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Microsoft PL-300 Bundle

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 PL-300 Practice Test 23

Question 220

A performance review finds a many-to-many relationship where a conformed dimension could be used. What redesign may help?

  1. Check which Sales-to-Date relationship is active.
  2. Repair Customer dimension uniqueness before declaring one-to-many cardinality.
  3. Introduce a unique conformed lookup dimension instead of a repeated-key direct link.
  4. Remove unnecessary bidirectional relationships and retain a single clear filter path.

Explanation

Correct Answer

C:

Introduce a unique conformed lookup dimension instead of a repeated-key direct link. Clear one-to-many relationships usually improve predictability in a star model.

Incorrect Answers

A:

That recommendation applies when a Date slicer unexpectedly filters orders through ShipDate rather than OrderDate. This solves “unexpectedly filters orders through ShipDate rather than OrderDate”; the stated issue is “relationship where a conformed dimension could be used”.

B:

A lookup's grain must be one record per relationship key. The deciding difference is “lookup has duplicates so the relationship auto-detects many-to-many” versus “relationship where a conformed dimension could be used”.

D:

Ambiguous paths can create incorrect or prohibited model filtering. That is a different operating condition from “relationship where a conformed dimension could be used”: “between Region and Sales and gets ambiguity errors”.

Question 221

A Geography hierarchy needs Country, State and City for drilldown in visuals. What should be created?

  1. Order the hierarchy Year then Quarter then Month then Day.
  2. Hide the key while retaining visible descriptive hierarchy columns.
  3. Build a model hierarchy with Country above State above City.
  4. Define ProductGroup as parent level and ProductSKU as leaf level.

Explanation

Correct Answer

C:

Build a model hierarchy with Country above State above City. An explicit hierarchy defines the intended drill levels.

Incorrect Answers

A:

Calendar drill paths should move from coarser to finer time levels. That is a different operating condition from “Country, State and City for drilldown in visuals”: “a Date hierarchy but puts MonthName above Year”.

B:

Technical relationship keys need not be shown to report consumers. It serves “uses its display attribute”, not “Country, State and City for drilldown in visuals”.

D:

Drilling should resolve from aggregate category to detailed product. That matters for “and must drill from group to individual items” rather than the condition “Country, State and City for drilldown in visuals”.

Question 222

An analyst builds a Date hierarchy but puts MonthName above Year. What should change?

  1. Define ProductGroup as parent level and ProductSKU as leaf level.
  2. Build a model hierarchy with Country above State above City.
  3. Hide the key while retaining visible descriptive hierarchy columns.
  4. Order the hierarchy Year then Quarter then Month then Day.

Explanation

Correct Answer

D:

Order the hierarchy Year then Quarter then Month then Day. Calendar drill paths should move from coarser to finer time levels.

Incorrect Answers

A:

Drilling should resolve from aggregate category to detailed product. That matters for “and must drill from group to individual items” rather than the condition “a Date hierarchy but puts MonthName above Year”.

B:

An explicit hierarchy defines the intended drill levels. The boundary it addresses is “Country, State and City for drilldown in visuals”, while this case concerns “a Date hierarchy but puts MonthName above Year”.

C:

Technical relationship keys need not be shown to report consumers. This solves “uses its display attribute”; the stated issue is “a Date hierarchy but puts MonthName above Year”.

Question 223

A product report has ProductGroup and ProductSKU attributes and must drill from group to individual items. What hierarchy fits?

  1. Order the hierarchy Year then Quarter then Month then Day.
  2. Define ProductGroup as parent level and ProductSKU as leaf level.
  3. Build a model hierarchy with Country above State above City.
  4. Hide the key while retaining visible descriptive hierarchy columns.

Explanation

Correct Answer

B:

Define ProductGroup as parent level and ProductSKU as leaf level. Drilling should resolve from aggregate category to detailed product.

Incorrect Answers

A:

Calendar drill paths should move from coarser to finer time levels. The deciding difference is “a Date hierarchy but puts MonthName above Year” versus “and must drill from group to individual items”.

C:

An explicit hierarchy defines the intended drill levels. That is a different operating condition from “and must drill from group to individual items”: “Country, State and City for drilldown in visuals”.

D:

Technical relationship keys need not be shown to report consumers. It serves “uses its display attribute”, not “and must drill from group to individual items”.

Question 224

A geography report groups identical city names in different countries together. What model attribute helps?

  1. Include a unique geographic key and Country in the grouping hierarchy.
  2. Order the hierarchy Year then Quarter then Month then Day.
  3. Build a model hierarchy with Country above State above City.
  4. Hide the key while retaining visible descriptive hierarchy columns.

Explanation

Correct Answer

A:

Include a unique geographic key and Country in the grouping hierarchy. A city label alone may not identify a unique location.

Incorrect Answers

B:

Calendar drill paths should move from coarser to finer time levels. The present requirement is “groups identical city names in different countries together”; “a Date hierarchy but puts MonthName above Year” is a distinct situation.

C:

An explicit hierarchy defines the intended drill levels. That matters for “Country, State and City for drilldown in visuals” rather than the condition “groups identical city names in different countries together”.

D:

Technical relationship keys need not be shown to report consumers. The boundary it addresses is “uses its display attribute”, while this case concerns “groups identical city names in different countries together”.

Question 225

An analyst wants to hide a technical key without breaking a hierarchy that uses its display attribute. What should be done?

  1. Build a model hierarchy with Country above State above City.
  2. Order the hierarchy Year then Quarter then Month then Day.
  3. Hide the key while retaining visible descriptive hierarchy columns.
  4. Include a unique geographic key and Country in the grouping hierarchy.

Explanation

Correct Answer

C:

Hide the key while retaining visible descriptive hierarchy columns. Technical relationship keys need not be shown to report consumers.

Incorrect Answers

A:

An explicit hierarchy defines the intended drill levels. The boundary it addresses is “Country, State and City for drilldown in visuals”, while this case concerns “uses its display attribute”.

B:

Calendar drill paths should move from coarser to finer time levels. This solves “a Date hierarchy but puts MonthName above Year”; the stated issue is “uses its display attribute”.

D:

A city label alone may not identify a unique location. Its application is “groups identical city names in different countries together”, not the need “uses its display attribute”.

Question 226

A table visual displays the same Sales measure for each Product category because the dimension is disconnected. What is missing?

  1. Verify merge joins and table grain before loading the inflated fact.
  2. Create or repair the active Product-to-Sales relationship.
  3. Recognize that calendar periods without matching facts can yield blank measures.
  4. Configure the Region dimension to filter the Sales fact.

Explanation

Correct Answer

B:

Create or repair the active Product-to-Sales relationship. Without a filter path, category rows do not constrain the fact measure.

Incorrect Answers

A:

Data preparation row multiplication can distort measures even when model relationships are valid. Its application is “Verify merge joins and table grain before loading”, not the need “the dimension is disconnected”.

C:

No matching fact rows may produce blanks even with a valid Date dimension. It serves “outside all fact rows and shows blank periods”, not “the dimension is disconnected”.

D:

Slicer attributes must propagate filters to the measured fact. The present requirement is “the dimension is disconnected”; “filter direction points the wrong way” is a distinct situation.

Question 227

A Slicer on Region has no effect on Sales despite a relation because filter direction points the wrong way. What should be corrected?

  1. Recognize that calendar periods without matching facts can yield blank measures.
  2. Create or repair the active Product-to-Sales relationship.
  3. Configure the Region dimension to filter the Sales fact.
  4. Verify merge joins and table grain before loading the inflated fact.

Explanation

Correct Answer

C:

Configure the Region dimension to filter the Sales fact. Slicer attributes must propagate filters to the measured fact.

Incorrect Answers

A:

No matching fact rows may produce blanks even with a valid Date dimension. The present requirement is “filter direction points the wrong way”; “outside all fact rows and shows blank periods” is a distinct situation.

B:

Without a filter path, category rows do not constrain the fact measure. That matters for “the dimension is disconnected” rather than the condition “filter direction points the wrong way”.

D:

Data preparation row multiplication can distort measures even when model relationships are valid. This solves “Verify merge joins and table grain before loading”; the stated issue is “filter direction points the wrong way”.

Question 228

A DAX measure uses a Date table with marked dates outside all fact rows and shows blank periods. Why might that occur?

  1. Configure the Region dimension to filter the Sales fact.
  2. Recognize that calendar periods without matching facts can yield blank measures.
  3. Verify merge joins and table grain before loading the inflated fact.
  4. Create or repair the active Product-to-Sales relationship.

Explanation

Correct Answer

B:

Recognize that calendar periods without matching facts can yield blank measures. No matching fact rows may produce blanks even with a valid Date dimension.

Incorrect Answers

A:

Slicer attributes must propagate filters to the measured fact. This solves “filter direction points the wrong way”; the stated issue is “outside all fact rows and shows blank periods”.

C:

Data preparation row multiplication can distort measures even when model relationships are valid. Its application is “Verify merge joins and table grain before loading”, not the need “outside all fact rows and shows blank periods”.

D:

Without a filter path, category rows do not constrain the fact measure. That is a different operating condition from “outside all fact rows and shows blank periods”: “the dimension is disconnected”.

Question 229

A model has OrderKey duplicated on the order-header table but each key should identify one order. What is needed?

  1. Configure the Region dimension to filter the Sales fact.
  2. Create or repair the active Product-to-Sales relationship.
  3. Diagnose and enforce order-header key uniqueness.
  4. Recognize that calendar periods without matching facts can yield blank measures.

Explanation

Correct Answer

C:

Diagnose and enforce order-header key uniqueness. Order header as a lookup requires one row per OrderKey.

Incorrect Answers

A:

Slicer attributes must propagate filters to the measured fact. That is a different operating condition from “table but each key should identify one order”: “filter direction points the wrong way”.

B:

Without a filter path, category rows do not constrain the fact measure. It serves “the dimension is disconnected”, not “table but each key should identify one order”.

D:

No matching fact rows may produce blanks even with a valid Date dimension. That matters for “outside all fact rows and shows blank periods” rather than the condition “table but each key should identify one order”.

Question 230

A report shows inflated TotalRevenue after adding a one-to-many merge that multiplies transaction rows. What should be checked?

  1. Diagnose and enforce order-header key uniqueness.
  2. Verify merge joins and table grain before loading the inflated fact.
  3. Create or repair the active Product-to-Sales relationship.
  4. Configure the Region dimension to filter the Sales fact.

Explanation

Correct Answer

B:

Verify merge joins and table grain before loading the inflated fact. Data preparation row multiplication can distort measures even when model relationships are valid.

Incorrect Answers

A:

Order header as a lookup requires one row per OrderKey. That matters for “table but each key should identify one order” rather than the condition “Verify merge joins and table grain before loading”.

C:

Without a filter path, category rows do not constrain the fact measure. This solves “the dimension is disconnected”; the stated issue is “Verify merge joins and table grain before loading”.

D:

Slicer attributes must propagate filters to the measured fact. The deciding difference is “filter direction points the wrong way” versus “Verify merge joins and table grain before loading”.