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Microsoft PL-300 Practice Test 5

Question 40

An operations system exposes entities through a standards-compliant OData endpoint with queryable entity sets. What is the MOST appropriate Power BI design decision?

  1. Use the Folder connector and Combine Files workflow.
  2. Use the OData Feed connector with the service URL.
  3. Use the SQL Server database connector with approved authentication.
  4. Use the SharePoint Online List connector.

Explanation

Correct Answer

B:

The OData connector consumes the endpoint's metadata and entity navigation surface, supporting acquiring OData service entities.

Incorrect Answers

A:

Folder enumeration and sample-file transformation combine consistently shaped files. It would address combining recurring local extract files, not acquiring OData service entities.

C:

The database connector supports relational schema browsing and model loading or DirectQuery. It may suit accessing a managed SQL operational database, not acquiring OData service entities.

D:

The list connector retrieves list item fields and metadata instead of pretending the list is a file. It is useful for loading structured SharePoint list items, not for acquiring OData service entities.

Question 41

A SQL warehouse requires Windows integrated authentication through the organization network. Which configuration should the team choose?

  1. Configure organizational-account OAuth authentication for the supported connector.
  2. Use the connector's supported Web API credential mode and protected key storage.
  3. Choose the supported Windows authentication mode and gateway identity.
  4. Use Anonymous authentication only for the approved public endpoint.

Explanation

Correct Answer

C:

Windows authentication uses an approved directory context for the internal database, supporting integrated corporate database access.

Incorrect Answers

A:

Organizational OAuth uses user or service identity tokens instead of pasting anonymous keys. It is useful for delegated enterprise identity authentication, not for integrated corporate database access.

B:

The Web API credential mechanism supplies an authorized API key without embedding it in query text. Its scope is protected API-key authentication, not integrated corporate database access.

D:

Anonymous mode avoids sending unnecessary secrets to a source designed for public reads. It would address permitted unauthenticated catalog reads, not integrated corporate database access.

Question 42

A public weather endpoint supplies openly available attributes and has no confidential input. What is the MOST appropriate Power BI design decision?

  1. Reenable privacy-level enforcement and correct source-specific classifications.
  2. Mark the payroll source Private in Power Query source privacy settings.
  3. Assign Organizational privacy level to the approved internal source.
  4. Assign Public privacy level to that public source.

Explanation

Correct Answer

D:

Public sources are permitted to contribute data to higher-trust mashups without treating their values as secrets, supporting appropriately classify open-source information.

Incorrect Answers

A:

Ignoring privacy restrictions can allow query behavior that transmits restricted values to another source. It would address restore privacy isolation after unsafe bypass, not appropriately classify open-source information.

B:

Private isolation limits folding and combining that could expose protected source values to another endpoint. That targets isolate confidential payroll during data combination, not appropriately classify open-source information.

C:

Organizational privacy permits compatible combinations within the trusted organization boundary. It may suit controlled internal source combination, not appropriately classify open-source information.

Question 43

A URL query fails when a user supplies a string in place of the expected date input. Which configuration should the team choose?

  1. Configure the parameter's data type and allowed values appropriately.
  2. Update the published semantic model's parameter values and applicable credentials.
  3. Create a Power Query year parameter and reference it in the source transformation.
  4. Parameterize server and database names and set environment-appropriate values.

Explanation

Correct Answer

A:

Typed and constrained parameters reduce invalid query argument combinations, supporting safe parameter value validation.

Incorrect Answers

B:

Published parameters and credential configuration are managed in the service independently of the local file. Its scope is correct service-side production parameter values, not safe parameter value validation.

C:

A parameter provides a typed reusable input to multiple query expressions. That is meant for reusable year input in Power Query, not safe parameter value validation.

D:

Source parameters separate environment configuration from the transformation logic. It would address changing SQL endpoints safely across environments, not safe parameter value validation.

Question 44

Several production datasets need managed gateway access even when one gateway node is unavailable. What is the MOST appropriate Power BI design decision?

  1. Install and configure an on-premises data gateway with approved data source mappings.
  2. Deploy a supported gateway cluster with redundant members.
  3. Migrate to an on-premises data gateway in standard mode with delegated administration.
  4. Configure the supported cloud connection without an unnecessary on-premises gateway.

Explanation

Correct Answer

B:

A gateway cluster can distribute requests and provide availability when a member fails, supporting resilient enterprise gateway access.

Incorrect Answers

A:

The gateway brokers service refresh traffic to internal network sources. It would address refresh from isolated corporate SQL, not resilient enterprise gateway access.

C:

Standard gateway supports shared enterprise data source administration beyond one user's personal gateway. It may suit centrally administered gateway reuse, not resilient enterprise gateway access.

D:

A public cloud source supported by native service connectivity can refresh without on-premises tunneling. It is useful for direct managed cloud refresh, not for resilient enterprise gateway access.

Question 45

A live monitoring chart needs automatic repeated queries to a supported DirectQuery source. Which configuration should the team choose?

  1. Configure incremental refresh with RangeStart and RangeEnd filter parameters.
  2. Introduce supported query-reduction or Apply controls for high-interaction filters.
  3. Configure automatic page refresh within capacity and source limits.
  4. Increase semantic model scheduled refresh frequency within its license and source limits.

Explanation

Correct Answer

C:

Automatic page refresh updates eligible DirectQuery pages on a defined interval, supporting recurring real-time page updates.

Incorrect Answers

A:

Incremental refresh partitions historical and changing rows to avoid full reprocessing. It is useful for partition refresh by changing date window, not for recurring real-time page updates.

B:

Query reduction delays or consolidates source requests rather than firing on every intermediate selection. Its scope is limit DirectQuery filter-query bursts, not recurring real-time page updates.

D:

Refresh schedules determine when import data is reloaded from sources. It would address align Import freshness with business cadence, not recurring real-time page updates.

Question 46

A company revoked access to an old external source and wants Power BI to discard cached connector credentials. What is the MOST appropriate Power BI design decision?

  1. Map the semantic model to the correct gateway connection and data source.
  2. Change the source endpoint in Power Query data source settings.
  3. Update the source credentials in the relevant Power BI connection settings.
  4. Clear permissions for the old data source and reauthenticate only when authorized.

Explanation

Correct Answer

D:

Clearing source permissions removes stored credential bindings for that endpoint; this helps remove obsolete stored source credentials.

Incorrect Answers

A:

Service refresh requires matching connection paths and authentication mappings. It would address fix published model gateway binding, not remove obsolete stored source credentials.

B:

Connection settings can be updated without rebuilding later transform steps. That targets retain transformations after server relocation, not remove obsolete stored source credentials.

C:

Refresh authentication is separate from the source address and cached data. It may suit repair expired cloud credentials, not remove obsolete stored source credentials.

Question 47

A JSON response contains arrays of records, and the report must present each record as rows. Which configuration should the team choose?

  1. Parse JSON and expand the list and nested records in Power Query.
  2. Use the Web connector's detected table or supported HTML table selection.
  3. Use the CSV connector with the correct delimiter and quoting rules.
  4. Set the source text encoding to the file's actual character set.

Explanation

Correct Answer

A:

JSON navigation and expansion converts hierarchical payloads to tabular columns, supporting flatten structured JSON records.

Incorrect Answers

B:

Table extraction selects semantic rows and columns from supported web content. Its scope is retrieve tabular website data, not flatten structured JSON records.

C:

Delimiter and quotation parsing prevents embedded separators from splitting one logical field. That is meant for preserve quoted CSV field boundaries, not flatten structured JSON records.

D:

Correct code-page decoding preserves Unicode and legacy encoded characters. It would address decode supplier text correctly, not flatten structured JSON records.

Question 48

A developer wants evidence about whether Power Query steps are executed as native SQL or locally. What is the MOST appropriate Power BI design decision?

  1. Move supported foldable filters before the nonfolding custom transformation.
  2. Inspect View Native Query and query-folding indicators for the selected step.
  3. Stage an approved shared reference result and control query evaluation rather than duplicate repeated API calls.
  4. Filter rows near the source step while preserving query folding.

Explanation

Correct Answer

B:

Query folding indicators and native statements expose pushdown behavior where supported; this helps verify relational query folding.

Incorrect Answers

A:

Filter order can preserve upstream database pushdown before an operation prevents further folding. It would address avoid breaking query folding too early, not verify relational query folding.

C:

Reusing a controlled source evaluation may reduce repeated requests when supported by the refresh plan. It may suit manage rate-limited API request duplication, not verify relational query folding.

D:

Folded filtering delegates predicates to the database and reduces transferred rows. It is useful for push restricted date filters to SQL, not for verifying relational query folding.

Question 49

An analyst is given a single workbook file available through a stable SharePoint URL rather than a whole library. Which configuration should the team choose?

  1. Use the SharePoint Folder connector and filter to the desired library path.
  2. Use the SharePoint Online List connector for the hosted list.
  3. Use the supported authenticated file or SharePoint connection for that workbook.
  4. Connect to the governed published semantic model rather than reading underlying site files anew.

Explanation

Correct Answer

C:

File-scoped connections can retrieve the specified file without scanning every unrelated folder, supporting connect to one secured cloud workbook.

Incorrect Answers

A:

The SharePoint Folder connector enumerates files from site libraries and can combine standard workbook content. It is useful for combine library-hosted workbook files, not for connect to one secured cloud workbook.

B:

List-specific connectors retrieve structured list entries and columns. Its scope is ingest Microsoft Lists rows, not connect to one secured cloud workbook.

D:

Shared semantic models preserve upstream governed measures and row security. It would address reuse central analytics objects rather than raw files, not connect to one secured cloud workbook.

Question 50

A published semantic model refresh fails because an on-premises database is unreachable after a firewall change. What is the MOST appropriate Power BI design decision?

  1. Validate upstream warehouse load timestamps and source freshness SLAs.
  2. Fix the conversion or error-handling step for invalid numeric source values.
  3. Inspect and correct the Power Query date-filter step.
  4. Repair gateway network connectivity and the permitted database route.

Explanation

Correct Answer

D:

Gateway refresh needs reachable internal endpoints and supported network permissions; this helps restore private database refresh connectivity.

Incorrect Answers

A:

A successful Power BI refresh cannot invent source updates that have not yet arrived. It would address distinguish stale source data from refresh failure, not restore private database refresh connectivity.

B:

Type conversion errors occur when raw values cannot be parsed as the specified type. That targets repair numeric conversion during refresh, not restore private database refresh connectivity.

C:

Source query filters determine which records enter the loaded model. It may suit recover unintentionally filtered historical rows, not restore private database refresh connectivity.


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