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Microsoft PL-300 Practice Test 7

Question 60

An intentionally public JSON catalog has no identity requirement and should be retrieved without adding account credentials. What is the best method for this analysis requirement?

  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

D:

Anonymous mode avoids sending unnecessary secrets to a source designed for public reads, supporting permitted unauthenticated catalog reads.

Incorrect Answers

A:

Organizational OAuth uses user or service identity tokens instead of pasting anonymous keys. It would address delegated enterprise identity authentication, not permitted unauthenticated catalog reads.

B:

The Web API credential mechanism supplies an authorized API key without embedding it in query text. That targets protected API-key authentication, not permitted unauthenticated catalog reads.

C:

Windows authentication uses an approved directory context for the internal database. It may suit integrated corporate database access, not permitted unauthenticated catalog reads.

Question 61

An analyst bypassed privacy checks globally to fix slow joins but now must restore source data isolation. Which implementation best addresses this scenario?

  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

A:

Ignoring privacy restrictions can allow query behavior that transmits restricted values to another source; this helps restore privacy isolation after unsafe bypass.

Incorrect Answers

B:

Private isolation limits folding and combining that could expose protected source values to another endpoint. Its scope is isolate confidential payroll during data combination, not restore privacy isolation after unsafe bypass.

C:

Organizational privacy permits compatible combinations within the trusted organization boundary. That is meant for controlled internal source combination, not restore privacy isolation after unsafe bypass.

D:

Public sources are permitted to contribute data to higher-trust mashups without treating their values as secrets. It would address appropriately classify open-source information, not restore privacy isolation after unsafe bypass.

Question 62

The PBIX uses a parameter in a refresh query but the service deployment still reads the test server. What is the best method for this analysis requirement?

  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

B:

Published parameters and credential configuration are managed in the service independently of the local file; this helps correct service-side production parameter values.

Incorrect Answers

A:

Typed and constrained parameters reduce invalid query argument combinations. It would address safe parameter value validation, not correct service-side production parameter values.

C:

A parameter provides a typed reusable input to multiple query expressions. It may suit reusable year input in Power Query, not correct service-side production parameter values.

D:

Source parameters separate environment configuration from the transformation logic. It is useful for changing SQL endpoints safely across environments, not for correcting service-side production parameter values.

Question 63

A single analyst configured a personal gateway, but the organization needs centrally managed shared refresh sources. Which implementation best addresses this scenario?

  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

C:

Standard gateway supports shared enterprise data source administration beyond one user's personal gateway, supporting centrally administered gateway reuse.

Incorrect Answers

A:

The gateway brokers service refresh traffic to internal network sources. It is useful for refresh from isolated corporate SQL, not for centrally administered gateway reuse.

B:

A gateway cluster can distribute requests and provide availability when a member fails. Its scope is resilient enterprise gateway access, not centrally administered gateway reuse.

D:

A public cloud source supported by native service connectivity can refresh without on-premises tunneling. It would address direct managed cloud refresh, not centrally administered gateway reuse.

Question 64

A historical import dashboard is stale because its scheduled data load happens weekly although business expects daily numbers. What is the best method for this analysis requirement?

  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

D:

Refresh schedules determine when import data is reloaded from sources; this helps align Import freshness with business cadence.

Incorrect Answers

A:

Incremental refresh partitions historical and changing rows to avoid full reprocessing. It would address partition refresh by changing date window, not align Import freshness with business cadence.

B:

Query reduction delays or consolidates source requests rather than firing on every intermediate selection. That targets limit DirectQuery filter-query bursts, not align Import freshness with business cadence.

C:

Automatic page refresh updates eligible DirectQuery pages on a defined interval. It may suit recurring real-time page updates, not align Import freshness with business cadence.

Question 65

The service shows a gateway mapping mismatch after a PBIX publication changed connection details. Which implementation best addresses this scenario?

  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

A:

Service refresh requires matching connection paths and authentication mappings; this helps fix published model gateway binding.

Incorrect Answers

B:

Connection settings can be updated without rebuilding later transform steps. Its scope is retain transformations after server relocation, not fix published model gateway binding.

C:

Refresh authentication is separate from the source address and cached data. That is meant for repair expired cloud credentials, not fix published model gateway binding.

D:

Clearing source permissions removes stored credential bindings for that endpoint. It would address remove obsolete stored source credentials, not fix published model gateway binding.

Question 66

A web page includes an HTML table but the team mistakenly copies its layout as unstructured text. What is the best method for this analysis requirement?

  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

B:

Table extraction selects semantic rows and columns from supported web content, supporting retrieve tabular website data.

Incorrect Answers

A:

JSON navigation and expansion converts hierarchical payloads to tabular columns. It would address flatten structured JSON records, not retrieve tabular website data.

C:

Delimiter and quotation parsing prevents embedded separators from splitting one logical field. It may suit preserve quoted CSV field boundaries, not retrieve tabular website data.

D:

Correct code-page decoding preserves Unicode and legacy encoded characters. It is useful for decode supplier text correctly, not for retrieve tabular website data.

Question 67

A source API has strict rate limits but a query repeats an expensive call in multiple branches. Which implementation best addresses this scenario?

  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

C:

Reusing a controlled source evaluation may reduce repeated requests when supported by the refresh plan; this helps manage rate-limited API request duplication.

Incorrect Answers

A:

Filter order can preserve upstream database pushdown before an operation prevents further folding. It is useful for avoiding breaking query folding too early, not for managing rate-limited API request duplication.

B:

Query folding indicators and native statements expose pushdown behavior where supported. Its scope is verify relational query folding, not manage rate-limited API request duplication.

D:

Folded filtering delegates predicates to the database and reduces transferred rows. It would address push restricted date filters to SQL, not manage rate-limited API request duplication.

Question 68

A team needs to acquire a dataset already published by another team with certified relationships. What is the best method for this analysis requirement?

  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

D:

Shared semantic models preserve upstream governed measures and row security, supporting reuse central analytics objects rather than raw files.

Incorrect Answers

A:

The SharePoint Folder connector enumerates files from site libraries and can combine standard workbook content. It would address combine library-hosted workbook files, not reuse central analytics objects rather than raw files.

B:

List-specific connectors retrieve structured list entries and columns. That targets ingest Microsoft Lists rows, not reuse central analytics objects rather than raw files.

C:

File-scoped connections can retrieve the specified file without scanning every unrelated folder. It may suit connect to one secured cloud workbook, not reuse central analytics objects rather than raw files.

Question 69

A refresh succeeds but visuals show yesterday's numbers because the warehouse itself is updated only at midnight. Which implementation best addresses this scenario?

  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

A:

A successful Power BI refresh cannot invent source updates that have not yet arrived, supporting distinguish stale source data from refresh failure.

Incorrect Answers

B:

Type conversion errors occur when raw values cannot be parsed as the specified type. Its scope is repair numeric conversion during refresh, not distinguish stale source data from refresh failure.

C:

Source query filters determine which records enter the loaded model. That is meant for recover unintentionally filtered historical rows, not distinguish stale source data from refresh failure.

D:

Gateway refresh needs reachable internal endpoints and supported network permissions. It would address restore private database refresh connectivity, not distinguish stale source data from refresh failure.

Question 70

A report must filter data according to security rules already defined in a shared source model. What is the best method for this analysis requirement?

  1. Create a separate governed development semantic model for the experiment.
  2. Reuse that semantic model with its existing RLS and permission assignments.
  3. Build reports against the certified shared semantic model.
  4. Create or reuse an approved Power BI dataflow for repeatable upstream transformations.

Explanation

Correct Answer

B:

A connected report can inherit semantic-model security rather than recreate rules independently; this helps preserve governed data-access semantics.

Incorrect Answers

A:

Separate development assets prevent unapproved changes to certified enterprise metrics. It would address isolate experimental model changes, not preserve governed data-access semantics.

C:

Central models keep shared measures and relationships under one steward. It may suit consistent enterprise KPI reuse, not preserve governed data-access semantics.

D:

Dataflows centralize Power Query transformation logic for multiple downstream consumers. It is useful for reusable data preparation across reports, not for preserving governed data-access semantics.


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