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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 33

Question 320

At fictional Northbridge Transport, the Business Central development team is supporting route billing and inventory and reviewing AL business logic and user experience during a localization review (MB820-4.1-134). The observed development issue is that a new record list has useful saved views but users cannot tell which view is active when switching filters. Which observed result would most clearly show the intended correction works?

  1. The selected client language shows both translated UI labels and setup guidance.
  2. The chosen view's filter state is recognizable and yields the expected records.
  3. A new tenant can configure prerequisites in a supported sequence.
  4. The role can identify incomplete setup work and reach each step.

Explanation

Correct Answer

B:

This is the outcome that directly verifies the intended correction: the chosen view's filter state is recognizable and yields the expected records. The related solution is to name and configure supported views clearly and test switching behavior; it is based on the principle that uI views should make data selection predictable.

Incorrect Answers

A:

“The selected client language shows both translated UI labels and setup guidance” concerns the alternative task “include user-assistance strings in the language resource review and translation workflow”, but the stated failure is that a new record list has useful saved views but users cannot tell which view is active when switching filters. The required measure is to the chosen view's filter state is recognizable and yields the expected records.

C:

“A new tenant can configure prerequisites in a supported sequence” supports the separate task “use an assisted setup flow with ordered steps, validation and completion state”, not the reported problem: a new record list has useful saved views but users cannot tell which view is active when switching filters. This case instead calls for “The chosen view's filter state is recognizable and yields the expected records”.

D:

“The role can identify incomplete setup work and reach each step” concerns the separate step “create an onboarding checklist with required tasks and suitable launch destinations”. The reported issue is that a new record list has useful saved views but users cannot tell which view is active when switching filters, so the direct response is to the chosen view's filter state is recognizable and yields the expected records.

Question 321

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing solution architecture design during an integration contract review (MB820-1.2-022). The observed development issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow. Which AL development or design response most directly addresses this issue?

  1. Run the appropriate AppSourceCop and code analysis gates against the target runtime.
  2. Version public interfaces compatibly and review downstream dependency contracts before a breaking change.
  3. Declare the exact dependency identifier and compatible version constraints in the manifest.
  4. Use documented extension points and define integration precedence, supported events and compatibility tests.

Explanation

Correct Answer

D:

The most direct corrective response is to use documented extension points and define integration precedence, supported events and compatibility tests. This addresses the specific failure where a tenant installs two overlapping extensions with incompatible modifications of the same business flow. Acceptance evidence is that shared workflows run with both apps installed and no conflicting state transitions.

Incorrect Answers

A:

The proposed “Run the appropriate AppSourceCop and code analysis gates against the target runtime” tests a different control: run the appropriate AppSourceCop and code analysis gates against the target runtime. The reported condition is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow; the more direct action is to use documented extension points and define integration precedence, supported events and compatibility tests.

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: a tenant installs two overlapping extensions with incompatible modifications of the same business flow. This case instead calls for “use documented extension points and define integration precedence, supported events and compatibility tests”.

C:

“Declare the exact dependency identifier and compatible version constraints in the manifest” concerns the separate step “declare the exact dependency identifier and compatible version constraints in the manifest”. The reported issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow, so the direct response is to use documented extension points and define integration precedence, supported events and compatibility tests.

Question 322

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing solution architecture design during an integration contract review (MB820-1.2-022). The observed development issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow. Which observed result would most clearly show the intended correction works?

  1. The helper can be reused across unrelated business extensions with an explicit dependency.
  2. A compatibility test shows old consumers still work or fail with a documented upgrade path.
  3. Shared workflows run with both apps installed and no conflicting state transitions.
  4. The extension passes compatibility tests while the base application remains independently updatable.

Explanation

Correct Answer

C:

This is the outcome that directly verifies the intended correction: shared workflows run with both apps installed and no conflicting state transitions. The related solution is to use documented extension points and define integration precedence, supported events and compatibility tests; it is based on the principle that independent extensions still need explicit interoperability testing.

Incorrect Answers

A:

“The helper can be reused across unrelated business extensions with an explicit dependency” supports the separate task “use an appropriate System Application API or a distinct reusable extension module”, not the reported problem: a tenant installs two overlapping extensions with incompatible modifications of the same business flow. This case instead calls for “Shared workflows run with both apps installed and no conflicting state transitions”.

B:

“A compatibility test shows old consumers still work or fail with a documented upgrade path” concerns the separate step “version public interfaces compatibly and review downstream dependency contracts before a breaking change”. The reported issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow, so the direct response is to shared workflows run with both apps installed and no conflicting state transitions.

D:

The proposed “The extension passes compatibility tests while the base application remains independently updatable” tests a different control: implement published tables, page extensions and event subscribers rather than distributing a modified base application. The reported condition is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow; the more direct action is to shared workflows run with both apps installed and no conflicting state transitions.

Question 323

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing solution architecture design during an integration contract review (MB820-1.2-022). The observed development issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow. Which Business Central or AL development principle best explains the right response?

  1. Marketplace apps are packaged extensions rather than private forks of Microsoft source.
  2. Independent extensions still need explicit interoperability testing.
  3. Business Central extension dependencies are explicit contracts.
  4. Compiler success alone is not marketplace certification.

Explanation

Correct Answer

B:

The governing principle is that independent extensions still need explicit interoperability testing. The engineering response is to use documented extension points and define integration precedence, supported events and compatibility tests. Verification should show that shared workflows run with both apps installed and no conflicting state transitions.

Incorrect Answers

A:

“Marketplace apps are packaged extensions rather than private forks of Microsoft source” concerns the separate step “implement published tables, page extensions and event subscribers rather than distributing a modified base application”. The reported issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow, so the direct response is to use documented extension points and define integration precedence, supported events and compatibility tests.

C:

The proposed “Business Central extension dependencies are explicit contracts” tests a different control: declare the exact dependency identifier and compatible version constraints in the manifest. The reported condition is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow; the more direct action is to use documented extension points and define integration precedence, supported events and compatibility tests.

D:

“Compiler success alone is not marketplace certification” supports the separate task “run the appropriate AppSourceCop and code analysis gates against the target runtime”, not the reported problem: a tenant installs two overlapping extensions with incompatible modifications of the same business flow. This case instead calls for “use documented extension points and define integration precedence, supported events and compatibility tests”.

Question 324

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing solution architecture design during an integration contract review (MB820-1.2-022). The observed development issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow. Which recurring engineering check would best prevent this issue from returning?

  1. Run marketplace-specific checks in CI before submitting a release.
  2. Audit app.json dependency lists during release packaging.
  3. Maintain a matrix of common extension combinations.
  4. Check ID conflicts against declared installed dependencies.

Explanation

Correct Answer

C:

The ongoing check is to maintain a matrix of common extension combinations. This helps detect recurrence when a tenant installs two overlapping extensions with incompatible modifications of the same business flow. The associated correction is to use documented extension points and define integration precedence, supported events and compatibility tests; a confirming result is that shared workflows run with both apps installed and no conflicting state transitions.

Incorrect Answers

A:

“Run marketplace-specific checks in CI before submitting a release” concerns the alternative task “run the appropriate AppSourceCop and code analysis gates against the target runtime”, but the stated failure is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow. The required measure is to maintain a matrix of common extension combinations.

B:

The proposed “Audit app.json dependency lists during release packaging” tests a different control: declare the exact dependency identifier and compatible version constraints in the manifest. The reported condition is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow; the more direct action is to maintain a matrix of common extension combinations.

D:

“Check ID conflicts against declared installed dependencies” concerns the separate step “allocate supported object ID ranges and check unique app identity and object conflicts”. The reported issue is that a tenant installs two overlapping extensions with incompatible modifications of the same business flow, so the direct response is to maintain a matrix of common extension combinations.

Question 325

At fictional Keystone Apparel, the Business Central development team is supporting product catalog and fulfillment and reviewing object model and application extensibility during a sandbox design review (MB820-3.3-087). The observed development issue is that an integration imports customer records but drops invalid rows silently without review. Which Business Central or AL development principle best explains the right response?

  1. External file schemas are versioned integration interfaces.
  2. File import is a data-validation boundary.
  3. Data interchange formats should not depend on implicit user culture.
  4. XMLport node structures model serialized data trees.

Explanation

Correct Answer

B:

The governing principle is that file import is a data-validation boundary. The engineering response is to add validation and explicit error handling at the XMLport import boundary. Verification should show that malformed records are rejected with traceable diagnostics and no partial incorrect state.

Incorrect Answers

A:

The proposed “External file schemas are versioned integration interfaces” tests a different control: version and validate the XMLport node contract before deployment. The reported condition is that an integration imports customer records but drops invalid rows silently without review; the more direct action is to add validation and explicit error handling at the XMLport import boundary.

C:

“Data interchange formats should not depend on implicit user culture” concerns the separate step “normalize supported date parsing with an explicit agreed format and reject ambiguous values”. The reported issue is that an integration imports customer records but drops invalid rows silently without review, so the direct response is to add validation and explicit error handling at the XMLport import boundary.

D:

“XMLport node structures model serialized data trees” concerns the alternative task “define an XMLport schema with the intended parent/child nodes and matching element names”, but the stated failure is that an integration imports customer records but drops invalid rows silently without review. The required measure is to add validation and explicit error handling at the XMLport import boundary.

Question 326

At fictional Keystone Apparel, the Business Central development team is supporting product catalog and fulfillment and reviewing object model and application extensibility during a sandbox design review (MB820-3.3-087). The observed development issue is that an integration imports customer records but drops invalid rows silently without review. Which recurring engineering check would best prevent this issue from returning?

  1. Use locale-variant input fixtures in regression tests.
  2. Validate exported XML against agreed sample schemas.
  3. Maintain mapping fixtures for changed partner specifications.
  4. Run negative-file tests before scheduled partner uploads.

Explanation

Correct Answer

D:

The ongoing check is to run negative-file tests before scheduled partner uploads. This helps detect recurrence when an integration imports customer records but drops invalid rows silently without review. The associated correction is to add validation and explicit error handling at the XMLport import boundary; a confirming result is that malformed records are rejected with traceable diagnostics and no partial incorrect state.

Incorrect Answers

A:

“Use locale-variant input fixtures in regression tests” supports the separate task “normalize supported date parsing with an explicit agreed format and reject ambiguous values”, not the reported problem: an integration imports customer records but drops invalid rows silently without review. This case instead calls for “Run negative-file tests before scheduled partner uploads”.

B:

“Validate exported XML against agreed sample schemas” concerns the separate step “define an XMLport schema with the intended parent/child nodes and matching element names”. The reported issue is that an integration imports customer records but drops invalid rows silently without review, so the direct response is to run negative-file tests before scheduled partner uploads.

C:

“Maintain mapping fixtures for changed partner specifications” concerns the alternative task “review field mapping and conversion logic against the partner schema”, but the stated failure is that an integration imports customer records but drops invalid rows silently without review. The required measure is to run negative-file tests before scheduled partner uploads.

Question 327

At fictional Keystone Apparel, the Business Central development team is supporting product catalog and fulfillment and reviewing object model and application extensibility during a sandbox design review (MB820-3.3-087). The observed development issue is that an integration imports customer records but drops invalid rows silently without review. Which AL development or design response most directly addresses this issue?

  1. Add validation and explicit error handling at the XMLport import boundary.
  2. Review field mapping and conversion logic against the partner schema.
  3. Design an appropriate transactional import/error strategy and reconcile accepted versus rejected records.
  4. Version and validate the XMLport node contract before deployment.

Explanation

Correct Answer

A:

The most direct corrective response is to add validation and explicit error handling at the XMLport import boundary. This addresses the specific failure where an integration imports customer records but drops invalid rows silently without review. Acceptance evidence is that malformed records are rejected with traceable diagnostics and no partial incorrect state.

Incorrect Answers

B:

“Review field mapping and conversion logic against the partner schema” concerns the alternative task “review field mapping and conversion logic against the partner schema”, but the stated failure is that an integration imports customer records but drops invalid rows silently without review. The required measure is to add validation and explicit error handling at the XMLport import boundary.

C:

The proposed “Design an appropriate transactional import/error strategy and reconcile accepted versus rejected records” tests a different control: design an appropriate transactional import/error strategy and reconcile accepted versus rejected records. The reported condition is that an integration imports customer records but drops invalid rows silently without review; the more direct action is to add validation and explicit error handling at the XMLport import boundary.

D:

“Version and validate the XMLport node contract before deployment” supports the separate task “version and validate the XMLport node contract before deployment”, not the reported problem: an integration imports customer records but drops invalid rows silently without review. This case instead calls for “add validation and explicit error handling at the XMLport import boundary”.

Question 328

At fictional Keystone Apparel, the Business Central development team is supporting product catalog and fulfillment and reviewing object model and application extensibility during a sandbox design review (MB820-3.3-087). The observed development issue is that an integration imports customer records but drops invalid rows silently without review. Which observed result would most clearly show the intended correction works?

  1. Each exported header includes its correct set of line records.
  2. Imported rows map to correct columns without shifted data.
  3. Malformed records are rejected with traceable diagnostics and no partial incorrect state.
  4. The exported file contains only authorized, contractually required fields.

Explanation

Correct Answer

C:

This is the outcome that directly verifies the intended correction: malformed records are rejected with traceable diagnostics and no partial incorrect state. The related solution is to add validation and explicit error handling at the XMLport import boundary; it is based on the principle that file import is a data-validation boundary.

Incorrect Answers

A:

“Each exported header includes its correct set of line records” concerns the alternative task “model the related table elements and record linkage within the XMLport”, but the stated failure is that an integration imports customer records but drops invalid rows silently without review. The required measure is to malformed records are rejected with traceable diagnostics and no partial incorrect state.

B:

The proposed “Imported rows map to correct columns without shifted data” tests a different control: configure the XMLport format and field separators to match the documented external contract. The reported condition is that an integration imports customer records but drops invalid rows silently without review; the more direct action is to malformed records are rejected with traceable diagnostics and no partial incorrect state.

D:

“The exported file contains only authorized, contractually required fields” concerns the separate step “remove unneeded nodes and enforce permissions before streaming records”. The reported issue is that an integration imports customer records but drops invalid rows silently without review, so the direct response is to malformed records are rejected with traceable diagnostics and no partial incorrect state.

Question 329

At fictional Harborline Health Supply, the Business Central development team is supporting medical supply purchasing and reviewing object model and application extensibility during a tenant acceptance test (MB820-3.1-060). The observed development issue is that a team tries to add a new invoice state by changing a standard option field with closed choices. Which recurring engineering check would best prevent this issue from returning?

  1. Test new field defaults and historical record handling during upgrades.
  2. Review enum extension compatibility before publishing.
  3. Scan custom table fields for missing or incorrect classification.
  4. Review allowed values when business taxonomy changes.

Explanation

Correct Answer

B:

The ongoing check is to review enum extension compatibility before publishing. This helps detect recurrence when a team tries to add a new invoice state by changing a standard option field with closed choices. The associated correction is to use a supported extensible enum or enumextension where the target model allows extension; a confirming result is that the new enum value is recognized without modifying the base object's existing members.

Incorrect Answers

A:

The proposed “Test new field defaults and historical record handling during upgrades” tests a different control: use a compatible field design and controlled initialization that respects existing rows. The reported condition is that a team tries to add a new invoice state by changing a standard option field with closed choices; the more direct action is to review enum extension compatibility before publishing.

C:

“Scan custom table fields for missing or incorrect classification” concerns the separate step “set appropriate DataClassification properties on table fields and review their privacy meaning”. The reported issue is that a team tries to add a new invoice state by changing a standard option field with closed choices, so the direct response is to review enum extension compatibility before publishing.

D:

“Review allowed values when business taxonomy changes” concerns the alternative task “model categories with a supported enum or related lookup table appropriate to extensibility requirements”, but the stated failure is that a team tries to add a new invoice state by changing a standard option field with closed choices. The required measure is to review enum extension compatibility before publishing.

Question 330

At fictional Harborline Health Supply, the Business Central development team is supporting medical supply purchasing and reviewing object model and application extensibility during a tenant acceptance test (MB820-3.1-060). The observed development issue is that a team tries to add a new invoice state by changing a standard option field with closed choices. Which Business Central or AL development principle best explains the right response?

  1. Extensible enums permit declared values across compatible app boundaries.
  2. Data schema extensions must account for previously stored records.
  3. Page extensions enhance specific UI surfaces and must consider visibility controls.
  4. Calculated fields derive values from data rather than storing independent copies.

Explanation

Correct Answer

A:

The governing principle is that extensible enums permit declared values across compatible app boundaries. The engineering response is to use a supported extensible enum or enumextension where the target model allows extension. Verification should show that the new enum value is recognized without modifying the base object's existing members.

Incorrect Answers

B:

“Data schema extensions must account for previously stored records” concerns the separate step “use a compatible field design and controlled initialization that respects existing rows”. The reported issue is that a team tries to add a new invoice state by changing a standard option field with closed choices, so the direct response is to use a supported extensible enum or enumextension where the target model allows extension.

C:

“Page extensions enhance specific UI surfaces and must consider visibility controls” concerns the alternative task “add the field in the appropriate pageextension layout section and verify ApplicationArea and permissions”, but the stated failure is that a team tries to add a new invoice state by changing a standard option field with closed choices. The required measure is to use a supported extensible enum or enumextension where the target model allows extension.

D:

The proposed “Calculated fields derive values from data rather than storing independent copies” tests a different control: define an appropriate FlowField with a CalcFormula and use CalcFields where required. The reported condition is that a team tries to add a new invoice state by changing a standard option field with closed choices; the more direct action is to use a supported extensible enum or enumextension where the target model allows extension.