and promote the intended header row. The original business context is: A branch export uses headers on row four after three report-title rows. What validation would be most relevant before accepting this change?

  1. The output has the expected respondent grain and handles duplicate answers explicitly.
  2. Column names match the approved schema and title text is not loaded as sales data.
  3. The output includes only invoices with a matching key in both lists.
  4. Both old and new extracts populate the target columns and schema mismatches are flagged.

Explanation

Correct Answer

B:

Column names match the approved schema and title text is not loaded as sales data. It provides the required observation for the chosen implementation: Remove nondata leading rows and promote the intended header row. This test addresses the stated business constraint directly.

Incorrect Answers

A:

The output has the expected respondent grain and handles duplicate answers explicitly. That check would be meaningful for the separate case: A survey has several question rows per respondent and needs one row per respondent for profile attributes. It would not directly verify this scenario's selected implementation: Remove nondata leading rows and promote the intended header row.

C:

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: Remove nondata leading rows and promote the intended header row.

D:

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: Remove nondata leading rows and promote the intended header row.

Question 125

An analyst needs a normalized Year and Month field from an invoice date. What should the Power BI analyst configure to meet the stated need?

  1. Add typed date-derived columns with Date.Year and Date.Month where appropriate.
  2. Transpose the appropriate rectangular table in Power Query after clarifying headers.
  3. Expand the record column into selected, permitted contact properties.
  4. Unpivot language-specific name fields into Language and ProductName rows.

Explanation

Correct Answer

A:

Add typed date-derived columns with Date.Year and Date.Month where appropriate. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: Each sample invoice's derived year and month match its date.

Incorrect Answers

B:

'Transpose the appropriate rectangular table in Power Query after clarifying headers' is validated when 'Previous row labels become columns while values retain the intended alignment'. It does not demonstrate 'Each sample invoice's derived year and month match its date', which requires 'Add typed date-derived columns with Date.Year and Date.Month where appropriate'.

C:

A successful 'Expand the record column into selected, permitted contact properties' would show 'The transformed preview shows email and phone as separate fields for each customer'. This case needs 'Add typed date-derived columns with Date.Year and Date.Month where appropriate' and evidence that 'Each sample invoice's derived year and month match its date', not the other outcome.

D:

The check for 'Unpivot language-specific name fields into Language and ProductName rows' is 'The result supports language filtering without proliferating name columns'. That does not establish 'Each sample invoice's derived year and month match its date'; the stated requirement calls for 'Add typed date-derived columns with Date.Year and Date.Month where appropriate'.

Question 126

A Power BI team has selected this approach: Add typed date-derived columns with Date.Year and Date.Month where appropriate. The original business context is: An analyst needs a normalized Year and Month field from an invoice date. Which observation best indicates the requirement was met?

  1. Previous row labels become columns while values retain the intended alignment.
  2. The transformed preview shows email and phone as separate fields for each customer.
  3. Each sample invoice's derived year and month match its date.
  4. The result supports language filtering without proliferating name columns.

Explanation

Correct Answer

C:

Each sample invoice's derived year and month match its date. It provides the required observation for the chosen implementation: Add typed date-derived columns with Date.Year and Date.Month where appropriate. This test addresses the stated business constraint directly.

Incorrect Answers

A:

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: Add typed date-derived columns with Date.Year and Date.Month where appropriate.

B:

The transformed preview shows email and phone as separate fields for each customer. That check would be meaningful for the separate case: An app export contains nested records of customer contact details in one column. It would not directly verify this scenario's selected implementation: Add typed date-derived columns with Date.Year and Date.Month where appropriate.

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: Add typed date-derived columns with Date.Year and Date.Month where appropriate.

Question 127

A data source has 'City, State, PostalCode' in one text column and filtering needs separate geography fields. Which modeling or report-design decision most directly resolves this situation?

  1. Use a left outer merge from Orders to Products.
  2. Normalize schema column names and types before an append operation.
  3. Arrange base and referenced queries as an acyclic dependency chain.
  4. Split the composite address using a validated delimiter and retain unparseable exceptions.

Explanation

Correct Answer

D:

Split the composite address using a validated delimiter and retain unparseable exceptions. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: The new columns can filter locations without silently dropping malformed addresses.

Incorrect Answers

A:

'Use a left outer merge from Orders to Products' addresses the mechanism measured by 'All orders remain after expansion, with missing product attributes represented as null'. The current outcome is 'The new columns can filter locations without silently dropping malformed addresses' after 'Split the composite address using a validated delimiter and retain unparseable exceptions', which the distractor leaves unverified.

B:

'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 new columns can filter locations without silently dropping malformed addresses'. The latter requires 'Split the composite address using a validated delimiter and retain unparseable exceptions' in this scenario.

C:

Using 'Arrange base and referenced queries as an acyclic dependency chain' supports the result 'The query-dependency view contains no cycles and all enabled outputs refresh'. It does not implement 'Split the composite address using a validated delimiter and retain unparseable exceptions' or prove 'The new columns can filter locations without silently dropping malformed addresses' for this question.

Question 128

A Power BI team has selected this approach: Split the composite address using a validated delimiter and retain unparseable exceptions. The original business context is: A data source has 'City, State, PostalCode' in one text column and filtering needs separate geography fields. Which observed result would best confirm the change worked as intended?

  1. All orders remain after expansion, with missing product attributes represented as null.
  2. All regions populate the same normalized columns without duplicate case-variant fields.
  3. The query-dependency view contains no cycles and all enabled outputs refresh.
  4. The new columns can filter locations without silently dropping malformed addresses.

Explanation

Correct Answer

D:

The new columns can filter locations without silently dropping malformed addresses. It provides the required observation for the chosen implementation: Split the composite address using a validated delimiter and retain unparseable exceptions. This test addresses the stated business constraint directly.

Incorrect Answers

A:

All orders remain after expansion, with missing product attributes represented as null. That check would be meaningful for the separate case: A data team wants to preserve all left-side orders even when a product master lacks a matching SKU. It would not directly verify this scenario's selected implementation: Split the composite address using a validated delimiter and retain unparseable exceptions.

B:

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: Split the composite address using a validated delimiter and retain unparseable exceptions.

C:

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: Split the composite address using a validated delimiter and retain unparseable exceptions.

Question 129

A survey has several question rows per respondent and needs one row per respondent for profile attributes. Which solution should the analyst prioritize for this scenario?

  1. Pivot selected question codes into respondent-level columns with controlled aggregation.
  2. Use a left anti join between submitted vendors and the approved register.
  3. Add an index column for tracing while preserving business identifiers.
  4. Use Append after validating matching columns, not Merge on customer ID.

Explanation

Correct Answer

A:

Pivot selected question codes into respondent-level columns with controlled aggregation. This targets the specific requirement described for this Power BI scenario. The corresponding acceptance check is: The output has the expected respondent grain and handles duplicate answers explicitly.

Incorrect Answers

B:

'Use a left anti join between submitted vendors and the approved register' is validated when 'The result contains only vendor records not found in the register'. It does not demonstrate 'The output has the expected respondent grain and handles duplicate answers explicitly', which requires 'Pivot selected question codes into respondent-level columns with controlled aggregation'.

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 'Pivot selected question codes into respondent-level columns with controlled aggregation' and evidence that 'The output has the expected respondent grain and handles duplicate answers explicitly', not the other outcome.

D:

The check for 'Use Append after validating matching columns, not Merge on customer ID' is 'The resulting table contains both historic and new event rows rather than horizontally joined fields'. That does not establish 'The output has the expected respondent grain and handles duplicate answers explicitly'; the stated requirement calls for 'Pivot selected question codes into respondent-level columns with controlled aggregation'.

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.