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Microsoft MB-820 Bundle

Exam Code: MB-820

Exam Name Microsoft Dynamics 365 Business Central Developer

Certification Provider: Microsoft

Corresponding Certification: Microsoft Certified: Dynamics 365 Business Central Developer Associate

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Microsoft Dynamics 365 Business Central Developer (MB-820) Practice Tests

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Microsoft MB-820 Practice Test 37

Question 360

At fictional Keystone Apparel, the Business Central development team is supporting product catalog and fulfillment and reviewing automated testing and diagnostics during a release qualification test (MB820-5.1-161). The observed development issue is that a test checks that a report launches but never confirms its output matches stored document data. Which observed result would most clearly show the intended correction works?

  1. Multiple tests apply the same business expectation consistently.
  2. The test fails when the action points to a wrong record despite a visible button.
  3. Historical records remain correct across the version change.
  4. A changed report that omits lines or totals fails the test.

Explanation

Correct Answer

D:

This is the outcome that directly verifies the intended correction: a changed report that omits lines or totals fails the test. The related solution is to assert expected dataset values or generated output with representative fixtures; it is based on the principle that report tests should verify content, not merely execution.

Incorrect Answers

A:

“Multiple tests apply the same business expectation consistently” concerns the alternative task “use shared test helpers and a clear arrange-act-assert structure”, but the stated failure is that a test checks that a report launches but never confirms its output matches stored document data. The required measure is to a changed report that omits lines or totals fails the test.

B:

The proposed “The test fails when the action points to a wrong record despite a visible button” tests a different control: use the appropriate TestPage interaction and assert resulting business state. The reported condition is that a test checks that a report launches but never confirms its output matches stored document data; the more direct action is to a changed report that omits lines or totals fails the test.

C:

“Historical records remain correct across the version change” supports the separate task “seed an older app version with representative data then test upgrade preservation”, not the reported problem: a test checks that a report launches but never confirms its output matches stored document data. This case instead calls for “A changed report that omits lines or totals fails the test”.

Question 361

At fictional Delta Repairs, the Business Central development team is supporting repair order management and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-085). The observed development issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. Which AL development or design response most directly addresses this issue?

  1. Normalize supported date parsing with an explicit agreed format and reject ambiguous values.
  2. Review field mapping and conversion logic against the partner schema.
  3. Define an XMLport schema with the intended parent/child nodes and matching element names.
  4. Version and validate the XMLport node contract before deployment.

Explanation

Correct Answer

B:

The most direct corrective response is to review field mapping and conversion logic against the partner schema. This addresses the specific failure where a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. Acceptance evidence is that test feeds retain identifiers and preserve expected field meanings.

Incorrect Answers

A:

The proposed “Normalize supported date parsing with an explicit agreed format and reject ambiguous values” tests a different control: normalize supported date parsing with an explicit agreed format and reject ambiguous values. The reported condition is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields; the more direct action is to review field mapping and conversion logic against the partner schema.

C:

“Define an XMLport schema with the intended parent/child nodes and matching element names” concerns the separate step “define an XMLport schema with the intended parent/child nodes and matching element names”. The reported issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields, so the direct response is to review field mapping and conversion logic against the partner schema.

D:

“Version and validate the XMLport node contract before deployment” concerns the alternative task “version and validate the XMLport node contract before deployment”, but the stated failure is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. The required measure is to review field mapping and conversion logic against the partner schema.

Question 362

At fictional Delta Repairs, the Business Central development team is supporting repair order management and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-085). The observed development issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. Which Business Central or AL development principle best explains the right response?

  1. Automated imports require headless, stream-friendly interfaces.
  2. Serialization schemas and authorization jointly determine data exposure.
  3. XMLport parsing depends on explicit file-format properties.
  4. Schema-level equivalence matters more than superficially successful imports.

Explanation

Correct Answer

D:

The governing principle is that schema-level equivalence matters more than superficially successful imports. The engineering response is to review field mapping and conversion logic against the partner schema. Verification should show that test feeds retain identifiers and preserve expected field meanings.

Incorrect Answers

A:

“Automated imports require headless, stream-friendly interfaces” supports the separate task “use supported XMLport run/save/load or stream mechanisms appropriate to automation”, not the reported problem: a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. This case instead calls for “review field mapping and conversion logic against the partner schema”.

B:

“Serialization schemas and authorization jointly determine data exposure” concerns the separate step “remove unneeded nodes and enforce permissions before streaming records”. The reported issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields, so the direct response is to review field mapping and conversion logic against the partner schema.

C:

“XMLport parsing depends on explicit file-format properties” concerns the alternative task “configure the XMLport format and field separators to match the documented external contract”, but the stated failure is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. The required measure is to review field mapping and conversion logic against the partner schema.

Question 363

At fictional Delta Repairs, the Business Central development team is supporting repair order management and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-085). The observed development issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. Which observed result would most clearly show the intended correction works?

  1. Exported XML follows the partner's expected element hierarchy.
  2. Test feeds retain identifiers and preserve expected field meanings.
  3. The scheduled job processes the stream without user interaction.
  4. Each exported header includes its correct set of line records.

Explanation

Correct Answer

B:

This is the outcome that directly verifies the intended correction: test feeds retain identifiers and preserve expected field meanings. The related solution is to review field mapping and conversion logic against the partner schema; it is based on the principle that schema-level equivalence matters more than superficially successful imports.

Incorrect Answers

A:

“Exported XML follows the partner's expected element hierarchy” concerns the separate step “define an XMLport schema with the intended parent/child nodes and matching element names”. The reported issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields, so the direct response is to test feeds retain identifiers and preserve expected field meanings.

C:

The proposed “The scheduled job processes the stream without user interaction” tests a different control: use supported XMLport run/save/load or stream mechanisms appropriate to automation. The reported condition is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields; the more direct action is to test feeds retain identifiers and preserve expected field meanings.

D:

“Each exported header includes its correct set of line records” supports the separate task “model the related table elements and record linkage within the XMLport”, not the reported problem: a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. This case instead calls for “Test feeds retain identifiers and preserve expected field meanings”.

Question 364

At fictional Delta Repairs, the Business Central development team is supporting repair order management and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-085). The observed development issue is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. Which recurring engineering check would best prevent this issue from returning?

  1. Audit file-export field inventories after schema changes.
  2. Test partial-failure and retry behavior on representative files.
  3. Run contract tests for every EDI partner change.
  4. Maintain mapping fixtures for changed partner specifications.

Explanation

Correct Answer

D:

The ongoing check is to maintain mapping fixtures for changed partner specifications. This helps detect recurrence when a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. The associated correction is to review field mapping and conversion logic against the partner schema; a confirming result is that test feeds retain identifiers and preserve expected field meanings.

Incorrect Answers

A:

“Audit file-export field inventories after schema changes” concerns the alternative task “remove unneeded nodes and enforce permissions before streaming records”, but the stated failure is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. The required measure is to maintain mapping fixtures for changed partner specifications.

B:

The proposed “Test partial-failure and retry behavior on representative files” tests a different control: design an appropriate transactional import/error strategy and reconcile accepted versus rejected records. The reported condition is that a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields; the more direct action is to maintain mapping fixtures for changed partner specifications.

C:

“Run contract tests for every EDI partner change” supports the separate task “version and validate the XMLport node contract before deployment”, not the reported problem: a scheduled EDI feed replaces identifiers because the XMLport maps external codes to the wrong fields. This case instead calls for “Maintain mapping fixtures for changed partner specifications”.

Question 365

At fictional Brookstone Labs, the Business Central development team is supporting research procurement and reviewing object model and application extensibility during a tenant acceptance test (MB820-3.6-120). The observed development issue is that a team expects a query object to support arbitrary data modification by the consumer. Which observed result would most clearly show the intended correction works?

  1. A reconciliation report produces correct grouped amounts with lower runtime.
  2. The analytical output is read-only while update operations use authorized logic.
  3. Consumers can read the result without unsupported update attempts.
  4. Results retain customers without invoices with appropriately empty joined values.

Explanation

Correct Answer

B:

This is the outcome that directly verifies the intended correction: the analytical output is read-only while update operations use authorized logic. The related solution is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes; it is based on the principle that query objects are not a replacement for transactional business APIs.

Incorrect Answers

A:

The proposed “A reconciliation report produces correct grouped amounts with lower runtime” tests a different control: reuse a suitable query data source or aggregate dataset design for report data. The reported condition is that a team expects a query object to support arbitrary data modification by the consumer; the more direct action is to the analytical output is read-only while update operations use authorized logic.

C:

“Consumers can read the result without unsupported update attempts” concerns the separate step “document the query's read-only contract and choose an API page for supported mutations”. The reported issue is that a team expects a query object to support arbitrary data modification by the consumer, so the direct response is to the analytical output is read-only while update operations use authorized logic.

D:

“Results retain customers without invoices with appropriately empty joined values” concerns the alternative task “select a supported outer-join or alternative query design that preserves missing related records”, but the stated failure is that a team expects a query object to support arbitrary data modification by the consumer. The required measure is to the analytical output is read-only while update operations use authorized logic.

Question 366

At fictional Brookstone Labs, the Business Central development team is supporting research procurement and reviewing object model and application extensibility during a tenant acceptance test (MB820-3.6-120). The observed development issue is that a team expects a query object to support arbitrary data modification by the consumer. Which AL development or design response most directly addresses this issue?

  1. Expose appropriate query columns and links instead of exporting full tables with unused fields.
  2. Reevaluate grouping and totals when adding the dimension to the query projection.
  3. Use the query for read-oriented analysis and a suitable record/codeunit workflow for writes.
  4. Reuse a suitable query data source or aggregate dataset design for report data.

Explanation

Correct Answer

C:

The most direct corrective response is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes. This addresses the specific failure where a team expects a query object to support arbitrary data modification by the consumer. Acceptance evidence is that the analytical output is read-only while update operations use authorized logic.

Incorrect Answers

A:

“Expose appropriate query columns and links instead of exporting full tables with unused fields” supports the separate task “expose appropriate query columns and links instead of exporting full tables with unused fields”, not the reported problem: a team expects a query object to support arbitrary data modification by the consumer. This case instead calls for “use the query for read-oriented analysis and a suitable record/codeunit workflow for writes”.

B:

“Reevaluate grouping and totals when adding the dimension to the query projection” concerns the separate step “reevaluate grouping and totals when adding the dimension to the query projection”. The reported issue is that a team expects a query object to support arbitrary data modification by the consumer, so the direct response is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes.

D:

The proposed “Reuse a suitable query data source or aggregate dataset design for report data” tests a different control: reuse a suitable query data source or aggregate dataset design for report data. The reported condition is that a team expects a query object to support arbitrary data modification by the consumer; the more direct action is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes.

Question 367

At fictional Brookstone Labs, the Business Central development team is supporting research procurement and reviewing object model and application extensibility during a tenant acceptance test (MB820-3.6-120). The observed development issue is that a team expects a query object to support arbitrary data modification by the consumer. Which Business Central or AL development principle best explains the right response?

  1. Reports can use query-based aggregation for efficient datasets.
  2. Query join semantics determine cardinality and optional-record handling.
  3. Query projections support purpose-limited data access.
  4. Query objects are not a replacement for transactional business APIs.

Explanation

Correct Answer

D:

The governing principle is that query objects are not a replacement for transactional business APIs. The engineering response is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes. Verification should show that the analytical output is read-only while update operations use authorized logic.

Incorrect Answers

A:

“Reports can use query-based aggregation for efficient datasets” concerns the separate step “reuse a suitable query data source or aggregate dataset design for report data”. The reported issue is that a team expects a query object to support arbitrary data modification by the consumer, so the direct response is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes.

B:

“Query join semantics determine cardinality and optional-record handling” concerns the alternative task “define the DataItemLink and join type that match the intended relationship”, but the stated failure is that a team expects a query object to support arbitrary data modification by the consumer. The required measure is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes.

C:

The proposed “Query projections support purpose-limited data access” tests a different control: expose appropriate query columns and links instead of exporting full tables with unused fields. The reported condition is that a team expects a query object to support arbitrary data modification by the consumer; the more direct action is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes.

Question 368

At fictional Brookstone Labs, the Business Central development team is supporting research procurement and reviewing object model and application extensibility during a tenant acceptance test (MB820-3.6-120). The observed development issue is that a team expects a query object to support arbitrary data modification by the consumer. Which recurring engineering check would best prevent this issue from returning?

  1. Compare totals after changes to report data source.
  2. Test matched and unmatched dataitem cases.
  3. Test one-to-many and missing-child relationships.
  4. Review query consumers for unintended write expectations.

Explanation

Correct Answer

D:

The ongoing check is to review query consumers for unintended write expectations. This helps detect recurrence when a team expects a query object to support arbitrary data modification by the consumer. The associated correction is to use the query for read-oriented analysis and a suitable record/codeunit workflow for writes; a confirming result is that the analytical output is read-only while update operations use authorized logic.

Incorrect Answers

A:

“Compare totals after changes to report data source” concerns the alternative task “reuse a suitable query data source or aggregate dataset design for report data”, but the stated failure is that a team expects a query object to support arbitrary data modification by the consumer. The required measure is to review query consumers for unintended write expectations.

B:

The proposed “Test matched and unmatched dataitem cases” tests a different control: select a supported outer-join or alternative query design that preserves missing related records. The reported condition is that a team expects a query object to support arbitrary data modification by the consumer; the more direct action is to review query consumers for unintended write expectations.

C:

“Test one-to-many and missing-child relationships” supports the separate task “define the DataItemLink and join type that match the intended relationship”, not the reported problem: a team expects a query object to support arbitrary data modification by the consumer. This case instead calls for “Review query consumers for unintended write expectations”.

Question 369

At fictional Pinewell Electronics, the Business Central development team is supporting equipment returns and invoicing and reviewing solution architecture design during a localization review (MB820-1.2-015). The observed development issue is that an extension package references a library app but omits the required dependency from app.json. Which AL development or design response most directly addresses this issue?

  1. Use documented extension points and define integration precedence, supported events and compatibility tests.
  2. Version public interfaces compatibly and review downstream dependency contracts before a breaking change.
  3. Implement published tables, page extensions and event subscribers rather than distributing a modified base application.
  4. Declare the exact dependency identifier and compatible version constraints in the manifest.

Explanation

Correct Answer

D:

The most direct corrective response is to declare the exact dependency identifier and compatible version constraints in the manifest. This addresses the specific failure where an extension package references a library app but omits the required dependency from app.json. Acceptance evidence is that compilation and installation resolve the prerequisite app before loading dependent objects.

Incorrect Answers

A:

The proposed “Use documented extension points and define integration precedence, supported events and compatibility tests” tests a different control: use documented extension points and define integration precedence, supported events and compatibility tests. The reported condition is that an extension package references a library app but omits the required dependency from app.json; the more direct action is to declare the exact dependency identifier and compatible version constraints in the manifest.

B:

“Version public interfaces compatibly and review downstream dependency contracts before a breaking change” supports the separate task “version public interfaces compatibly and review downstream dependency contracts before a breaking change”, not the reported problem: an extension package references a library app but omits the required dependency from app.json. This case instead calls for “declare the exact dependency identifier and compatible version constraints in the manifest”.

C:

“Implement published tables, page extensions and event subscribers rather than distributing a modified base application” concerns the separate step “implement published tables, page extensions and event subscribers rather than distributing a modified base application”. The reported issue is that an extension package references a library app but omits the required dependency from app.json, so the direct response is to declare the exact dependency identifier and compatible version constraints in the manifest.

Question 370

At fictional Pinewell Electronics, the Business Central development team is supporting equipment returns and invoicing and reviewing solution architecture design during a localization review (MB820-1.2-015). The observed development issue is that an extension package references a library app but omits the required dependency from app.json. Which recurring engineering check would best prevent this issue from returning?

  1. Check AppSource compatibility and extension analyzer results before submission.
  2. Compare exported API surfaces at every version promotion.
  3. Audit app.json dependency lists during release packaging.
  4. Run translation coverage review before each AppSource release.

Explanation

Correct Answer

C:

The ongoing check is to audit app.json dependency lists during release packaging. This helps detect recurrence when an extension package references a library app but omits the required dependency from app.json. The associated correction is to declare the exact dependency identifier and compatible version constraints in the manifest; a confirming result is that compilation and installation resolve the prerequisite app before loading dependent objects.

Incorrect Answers

A:

“Check AppSource compatibility and extension analyzer results before submission” supports the separate task “implement published tables, page extensions and event subscribers rather than distributing a modified base application”, not the reported problem: an extension package references a library app but omits the required dependency from app.json. This case instead calls for “Audit app.json dependency lists during release packaging”.

B:

“Compare exported API surfaces at every version promotion” concerns the separate step “version public interfaces compatibly and review downstream dependency contracts before a breaking change”. The reported issue is that an extension package references a library app but omits the required dependency from app.json, so the direct response is to audit app.json dependency lists during release packaging.

D:

The proposed “Run translation coverage review before each AppSource release” tests a different control: add language translation files and validate translatable properties for the supported locales. The reported condition is that an extension package references a library app but omits the required dependency from app.json; the more direct action is to audit app.json dependency lists during release packaging.