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Microsoft MB-820 Premium Bundle

MB-820 Premium File: 131 Questions & Answers

Last Update: Oct 12, 2026

MB-820 PDF Study Guide: 948 Pages

$74.99

MB-820 Bundle gives you unlimited access to "MB-820" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

Microsoft MB-820 Practice Test 6

Question 50

A project team claims a low-level file and authentication utility belongs in the Base Application business processes. The developer recommends the following change: Distinguish the System Application shared framework from the Base Application business functionality. Which technical explanation most directly justifies it in this case?

  1. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability
  2. System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior
  3. Publishing a local app package does not fulfill the marketplace's validation, policy, listing, and lifecycle requirements
  4. Extension upgrades must preserve and transform existing data rather than assuming a fresh installation on each new version

Explanation

Correct Answer

B:

System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior. It connects the proposed action to the exact failure or requirement—A project team claims a low-level file and authentication utility belongs in the Base Application business processes. Confirmation would be dependency review locates the framework functionality in the system library and business workflows in the base app.

Incorrect Answers

A:

That mechanism explains why the alternative action—declare the dependent application in app.json and install compatible prerequisites before publishing—helps in another case. It does not justify the proposed fix here; system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The distinguishing requirement is: A project team claims a low-level file and authentication utility belongs in the Base Application business processes.

C:

That mechanism explains why the alternative action—follow the Microsoft marketplace technical validation and submission process for the packaged app—helps in another case. It does not justify the proposed fix here; system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The distinguishing requirement is: A project team claims a low-level file and authentication utility belongs in the Base Application business processes.

D:

That mechanism explains why the alternative action—plan the app's upgrade and data-migration lifecycle together with its versioned release—helps in another case. It does not justify the proposed fix here; system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The distinguishing requirement is: A project team claims a low-level file and authentication utility belongs in the Base Application business processes.

Question 51

A project team claims a low-level file and authentication utility belongs in the Base Application business processes. The team implemented a change aligned with this plan: Distinguish the System Application shared framework from the Base Application business functionality. Which acceptance result specifically verifies that the reported problem is resolved?

  1. AL symbols resolve and deployment confirms all required compatible dependency apps are installed
  2. The package passes applicable marketplace validation and the listing is accepted through the publisher process
  3. Dependency review locates the framework functionality in the system library and business workflows in the base app
  4. A tenant with representative old data upgrades and the migrated records remain correct and queryable

Explanation

Correct Answer

C:

Dependency review locates the framework functionality in the system library and business workflows in the base app. This is stronger than an unrelated health check because the desired design action is distinguish the system application shared framework from the base application business functionality, and system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The local requirement is: A project team claims a low-level file and authentication utility belongs in the Base Application business processes.

Incorrect Answers

A:

This would verify declare the dependent application in app.json and install compatible prerequisites before publishing, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A project team claims a low-level file and authentication utility belongs in the Base Application business processes. The decisive local proof is dependency review locates the framework functionality in the system library and business workflows in the base app.

B:

This would verify follow the Microsoft marketplace technical validation and submission process for the packaged app, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A project team claims a low-level file and authentication utility belongs in the Base Application business processes. The decisive local proof is dependency review locates the framework functionality in the system library and business workflows in the base app.

D:

This would verify plan the app's upgrade and data-migration lifecycle together with its versioned release, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A project team claims a low-level file and authentication utility belongs in the Base Application business processes. The decisive local proof is dependency review locates the framework functionality in the system library and business workflows in the base app.

Question 52

A project team claims a low-level file and authentication utility belongs in the Base Application business processes. A targeted trial still reproduces the original gap after the team attempted this change: Distinguish the System Application shared framework from the Base Application business functionality. Which repair directly addresses the remaining defect?

  1. Add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first
  2. Address the submission validation failures and release the package through the documented marketplace channel
  3. Implement and test the relevant upgrade logic and data mapping before releasing the new app version
  4. Correct the referenced dependency and move business-specific customization into the appropriate app extension

Explanation

Correct Answer

D:

Correct the referenced dependency and move business-specific customization into the appropriate app extension. This directly addresses the remaining defect for the requirement—A project team claims a low-level file and authentication utility belongs in the Base Application business processes. It restores the mechanism described here: system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

Incorrect Answers

A:

This correction is for the separate condition: An add-on uses a shared tax engine from a partner extension that was never installed in the target tenant. It would not directly restore the intended behavior in this situation: A project team claims a low-level file and authentication utility belongs in the Base Application business processes. Here, correct the referenced dependency and move business-specific customization into the appropriate app extension, because system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

B:

This correction is for the separate condition: A vendor delivers a reusable invoice workflow but treats tenant-local publish as equivalent to completing AppSource validation. It would not directly restore the intended behavior in this situation: A project team claims a low-level file and authentication utility belongs in the Base Application business processes. Here, correct the referenced dependency and move business-specific customization into the appropriate app extension, because system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

C:

This correction is for the separate condition: A loyalty extension changes field semantics while existing customer history must remain usable during upgrade. It would not directly restore the intended behavior in this situation: A project team claims a low-level file and authentication utility belongs in the Base Application business processes. Here, correct the referenced dependency and move business-specific customization into the appropriate app extension, because system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

Question 53

A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Declare the dependent application in app.json and install compatible prerequisites before publishing
  2. Distinguish the System Application shared framework from the Base Application business functionality
  3. Follow the Microsoft marketplace technical validation and submission process for the packaged app
  4. Plan the app's upgrade and data-migration lifecycle together with its versioned release

Explanation

Correct Answer

B:

This targets the concrete requirement—A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior. The team can establish success when dependency review locates the framework functionality in the system library and business workflows in the base app.

Incorrect Answers

A:

This choice primarily fits a different requirement: A publisher's extension requires another vendor app but its manifest does not declare that dependency. There, extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. In the current situation, A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior. Acceptance requires dependency review locates the framework functionality in the system library and business workflows in the base app.

C:

This choice primarily fits a different requirement: A partner is packaging an extension for broad marketplace sale without publishing privacy and functional support details. There, publishing a local app package does not fulfill the marketplace's validation, policy, listing, and lifecycle requirements. In the current situation, A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior. Acceptance requires dependency review locates the framework functionality in the system library and business workflows in the base app.

D:

This choice primarily fits a different requirement: A Business Central app update introduces a new data model but has no migration path for old subscription records. There, extension upgrades must preserve and transform existing data rather than assuming a fresh installation on each new version. In the current situation, A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior. Acceptance requires dependency review locates the framework functionality in the system library and business workflows in the base app.

Question 54

A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. The developer recommends the following change: Distinguish the System Application shared framework from the Base Application business functionality. Which technical explanation most directly justifies it in this case?

  1. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability
  2. Publishing a local app package does not fulfill the marketplace's validation, policy, listing, and lifecycle requirements
  3. System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior
  4. Extension upgrades must preserve and transform existing data rather than assuming a fresh installation on each new version

Explanation

Correct Answer

C:

System Application provides reusable system-level abstractions while Base Application supplies business-domain application behavior. It connects the proposed action to the exact failure or requirement—A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. Confirmation would be dependency review locates the framework functionality in the system library and business workflows in the base app.

Incorrect Answers

A:

That mechanism explains why the alternative action—declare the dependent application in app.json and install compatible prerequisites before publishing—helps in another case. It does not justify the proposed fix here; system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The distinguishing requirement is: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central.

B:

That mechanism explains why the alternative action—follow the Microsoft marketplace technical validation and submission process for the packaged app—helps in another case. It does not justify the proposed fix here; system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The distinguishing requirement is: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central.

D:

That mechanism explains why the alternative action—plan the app's upgrade and data-migration lifecycle together with its versioned release—helps in another case. It does not justify the proposed fix here; system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The distinguishing requirement is: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central.

Question 55

A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. The team implemented a change aligned with this plan: Distinguish the System Application shared framework from the Base Application business functionality. Which acceptance result specifically verifies that the reported problem is resolved?

  1. AL symbols resolve and deployment confirms all required compatible dependency apps are installed
  2. The package passes applicable marketplace validation and the listing is accepted through the publisher process
  3. A tenant with representative old data upgrades and the migrated records remain correct and queryable
  4. Dependency review locates the framework functionality in the system library and business workflows in the base app

Explanation

Correct Answer

D:

Dependency review locates the framework functionality in the system library and business workflows in the base app. This is stronger than an unrelated health check because the desired design action is distinguish the system application shared framework from the base application business functionality, and system application provides reusable system-level abstractions while base application supplies business-domain application behavior. The local requirement is: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central.

Incorrect Answers

A:

This would verify declare the dependent application in app.json and install compatible prerequisites before publishing, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. The decisive local proof is dependency review locates the framework functionality in the system library and business workflows in the base app.

B:

This would verify follow the Microsoft marketplace technical validation and submission process for the packaged app, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. The decisive local proof is dependency review locates the framework functionality in the system library and business workflows in the base app.

C:

This would verify plan the app's upgrade and data-migration lifecycle together with its versioned release, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. The decisive local proof is dependency review locates the framework functionality in the system library and business workflows in the base app.

Question 56

A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. A targeted trial still reproduces the original gap after the team attempted this change: Distinguish the System Application shared framework from the Base Application business functionality. Which repair directly addresses the remaining defect?

  1. Correct the referenced dependency and move business-specific customization into the appropriate app extension
  2. Add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first
  3. Address the submission validation failures and release the package through the documented marketplace channel
  4. Implement and test the relevant upgrade logic and data mapping before releasing the new app version

Explanation

Correct Answer

A:

Correct the referenced dependency and move business-specific customization into the appropriate app extension. This directly addresses the remaining defect for the requirement—A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. It restores the mechanism described here: system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

Incorrect Answers

B:

This correction is for the separate condition: An add-on uses a shared tax engine from a partner extension that was never installed in the target tenant. It would not directly restore the intended behavior in this situation: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. Here, correct the referenced dependency and move business-specific customization into the appropriate app extension, because system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

C:

This correction is for the separate condition: A vendor delivers a reusable invoice workflow but treats tenant-local publish as equivalent to completing AppSource validation. It would not directly restore the intended behavior in this situation: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. Here, correct the referenced dependency and move business-specific customization into the appropriate app extension, because system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

D:

This correction is for the separate condition: A loyalty extension changes field semantics while existing customer history must remain usable during upgrade. It would not directly restore the intended behavior in this situation: A new developer confuses a reusable platform library with sales-order posting behavior in Business Central. Here, correct the referenced dependency and move business-specific customization into the appropriate app extension, because system application provides reusable system-level abstractions while base application supplies business-domain application behavior.

Question 57

A publisher's extension requires another vendor app but its manifest does not declare that dependency. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Follow the Microsoft marketplace technical validation and submission process for the packaged app
  2. Plan the app's upgrade and data-migration lifecycle together with its versioned release
  3. Declare the dependent application in app.json and install compatible prerequisites before publishing
  4. Put the reusable capability in a separate dependency app with a documented interface

Explanation

Correct Answer

C:

This targets the concrete requirement—A publisher's extension requires another vendor app but its manifest does not declare that dependency. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. The team can establish success when al symbols resolve and deployment confirms all required compatible dependency apps are installed.

Incorrect Answers

A:

This choice primarily fits a different requirement: A partner is packaging an extension for broad marketplace sale without publishing privacy and functional support details. There, publishing a local app package does not fulfill the marketplace's validation, policy, listing, and lifecycle requirements. In the current situation, A publisher's extension requires another vendor app but its manifest does not declare that dependency. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. Acceptance requires al symbols resolve and deployment confirms all required compatible dependency apps are installed.

B:

This choice primarily fits a different requirement: A Business Central app update introduces a new data model but has no migration path for old subscription records. There, extension upgrades must preserve and transform existing data rather than assuming a fresh installation on each new version. In the current situation, A publisher's extension requires another vendor app but its manifest does not declare that dependency. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. Acceptance requires al symbols resolve and deployment confirms all required compatible dependency apps are installed.

D:

This choice primarily fits a different requirement: A maintenance partner wants shared tax calculations in one reusable module rather than copied into three customer extensions. There, modular application dependencies allow multiple extensions to consume the same library behavior without copying implementation. In the current situation, A publisher's extension requires another vendor app but its manifest does not declare that dependency. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. Acceptance requires al symbols resolve and deployment confirms all required compatible dependency apps are installed.

Question 58

A publisher's extension requires another vendor app but its manifest does not declare that dependency. The developer recommends the following change: Declare the dependent application in app.json and install compatible prerequisites before publishing. Which technical explanation most directly justifies it in this case?

  1. Publishing a local app package does not fulfill the marketplace's validation, policy, listing, and lifecycle requirements
  2. Extension upgrades must preserve and transform existing data rather than assuming a fresh installation on each new version
  3. Modular application dependencies allow multiple extensions to consume the same library behavior without copying implementation
  4. Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability

Explanation

Correct Answer

D:

Extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. It connects the proposed action to the exact failure or requirement—A publisher's extension requires another vendor app but its manifest does not declare that dependency. Confirmation would be al symbols resolve and deployment confirms all required compatible dependency apps are installed.

Incorrect Answers

A:

That mechanism explains why the alternative action—follow the Microsoft marketplace technical validation and submission process for the packaged app—helps in another case. It does not justify the proposed fix here; extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. The distinguishing requirement is: A publisher's extension requires another vendor app but its manifest does not declare that dependency.

B:

That mechanism explains why the alternative action—plan the app's upgrade and data-migration lifecycle together with its versioned release—helps in another case. It does not justify the proposed fix here; extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. The distinguishing requirement is: A publisher's extension requires another vendor app but its manifest does not declare that dependency.

C:

That mechanism explains why the alternative action—put the reusable capability in a separate dependency app with a documented interface—helps in another case. It does not justify the proposed fix here; extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. The distinguishing requirement is: A publisher's extension requires another vendor app but its manifest does not declare that dependency.

Question 59

A publisher's extension requires another vendor app but its manifest does not declare that dependency. The team implemented a change aligned with this plan: Declare the dependent application in app.json and install compatible prerequisites before publishing. Which acceptance result specifically verifies that the reported problem is resolved?

  1. AL symbols resolve and deployment confirms all required compatible dependency apps are installed
  2. The package passes applicable marketplace validation and the listing is accepted through the publisher process
  3. A tenant with representative old data upgrades and the migrated records remain correct and queryable
  4. Each consuming app resolves the shared capability and its tests pass against one versioned library

Explanation

Correct Answer

A:

AL symbols resolve and deployment confirms all required compatible dependency apps are installed. This is stronger than an unrelated health check because the desired design action is declare the dependent application in app.json and install compatible prerequisites before publishing, and extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability. The local requirement is: A publisher's extension requires another vendor app but its manifest does not declare that dependency.

Incorrect Answers

B:

This would verify follow the Microsoft marketplace technical validation and submission process for the packaged app, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A publisher's extension requires another vendor app but its manifest does not declare that dependency. The decisive local proof is al symbols resolve and deployment confirms all required compatible dependency apps are installed.

C:

This would verify plan the app's upgrade and data-migration lifecycle together with its versioned release, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A publisher's extension requires another vendor app but its manifest does not declare that dependency. The decisive local proof is al symbols resolve and deployment confirms all required compatible dependency apps are installed.

D:

This would verify put the reusable capability in a separate dependency app with a documented interface, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A publisher's extension requires another vendor app but its manifest does not declare that dependency. The decisive local proof is al symbols resolve and deployment confirms all required compatible dependency apps are installed.

Question 60

A publisher's extension requires another vendor app but its manifest does not declare that dependency. A targeted trial still reproduces the original gap after the team attempted this change: Declare the dependent application in app.json and install compatible prerequisites before publishing. Which repair directly addresses the remaining defect?

  1. Address the submission validation failures and release the package through the documented marketplace channel
  2. Add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first
  3. Implement and test the relevant upgrade logic and data mapping before releasing the new app version
  4. Extract the common implementation, declare dependencies, and refactor consumers to call the shared module

Explanation

Correct Answer

B:

Add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first. This directly addresses the remaining defect for the requirement—A publisher's extension requires another vendor app but its manifest does not declare that dependency. It restores the mechanism described here: extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability.

Incorrect Answers

A:

This correction is for the separate condition: A vendor delivers a reusable invoice workflow but treats tenant-local publish as equivalent to completing AppSource validation. It would not directly restore the intended behavior in this situation: A publisher's extension requires another vendor app but its manifest does not declare that dependency. Here, add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first, because extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability.

C:

This correction is for the separate condition: A loyalty extension changes field semantics while existing customer history must remain usable during upgrade. It would not directly restore the intended behavior in this situation: A publisher's extension requires another vendor app but its manifest does not declare that dependency. Here, add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first, because extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability.

D:

This correction is for the separate condition: A vendor has shipping, billing, and returns apps duplicating the same currency-conversion routine. It would not directly restore the intended behavior in this situation: A publisher's extension requires another vendor app but its manifest does not declare that dependency. Here, add or correct the dependency declaration and version, obtain symbols, and deploy prerequisite apps first, because extension package dependencies describe required apps and supported versions for symbol resolution and runtime availability.


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