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Microsoft PL-300 Practice Test 17

Question 160

The original scenario was: A location file has City and State concatenated as Austin, TX in one column. The initial solution is already in place. Now this new requirement arises: Some locations now include commas inside quoted city names. Which ADDITIONAL action BEST meets the changed condition?

  1. City and State load separately with no leading spaces
  2. Transpose the entire table to split every location string
  3. Split the column by its documented comma delimiter and trim results
  4. Use proper CSV quoting or a robust parsing rule instead of naive splitting

Explanation

Correct Answer

D:

The changed requirement is 'Some locations now include commas inside quoted city names'. The additional response is 'Use proper CSV quoting or a robust parsing rule instead of naive splitting'.

Incorrect Answers

A:

This observes the original approach but is not an additional action: City and State load separately with no leading spaces.

B:

This remains unsuitable for the original situation: Transposition changes orientation but does not parse delimiters. It also does not meet the changed need.

C:

This is the already implemented original solution: Split the column by its documented comma delimiter and trim results. Splitting a delimited field creates separate analyzable attributes. It does not itself solve the new requirement.

Question 161

A base cleaned Orders query must feed both retail and wholesale reporting tables without redoing the source cleanup. Which approach BEST meets the stated Microsoft Power BI requirement?

  1. Split the column by its documented comma delimiter and trim results
  2. Duplicate the query when independent transformation lineage is intended
  3. Create Reference queries from the cleaned base query
  4. Copy and paste the entire source M script separately for each view

Explanation

Correct Answer

C:

References share an upstream transformation lineage while allowing downstream variation. For the stated case, Create Reference queries from the cleaned base query.

Incorrect Answers

A:

This addresses a separate source situation: A location file has City and State concatenated as Austin, TX in one column. It does not directly satisfy this case's priority.

B:

This might be appropriate after a different requirement arises: The wholesale branch must be frozen to a separate independent M chain. It is not the best initial response to the stated case.

D:

Independent copies can diverge when the base cleaning changes. The proposed shortcut 'Copy and paste the entire source M script separately for each view' fails the documented need.

Question 162

A base cleaned Orders query must feed both retail and wholesale reporting tables without redoing the source cleanup. A colleague proposes: Copy and paste the entire source M script separately for each view. Which explanation BEST identifies the defect in that proposal?

  1. Independent copies can diverge when the base cleaning changes
  2. References share an upstream transformation lineage while allowing downstream variation
  3. Transposition changes orientation but does not parse delimiters
  4. The suggested approach is safe merely because its product name is familiar.

Explanation

Correct Answer

A:

Independent copies can diverge when the base cleaning changes. This directly explains why the proposal 'Copy and paste the entire source M script separately for each view' should not be used.

Incorrect Answers

B:

This is reasoning supporting the preferred solution 'Create Reference queries from the cleaned base query', but it does not directly name the defect in the proposed shortcut.

C:

This addresses a different case: A location file has City and State concatenated as Austin, TX in one column. It is not the specific defect in 'Copy and paste the entire source M script separately for each view'.

D:

Product familiarity is not evidence of suitability. The actual defect in this proposal is: Independent copies can diverge when the base cleaning changes.

Question 163

A base cleaned Orders query must feed both retail and wholesale reporting tables without redoing the source cleanup. After implementing Create Reference queries from the cleaned base query, which observation BEST demonstrates that the intended result is actually working?

  1. The report owner approves Create Reference queries from the cleaned base query without testing the resulting behavior.
  2. The team schedules a future check of whether Both derived queries reflect a change made to the shared base cleanup, but has not observed a result.
  3. Both derived queries reflect a change made to the shared base cleanup
  4. City and State load separately with no leading spaces

Explanation

Correct Answer

C:

The observation 'Both derived queries reflect a change made to the shared base cleanup' directly tests the intended result. References share an upstream transformation lineage while allowing downstream variation.

Incorrect Answers

A:

Approval of a proposed design is not evidence of working behavior. The required observation is: Both derived queries reflect a change made to the shared base cleanup.

B:

A future test is not yet observed operational evidence. The verification must establish: Both derived queries reflect a change made to the shared base cleanup.

D:

This belongs to a different case: A location file has City and State concatenated as Austin, TX in one column. It does not validate the current change.

Question 164

The original scenario was: A base cleaned Orders query must feed both retail and wholesale reporting tables without redoing the source cleanup. The initial solution is already in place. Now this new requirement arises: The wholesale branch must be frozen to a separate independent M chain. Which ADDITIONAL action BEST meets the changed condition?

  1. Duplicate the query when independent transformation lineage is intended
  2. Copy and paste the entire source M script separately for each view
  3. Create Reference queries from the cleaned base query
  4. Both derived queries reflect a change made to the shared base cleanup

Explanation

Correct Answer

A:

The changed requirement is 'The wholesale branch must be frozen to a separate independent M chain'. The additional response is 'Duplicate the query when independent transformation lineage is intended'.

Incorrect Answers

B:

This remains unsuitable for the original situation: Independent copies can diverge when the base cleaning changes. It also does not meet the changed need.

C:

This is the already implemented original solution: Create Reference queries from the cleaned base query. References share an upstream transformation lineage while allowing downstream variation. It does not itself solve the new requirement.

D:

This observes the original approach but is not an additional action: Both derived queries reflect a change made to the shared base cleanup.

Question 165

A raw landing query is used only as an intermediate staging step for three final tables. Which approach BEST meets the stated Microsoft Power BI requirement?

  1. Create a Product dimension and keep ProductKey in the Sales fact
  2. Load every intermediate staging query as a final fact table
  3. Enable load only for a dedicated troubleshooting output or model
  4. Disable Enable Load on the intermediate staging query

Explanation

Correct Answer

D:

Staging queries can support other transformations without creating extra model tables. For the stated case, Disable Enable Load on the intermediate staging query.

Incorrect Answers

A:

This addresses a separate source situation: A company stores Product, Category, and Brand repeated across every order line. It does not directly satisfy this case's priority.

B:

Unneeded model tables consume memory and clutter the field list. The proposed shortcut 'Load every intermediate staging query as a final fact table' fails the documented need.

C:

This might be appropriate after a different requirement arises: Analysts later need to inspect staging records in a separate diagnostic model. It is not the best initial response to the stated case.

Question 166

A raw landing query is used only as an intermediate staging step for three final tables. A colleague proposes: Load every intermediate staging query as a final fact table. Which explanation BEST identifies the defect in that proposal?

  1. Unneeded model tables consume memory and clutter the field list
  2. Staging queries can support other transformations without creating extra model tables
  3. Multiple unrelated facts are not a coherent product dimension
  4. The suggested approach is safe merely because its product name is familiar.

Explanation

Correct Answer

A:

Unneeded model tables consume memory and clutter the field list. This directly explains why the proposal 'Load every intermediate staging query as a final fact table' should not be used.

Incorrect Answers

B:

This is reasoning supporting the preferred solution 'Disable Enable Load on the intermediate staging query', but it does not directly name the defect in the proposed shortcut.

C:

This addresses a different case: A company stores Product, Category, and Brand repeated across every order line. It is not the specific defect in 'Load every intermediate staging query as a final fact table'.

D:

Product familiarity is not evidence of suitability. The actual defect in this proposal is: Unneeded model tables consume memory and clutter the field list.

Question 167

A raw landing query is used only as an intermediate staging step for three final tables. After implementing Disable Enable Load on the intermediate staging query, which observation BEST demonstrates that the intended result is actually working?

  1. Sales relates many-to-one to a unique Product dimension
  2. The team schedules a future check of whether The final tables refresh while the raw staging table does not appear in the model, but has not observed a result.
  3. The final tables refresh while the raw staging table does not appear in the model
  4. The report owner approves Disable Enable Load on the intermediate staging query without testing the resulting behavior.

Explanation

Correct Answer

C:

The observation 'The final tables refresh while the raw staging table does not appear in the model' directly tests the intended result. Staging queries can support other transformations without creating extra model tables.

Incorrect Answers

A:

This belongs to a different case: A company stores Product, Category, and Brand repeated across every order line. It does not validate the current change.

B:

A future test is not yet observed operational evidence. The verification must establish: The final tables refresh while the raw staging table does not appear in the model.

D:

Approval of a proposed design is not evidence of working behavior. The required observation is: The final tables refresh while the raw staging table does not appear in the model.

Question 168

The original scenario was: A raw landing query is used only as an intermediate staging step for three final tables. The initial solution is already in place. Now this new requirement arises: Analysts later need to inspect staging records in a separate diagnostic model. Which ADDITIONAL action BEST meets the changed condition?

  1. Enable load only for a dedicated troubleshooting output or model
  2. Load every intermediate staging query as a final fact table
  3. The final tables refresh while the raw staging table does not appear in the model
  4. Disable Enable Load on the intermediate staging query

Explanation

Correct Answer

A:

The changed requirement is 'Analysts later need to inspect staging records in a separate diagnostic model'. The additional response is 'Enable load only for a dedicated troubleshooting output or model'.

Incorrect Answers

B:

This remains unsuitable for the original situation: Unneeded model tables consume memory and clutter the field list. It also does not meet the changed need.

C:

This observes the original approach but is not an additional action: The final tables refresh while the raw staging table does not appear in the model.

D:

This is the already implemented original solution: Disable Enable Load on the intermediate staging query. Staging queries can support other transformations without creating extra model tables. It does not itself solve the new requirement.

Question 169

An analyst combines two tables that have the same columns but distinct store-region rows. Which approach BEST meets the stated Microsoft Power BI requirement?

  1. Merge the combined fact with the Store dimension using its key
  2. Parse amount and currency into appropriate numeric and text columns
  3. Merge the tables using StoreID when their rows represent different regions
  4. Use Append Queries instead of Merge Queries

Explanation

Correct Answer

D:

Append concatenates rows from similar schemas; merge adds columns by key. For the stated case, Use Append Queries instead of Merge Queries.

Incorrect Answers

A:

This might be appropriate after a different requirement arises: Region labels need to be attached from a separate Store dimension. It is not the best initial response to the stated case.

B:

This addresses a separate source situation: A transactions table includes a currency field stored as text such as 1,234.56 USD. It does not directly satisfy this case's priority.

C:

A join may duplicate or drop rows instead of adding region transactions. The proposed shortcut 'Merge the tables using StoreID when their rows represent different regions' fails the documented need.

Question 170

An analyst combines two tables that have the same columns but distinct store-region rows. A colleague proposes: Merge the tables using StoreID when their rows represent different regions. Which explanation BEST identifies the defect in that proposal?

  1. Append concatenates rows from similar schemas; merge adds columns by key
  2. The suggested approach is safe merely because its product name is familiar.
  3. A currency suffix prevents numeric conversion and loses currency meaning
  4. A join may duplicate or drop rows instead of adding region transactions

Explanation

Correct Answer

D:

A join may duplicate or drop rows instead of adding region transactions. This directly explains why the proposal 'Merge the tables using StoreID when their rows represent different regions' should not be used.

Incorrect Answers

A:

This is reasoning supporting the preferred solution 'Use Append Queries instead of Merge Queries', but it does not directly name the defect in the proposed shortcut.

B:

Product familiarity is not evidence of suitability. The actual defect in this proposal is: A join may duplicate or drop rows instead of adding region transactions.

C:

This addresses a different case: A transactions table includes a currency field stored as text such as 1,234.56 USD. It is not the specific defect in 'Merge the tables using StoreID when their rows represent different regions'.

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