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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 73

Question 720

At fictional Fairview Commerce, the Business Central development team is supporting online sales processing and reviewing extension environment and deployment preparation during a production readiness review (MB820-2.2-041). The observed development issue is that a new extension requires creating setup records only at first installation. Which observed result would most clearly show the intended correction works?

  1. The production package hash matches the artifact that passed tests.
  2. The extension's installed version reflects the new artifact and data remains consistent.
  3. Initial deployment creates required setup once without duplicating it on repeated operations.
  4. The app remains installed or is removed only by an explicit supported lifecycle action.

Explanation

Correct Answer

C:

This is the outcome that directly verifies the intended correction: initial deployment creates required setup once without duplicating it on repeated operations. The related solution is to use an installation codeunit with appropriate company initialization and idempotent setup; it is based on the principle that installation lifecycle hooks differ from ordinary page execution and upgrades.

Incorrect Answers

A:

“The production package hash matches the artifact that passed tests” concerns the alternative task “promote a versioned extension artifact through sandbox acceptance before production deployment”, but the stated failure is that a new extension requires creating setup records only at first installation. The required measure is to initial deployment creates required setup once without duplicating it on repeated operations.

B:

The proposed “The extension's installed version reflects the new artifact and data remains consistent” tests a different control: increment the extension version and follow the supported package publish/upgrade path. The reported condition is that a new extension requires creating setup records only at first installation; the more direct action is to initial deployment creates required setup once without duplicating it on repeated operations.

D:

“The app remains installed or is removed only by an explicit supported lifecycle action” concerns the separate step “separate debugger lifecycle from extension publish, install and uninstall procedures”. The reported issue is that a new extension requires creating setup records only at first installation, so the direct response is to initial deployment creates required setup once without duplicating it on repeated operations.

Question 721

At fictional Valley Media, the Business Central development team is supporting advertising orders and invoices and reviewing external-service integration during a sandbox design review (MB820-6.1-190). The observed development issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. Which Business Central or AL development principle best explains the right response?

  1. Rate limiting and idempotent retries are integration reliability concerns.
  2. Credentials must be managed independently of application source.
  3. External service latency must not create unbounded transactional dependency.
  4. Service integration should use published APIs across trust boundaries.

Explanation

Correct Answer

B:

The governing principle is that credentials must be managed independently of application source. The engineering response is to use supported secret storage or secure authorization flow rather than embedding the token in source. Verification should show that the integration authenticates while the package and logs contain no secret.

Incorrect Answers

A:

The proposed “Rate limiting and idempotent retries are integration reliability concerns” tests a different control: implement bounded retries honoring appropriate rate-limit signals and business operation idempotency. The reported condition is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants; the more direct action is to use supported secret storage or secure authorization flow rather than embedding the token in source.

C:

“External service latency must not create unbounded transactional dependency” concerns the separate step “set an appropriate request timeout and implement a bounded failure path or asynchronous design where needed”. The reported issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants, so the direct response is to use supported secret storage or secure authorization flow rather than embedding the token in source.

D:

“Service integration should use published APIs across trust boundaries” concerns the alternative task “use AL HttpClient/HttpRequestMessage to invoke the authorized REST endpoint and parse its response”, but the stated failure is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. The required measure is to use supported secret storage or secure authorization flow rather than embedding the token in source.

Question 722

At fictional Valley Media, the Business Central development team is supporting advertising orders and invoices and reviewing external-service integration during a sandbox design review (MB820-6.1-190). The observed development issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. Which observed result would most clearly show the intended correction works?

  1. A simulated timeout returns control without committing an unsupported external result.
  2. The integration authenticates while the package and logs contain no secret.
  3. The quote is retrieved through the service contract without direct database access.
  4. Special characters do not change the endpoint or insert unexpected parameters.

Explanation

Correct Answer

B:

This is the outcome that directly verifies the intended correction: the integration authenticates while the package and logs contain no secret. The related solution is to use supported secret storage or secure authorization flow rather than embedding the token in source; it is based on the principle that credentials must be managed independently of application source.

Incorrect Answers

A:

“A simulated timeout returns control without committing an unsupported external result” supports the separate task “set an appropriate request timeout and implement a bounded failure path or asynchronous design where needed”, not the reported problem: a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. This case instead calls for “The integration authenticates while the package and logs contain no secret”.

C:

“The quote is retrieved through the service contract without direct database access” concerns the alternative task “use AL HttpClient/HttpRequestMessage to invoke the authorized REST endpoint and parse its response”, but the stated failure is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. The required measure is to the integration authenticates while the package and logs contain no secret.

D:

The proposed “Special characters do not change the endpoint or insert unexpected parameters” tests a different control: validate input and use appropriate URI encoding for outbound requests. The reported condition is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants; the more direct action is to the integration authenticates while the package and logs contain no secret.

Question 723

At fictional Valley Media, the Business Central development team is supporting advertising orders and invoices and reviewing external-service integration during a sandbox design review (MB820-6.1-190). The observed development issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. Which recurring engineering check would best prevent this issue from returning?

  1. Test timeouts and authorization failures for external calls.
  2. Track retry amplification per endpoint.
  3. Test URL encoding and parameter injection cases.
  4. Scan extension packages and telemetry for credential material.

Explanation

Correct Answer

D:

The ongoing check is to scan extension packages and telemetry for credential material. This helps detect recurrence when a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. The associated correction is to use supported secret storage or secure authorization flow rather than embedding the token in source; a confirming result is that the integration authenticates while the package and logs contain no secret.

Incorrect Answers

A:

“Test timeouts and authorization failures for external calls” concerns the separate step “use AL HttpClient/HttpRequestMessage to invoke the authorized REST endpoint and parse its response”. The reported issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants, so the direct response is to scan extension packages and telemetry for credential material.

B:

“Track retry amplification per endpoint” concerns the alternative task “implement bounded retries honoring appropriate rate-limit signals and business operation idempotency”, but the stated failure is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. The required measure is to scan extension packages and telemetry for credential material.

C:

The proposed “Test URL encoding and parameter injection cases” tests a different control: validate input and use appropriate URI encoding for outbound requests. The reported condition is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants; the more direct action is to scan extension packages and telemetry for credential material.

Question 724

At fictional Valley Media, the Business Central development team is supporting advertising orders and invoices and reviewing external-service integration during a sandbox design review (MB820-6.1-190). The observed development issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. Which AL development or design response most directly addresses this issue?

  1. Build a JsonObject/JsonToken payload and set the appropriate content headers.
  2. Use supported secret storage or secure authorization flow rather than embedding the token in source.
  3. Implement bounded retries honoring appropriate rate-limit signals and business operation idempotency.
  4. Use AL HttpClient/HttpRequestMessage to invoke the authorized REST endpoint and parse its response.

Explanation

Correct Answer

B:

The most direct corrective response is to use supported secret storage or secure authorization flow rather than embedding the token in source. This addresses the specific failure where a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. Acceptance evidence is that the integration authenticates while the package and logs contain no secret.

Incorrect Answers

A:

“Build a JsonObject/JsonToken payload and set the appropriate content headers” concerns the alternative task “build a JsonObject/JsonToken payload and set the appropriate content headers”, but the stated failure is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. The required measure is to use supported secret storage or secure authorization flow rather than embedding the token in source.

C:

“Implement bounded retries honoring appropriate rate-limit signals and business operation idempotency” supports the separate task “implement bounded retries honoring appropriate rate-limit signals and business operation idempotency”, not the reported problem: a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants. This case instead calls for “use supported secret storage or secure authorization flow rather than embedding the token in source”.

D:

“Use AL HttpClient/HttpRequestMessage to invoke the authorized REST endpoint and parse its response” concerns the separate step “use AL HttpClient/HttpRequestMessage to invoke the authorized REST endpoint and parse its response”. The reported issue is that a developer hardcodes an external bearer token into an AL codeunit deployed to several tenants, so the direct response is to use supported secret storage or secure authorization flow rather than embedding the token in source.

Question 725

At fictional Riverside Consulting, the Business Central development team is supporting professional project billing and reviewing extension environment and deployment preparation during a release qualification test (MB820-2.1-034). The observed development issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. Which AL development or design response most directly addresses this issue?

  1. Create and target a dedicated sandbox environment with nonproduction data and restricted permissions.
  2. Configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.
  3. Download current symbols and declare the required app dependency with compatible versions.
  4. Refresh downloaded symbols and resolve dependency versions against the new application target.

Explanation

Correct Answer

B:

The most direct corrective response is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies. This addresses the specific failure where a project maintains several independent AL apps but the team copies app.json into one folder for every build. Acceptance evidence is that each app builds independently with its own version and valid dependency graph.

Incorrect Answers

A:

The proposed “Create and target a dedicated sandbox environment with nonproduction data and restricted permissions” tests a different control: create and target a dedicated sandbox environment with nonproduction data and restricted permissions. The reported condition is that a project maintains several independent AL apps but the team copies app.json into one folder for every build; the more direct action is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.

C:

“Download current symbols and declare the required app dependency with compatible versions” concerns the separate step “download current symbols and declare the required app dependency with compatible versions”. The reported issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build, so the direct response is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.

D:

“Refresh downloaded symbols and resolve dependency versions against the new application target” concerns the alternative task “refresh downloaded symbols and resolve dependency versions against the new application target”, but the stated failure is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. The required measure is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.

Question 726

At fictional Riverside Consulting, the Business Central development team is supporting professional project billing and reviewing extension environment and deployment preparation during a release qualification test (MB820-2.1-034). The observed development issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. Which observed result would most clearly show the intended correction works?

  1. AL symbol download and debugging connect to the approved sandbox rather than production.
  2. Package versioning and debug connection behave independently under correct files.
  3. Each app builds independently with its own version and valid dependency graph.
  4. The extension compiles and deploys against the actual target version.

Explanation

Correct Answer

C:

This is the outcome that directly verifies the intended correction: each app builds independently with its own version and valid dependency graph. The related solution is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies; it is based on the principle that a multi-app workspace does not imply one combined app identity.

Incorrect Answers

A:

“AL symbol download and debugging connect to the approved sandbox rather than production” supports the separate task “correct the server, environment name, tenant and authentication settings for the intended Business Central sandbox”, not the reported problem: a project maintains several independent AL apps but the team copies app.json into one folder for every build. This case instead calls for “Each app builds independently with its own version and valid dependency graph”.

B:

“Package versioning and debug connection behave independently under correct files” concerns the separate step “separate app package identity/version metadata in app.json from run and attach configuration in launch.json”. The reported issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build, so the direct response is to each app builds independently with its own version and valid dependency graph.

D:

The proposed “The extension compiles and deploys against the actual target version” tests a different control: align the runtime and platform/application version fields with the supported target environment. The reported condition is that a project maintains several independent AL apps but the team copies app.json into one folder for every build; the more direct action is to each app builds independently with its own version and valid dependency graph.

Question 727

At fictional Riverside Consulting, the Business Central development team is supporting professional project billing and reviewing extension environment and deployment preparation during a release qualification test (MB820-2.1-034). The observed development issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. Which recurring engineering check would best prevent this issue from returning?

  1. Validate separate app versioning and compilation in CI.
  2. Lint project configuration for misplaced connection properties.
  3. Block production endpoints in development launch profiles.
  4. Check supported VS Code and AL extension versions during onboarding.

Explanation

Correct Answer

A:

The ongoing check is to validate separate app versioning and compilation in CI. This helps detect recurrence when a project maintains several independent AL apps but the team copies app.json into one folder for every build. The associated correction is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies; a confirming result is that each app builds independently with its own version and valid dependency graph.

Incorrect Answers

B:

“Lint project configuration for misplaced connection properties” concerns the alternative task “separate app package identity/version metadata in app.json from run and attach configuration in launch.json”, but the stated failure is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. The required measure is to validate separate app versioning and compilation in CI.

C:

The proposed “Block production endpoints in development launch profiles” tests a different control: create and target a dedicated sandbox environment with nonproduction data and restricted permissions. The reported condition is that a project maintains several independent AL apps but the team copies app.json into one folder for every build; the more direct action is to validate separate app versioning and compilation in CI.

D:

“Check supported VS Code and AL extension versions during onboarding” supports the separate task “install the current AL Language extension in Visual Studio Code and use its compiler and editor services”, not the reported problem: a project maintains several independent AL apps but the team copies app.json into one folder for every build. This case instead calls for “Validate separate app versioning and compilation in CI”.

Question 728

At fictional Riverside Consulting, the Business Central development team is supporting professional project billing and reviewing extension environment and deployment preparation during a release qualification test (MB820-2.1-034). The observed development issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. Which Business Central or AL development principle best explains the right response?

  1. Environment targeting is an authorization and isolation concern.
  2. Development connection configuration must identify the target environment accurately.
  3. A multi-app workspace does not imply one combined app identity.
  4. Source-controlled manifests must not become credential stores.

Explanation

Correct Answer

C:

The governing principle is that a multi-app workspace does not imply one combined app identity. The engineering response is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies. Verification should show that each app builds independently with its own version and valid dependency graph.

Incorrect Answers

A:

“Environment targeting is an authorization and isolation concern” concerns the alternative task “use separate, minimally scoped development configurations rather than shared cross-customer endpoints”, but the stated failure is that a project maintains several independent AL apps but the team copies app.json into one folder for every build. The required measure is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.

B:

The proposed “Development connection configuration must identify the target environment accurately” tests a different control: correct the server, environment name, tenant and authentication settings for the intended Business Central sandbox. The reported condition is that a project maintains several independent AL apps but the team copies app.json into one folder for every build; the more direct action is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.

D:

“Source-controlled manifests must not become credential stores” concerns the separate step “keep application metadata separate from secret-bearing connection profiles and use supported secure sign-in”. The reported issue is that a project maintains several independent AL apps but the team copies app.json into one folder for every build, so the direct response is to configure an appropriate multi-root workspace and preserve distinct app manifests and dependencies.

Question 729

At fictional Willow Foods, the Business Central development team is supporting warehouse quality control and reviewing AL business logic and user experience during a source-control pull request (MB820-4.2-144). The observed development issue is that a warehouse team requests a numeric free-text status to model a process with named approval states. Which Business Central or AL development principle best explains the right response?

  1. Numbering conventions are part of record integrity and auditability.
  2. Business state should be represented with meaningful constrained values.
  3. Document lifecycle states should distinguish tentative work from committed postings.
  4. Business Central document standards separate headers from repeating line details.

Explanation

Correct Answer

B:

The governing principle is that business state should be represented with meaningful constrained values. The engineering response is to use an appropriate enum/state model with controlled business transitions. Verification should show that records move only through permitted states and remain intelligible to users. Applied here, the relevant facts are: request (MB820-4.2-144). The observed development issue is that a warehouse team requests a numeric free-text status to model a process with named approval states. The question asks which Business Central or AL development principle best explains the right response.

Incorrect Answers

A:

The proposed “Numbering conventions are part of record integrity and auditability” tests a different control: use supported numbering and posting design patterns for document identifiers. The reported condition is that a warehouse team requests a numeric free-text status to model a process with named approval states; the more direct action is to use an appropriate enum/state model with controlled business transitions.

C:

“Document lifecycle states should distinguish tentative work from committed postings” concerns the separate step “keep unposted documents and posted accounting entries separate in the lifecycle”. The reported issue is that a warehouse team requests a numeric free-text status to model a process with named approval states, so the direct response is to use an appropriate enum/state model with controlled business transitions.

D:

“Business Central document standards separate headers from repeating line details” concerns the alternative task “use document header and line table patterns with proper linked records”, but the stated failure is that a warehouse team requests a numeric free-text status to model a process with named approval states. The required measure is to use an appropriate enum/state model with controlled business transitions.

Question 730

At fictional Willow Foods, the Business Central development team is supporting warehouse quality control and reviewing AL business logic and user experience during a source-control pull request (MB820-4.2-144). The observed development issue is that a warehouse team requests a numeric free-text status to model a process with named approval states. Which recurring engineering check would best prevent this issue from returning?

  1. Validate state transition tests after adding status values.
  2. Review table selection for new durable customer attributes.
  3. Monitor duplicate creation during bulk imports.
  4. Inspect posting transitions for premature financial mutations.

Explanation

Correct Answer

A:

The ongoing check is to validate state transition tests after adding status values. This helps detect recurrence when a warehouse team requests a numeric free-text status to model a process with named approval states. The associated correction is to use an appropriate enum/state model with controlled business transitions; a confirming result is that records move only through permitted states and remain intelligible to users. Applied here, the relevant facts are: request (MB820-4.2-144). The observed development issue is that a warehouse team requests a numeric free-text status to model a process with named approval states. The question asks which recurring engineering check would best prevent this issue from returning.

Incorrect Answers

B:

“Review table selection for new durable customer attributes” concerns the separate step “store stable customer attributes in an appropriate master-data table or extension field”. The reported issue is that a warehouse team requests a numeric free-text status to model a process with named approval states, so the direct response is to validate state transition tests after adding status values.

C:

“Monitor duplicate creation during bulk imports” concerns the alternative task “use stable vendor identifiers and defined match/merge rules for master data”, but the stated failure is that a warehouse team requests a numeric free-text status to model a process with named approval states. The required measure is to validate state transition tests after adding status values.

D:

The proposed “Inspect posting transitions for premature financial mutations” tests a different control: keep unposted documents and posted accounting entries separate in the lifecycle. The reported condition is that a warehouse team requests a numeric free-text status to model a process with named approval states; the more direct action is to validate state transition tests after adding status values.