{"id":19299,"date":"2026-09-22T12:41:04","date_gmt":"2026-09-22T12:41:04","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=19299"},"modified":"2026-09-22T12:41:04","modified_gmt":"2026-09-22T12:41:04","slug":"microsoft-mb-820-practice-test-questions-and-exam-dumps-part19-q361-380","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/microsoft-mb-820-practice-test-questions-and-exam-dumps-part19-q361-380\/","title":{"rendered":"Microsoft MB-820 Practice Test Questions and Exam Dumps Part19 Q361-380"},"content":{"rendered":"

View Full <\/b>Microsoft MB-820 Exam Dumps<\/b><\/a> and Practice Test Dumps.<\/b><\/h2>\n

 <\/p>\n

Question 361<\/b><\/h3>\n

Which AL feature is used to define a reusable event that other extension code can subscribe to?<\/b><\/p>\n

    \n
  1. Event publisher<\/span><\/li>\n
  2. FieldGroup<\/span><\/li>\n
  3. Query column<\/span><\/li>\n
  4. PermissionSet<\/span><\/li>\n<\/ol>\n

    Correct Answer: 1<\/b><\/p>\n

    Explanation<\/b><\/p>\n

    An event publisher defines an event that other AL code can subscribe to. This supports an event-driven architecture where functionality can be extended without directly modifying the code that publishes the event. A publisher can expose an integration event or another supported event type, and subscribers can respond when that event occurs. FieldGroups organize fields, query columns define data returned by queries, and PermissionSets control access. Developers should design published events carefully because they can become part of an extension’s integration surface and may need to remain stable for consuming applications.<\/span><\/p>\n

    Question 362<\/b><\/h3>\n

    What is a major benefit of using integration events in an AL extension?<\/b><\/p>\n

      \n
    1. They allow other code to extend behavior without modifying the publisher directly<\/span><\/li>\n
    2. They automatically create database indexes<\/span><\/li>\n
    3. They replace all permission checks<\/span><\/li>\n
    4. They store external API credentials<\/span><\/li>\n<\/ol>\n

      Correct Answer: 1<\/b><\/p>\n

      Explanation<\/b><\/p>\n

      Integration events provide a mechanism for other code to respond to application behavior without directly changing the code that publishes the event. This supports extensibility and helps preserve the separation between base functionality and custom functionality. For example, an extension can publish an event after an important business operation, allowing subscribers to perform additional processing. Integration events do not create database indexes, replace permission checks, or store credentials. Developers should keep event contracts clear and stable because subscribers may rely on the event and its parameters to implement important business functionality.<\/span><\/p>\n

      Question 363<\/b><\/h3>\n

      Which property determines whether a codeunit maintains a single instance within its supported session scope?<\/b><\/p>\n

        \n
      1. SingleInstance<\/span><\/li>\n
      2. ApplicationArea<\/span><\/li>\n
      3. Editable<\/span><\/li>\n
      4. ObsoleteState<\/span><\/li>\n<\/ol>\n

        Correct Answer: 1<\/b><\/p>\n

        Explanation<\/b><\/p>\n

        The SingleInstance property determines whether a codeunit operates as a single instance within its supported session scope. This allows state held by the codeunit’s variables to remain available between calls during that instance’s lifetime. Single-instance behavior can be useful for certain shared state scenarios, but developers should use it carefully because retained state can make code more difficult to reason about. ApplicationArea controls feature visibility, Editable affects user editing, and ObsoleteState communicates whether an application element is being phased out. Clear documentation is important when persistent codeunit state is intentionally used.<\/span><\/p>\n

        Question 364<\/b><\/h3>\n

        Which AL object is best suited for defining reusable business logic independently from the user interface?<\/b><\/p>\n

          \n
        1. Codeunit<\/span><\/li>\n
        2. Page<\/span><\/li>\n
        3. FactBox<\/span><\/li>\n
        4. Report layout<\/span><\/li>\n<\/ol>\n

          Correct Answer: 1<\/b><\/p>\n

          Explanation<\/b><\/p>\n

          A Codeunit is designed to contain reusable application and business logic independently from the user interface. This separation allows the same processing rules to be called from pages, reports, background processes, integrations, or other codeunits. Pages primarily provide user interaction, FactBoxes display contextual information, and report layouts determine how report data is presented. Keeping business logic in codeunits can improve maintainability and testability because the logic does not need to be tied to a particular page. It also reduces duplication when multiple application components need to perform the same operation.<\/span><\/p>\n

          Question 365<\/b><\/h3>\n

          Which AL feature can be used to prevent users from changing a field through a page while still allowing the value to be displayed?<\/b><\/p>\n

            \n
          1. Editable property<\/span><\/li>\n
          2. Caption property<\/span><\/li>\n
          3. ToolTip property<\/span><\/li>\n
          4. ApplicationArea property<\/span><\/li>\n<\/ol>\n

            Correct Answer: 1<\/b><\/p>\n

            Explanation<\/b><\/p>\n

            The Editable property can control whether a supported page control allows user modification. Setting a control as non-editable allows its value to remain visible while preventing direct editing through that control. Caption controls the displayed name, ToolTip provides explanatory information, and ApplicationArea determines whether functionality is included in a configured application area. Developers should remember that page-level editability is not the same as security. If a value must be protected from unauthorized modification through every application path, appropriate permissions and business validation should also be considered.<\/span><\/p>\n

            Question 366<\/b><\/h3>\n

            Which AL feature allows a developer to add a new action to an existing standard page?<\/b><\/p>\n

              \n
            1. PageExtension<\/span><\/li>\n
            2. TableExtension<\/span><\/li>\n
            3. EnumExtension<\/span><\/li>\n
            4. Query<\/span><\/li>\n<\/ol>\n

              Correct Answer: 1<\/b><\/p>\n

              Explanation<\/b><\/p>\n

              PageExtension allows developers to extend an existing page and add supported controls, fields, groups, or actions. This is a core part of the Business Central extension model because custom functionality can be added without modifying the original page object. TableExtension is used to extend tables, EnumExtension adds values to existing enums, and Query retrieves structured data. When adding an action, developers should provide an appropriate caption and tooltip and ensure that the action respects the necessary permissions and validation rules. Actions should also be placed logically so users can find them easily.<\/span><\/p>\n

              Question 367<\/b><\/h3>\n

              Which AL mechanism can be used to define a relationship between a field and records in another table?<\/b><\/p>\n

                \n
              1. TableRelation<\/span><\/li>\n
              2. EventSubscriber<\/span><\/li>\n
              3. ErrorInfo<\/span><\/li>\n
              4. JsonToken<\/span><\/li>\n<\/ol>\n

                Correct Answer: 1<\/b><\/p>\n

                Explanation<\/b><\/p>\n

                TableRelation defines a relationship between a field and records in another table. It can help Business Central understand which records are valid references and can support lookup behavior and data consistency. EventSubscriber is used to respond to published events, ErrorInfo represents structured error information, and JsonToken is used for JSON processing. Developers should define table relationships carefully because they influence how users select related records and how data is validated. Appropriate relationships can improve data integrity and provide a better user experience when entering or selecting related information.<\/span><\/p>\n

                Question 368<\/b><\/h3>\n

                Which AL feature is most appropriate when an application needs to store a large binary object such as a file?<\/b><\/p>\n

                  \n
                1. Blob<\/span><\/li>\n
                2. Boolean<\/span><\/li>\n
                3. Enum<\/span><\/li>\n
                4. Integer<\/span><\/li>\n<\/ol>\n

                  Correct Answer: 1<\/b><\/p>\n

                  Explanation<\/b><\/p>\n

                  The Blob data type is designed for storing large binary or text-related content that does not fit naturally into ordinary scalar fields. It can be used with streams to read or write the stored content. For example, applications may use BLOB-related functionality when handling file content or other larger data objects. Boolean stores true or false values, Enum represents predefined choices, and Integer stores whole numbers. Developers working with BLOB data should consider stream handling, storage requirements, performance, and whether the content should be stored directly or managed through another supported Business Central mechanism.<\/span><\/p>\n

                  Question 369<\/b><\/h3>\n

                  Which stream type is used to read data from a BLOB or other stream source?<\/b><\/p>\n

                    \n
                  1. OutStream<\/span><\/li>\n
                  2. InStream<\/span><\/li>\n
                  3. JsonObject<\/span><\/li>\n
                  4. RecordRef<\/span><\/li>\n<\/ol>\n

                    Correct Answer: 2<\/b><\/p>\n

                    Explanation<\/b><\/p>\n

                    InStream is used to read data sequentially from a stream source. It is commonly used when retrieving content from a BLOB or other stream-compatible source. Developers can read different supported data types from the stream depending on the application requirement. OutStream is used for writing data into a stream, while JsonObject and RecordRef serve different purposes. Stream-based operations are useful for handling larger content because the application can process the data through a controlled stream rather than treating the entire object as a simple scalar value. Correct stream direction is important for reliable processing.<\/span><\/p>\n

                    Question 370<\/b><\/h3>\n

                    Which AL stream type is used to write data into a BLOB or another stream destination?<\/b><\/p>\n

                      \n
                    1. InStream<\/span><\/li>\n
                    2. OutStream<\/span><\/li>\n
                    3. FieldRef<\/span><\/li>\n
                    4. JsonToken<\/span><\/li>\n<\/ol>\n

                      Correct Answer: 2<\/b><\/p>\n

                      Explanation<\/b><\/p>\n

                      OutStream is used to write data into a stream destination. It is commonly used when an application needs to create or update content stored in a BLOB or another supported stream-based object. InStream performs the opposite operation by reading data. FieldRef provides dynamic access to a field, while JsonToken represents a JSON value. When writing stream data, developers should ensure that the destination is properly initialized and that the appropriate data format is used. Stream operations should also be tested with different content sizes to ensure reliable behavior.<\/span><\/p>\n

                      Question 371<\/b><\/h3>\n

                      Which AL object is commonly used to import or export structured data using XML-based formats?<\/b><\/p>\n

                        \n
                      1. XMLport<\/span><\/li>\n
                      2. Codeunit<\/span><\/li>\n
                      3. PermissionSet<\/span><\/li>\n
                      4. Interface<\/span><\/li>\n<\/ol>\n

                        Correct Answer: 1<\/b><\/p>\n

                        Explanation<\/b><\/p>\n

                        An XMLport is designed to import or export structured data, particularly when working with XML-based formats. XMLports can define the data structure and direction of data exchange and are useful in integration and data-transfer scenarios. Codeunits contain business logic, PermissionSets control access, and Interfaces define behavioral contracts. Although modern integrations frequently use JSON and APIs, XMLports remain useful for supported XML-based exchange requirements. Developers should design XMLport structures carefully and validate imported data because external files may contain missing, invalid, or unexpected information.<\/span><\/p>\n

                        Question 372<\/b><\/h3>\n

                        Which feature is commonly used when a Business Central application needs to exchange JSON data with an external web service?<\/b><\/p>\n

                          \n
                        1. JsonObject and related JSON data types<\/span><\/li>\n
                        2. FieldGroup only<\/span><\/li>\n
                        3. PermissionSetExtension only<\/span><\/li>\n
                        4. Page Caption<\/span><\/li>\n<\/ol>\n

                          Correct Answer: 1<\/b><\/p>\n

                          Explanation<\/b><\/p>\n

                          JsonObject and related JSON data types such as JsonArray, JsonToken, and JsonValue are commonly used when Business Central communicates with external services that exchange JSON. Developers can construct JSON requests, parse JSON responses, and access individual properties within a payload. FieldGroups, permissions, and captions serve different purposes. When processing JSON received from an external system, developers should validate the response structure rather than assuming that every expected property exists. Proper JSON handling also includes appropriate error handling for malformed or unexpected payloads.<\/span><\/p>\n

                          Question 373<\/b><\/h3>\n

                          What should an AL developer generally check after receiving an HTTP response from an external service?<\/b><\/p>\n

                            \n
                          1. The response status and relevant content<\/span><\/li>\n
                          2. Only the page caption<\/span><\/li>\n
                          3. Only the current user’s language<\/span><\/li>\n
                          4. The table’s FlowField definitions<\/span><\/li>\n<\/ol>\n

                            Correct Answer: 1<\/b><\/p>\n

                            Explanation<\/b><\/p>\n

                            After receiving an HTTP response, the developer should check the response status and then process the content according to the expected response format. A successful HTTP status does not necessarily guarantee that the returned content contains exactly what the application expects. Developers should therefore validate both the status and relevant response data. Page captions, user language, and FlowField definitions are unrelated to HTTP response validation. Proper response checking allows applications to distinguish successful requests from authentication failures, missing resources, server errors, malformed responses, and other integration problems.<\/span><\/p>\n

                            Question 374<\/b><\/h3>\n

                            Which HTTP status code generally indicates that a new resource was successfully created?<\/b><\/p>\n

                              \n
                            1. 404<\/span><\/li>\n
                            2. 201<\/span><\/li>\n
                            3. 401<\/span><\/li>\n
                            4. 500<\/span><\/li>\n<\/ol>\n

                              Correct Answer: 2<\/b><\/p>\n

                              Explanation<\/b><\/p>\n

                              HTTP status code 201 generally indicates that a request successfully created a new resource. This status is commonly associated with POST operations that create records or resources on an external service. Status 404 indicates that a requested resource was not found, 401 generally indicates an authentication problem, and 500 indicates an internal server error. When developing AL integrations, checking the status code helps determine what happened during an HTTP operation. Developers should also inspect the response content when the external service provides additional information about the newly created resource.<\/span><\/p>\n

                              Question 375<\/b><\/h3>\n

                              Which HTTP status code commonly indicates that a requested resource could not be found?<\/b><\/p>\n

                                \n
                              1. 200<\/span><\/li>\n
                              2. 201<\/span><\/li>\n
                              3. 404<\/span><\/li>\n
                              4. 204<\/span><\/li>\n<\/ol>\n

                                Correct Answer: 3<\/b><\/p>\n

                                Explanation<\/b><\/p>\n

                                HTTP status code 404 generally indicates that the requested resource could not be found. In an AL integration, this might occur when an API endpoint refers to an invalid resource identifier or when a requested record no longer exists in the external system. Status 200 indicates successful processing, 201 commonly indicates successful resource creation, and 204 indicates successful processing without response content. Developers should handle a 404 response appropriately rather than assuming it represents a temporary server failure. The application may need to report the missing resource or adjust its processing logic.<\/span><\/p>\n

                                Question 376<\/b><\/h3>\n

                                Which AL practice helps prevent external API credentials from being accidentally exposed?<\/b><\/p>\n

                                  \n
                                1. Store credentials in source-code comments<\/span><\/li>\n
                                2. Include tokens in telemetry<\/span><\/li>\n
                                3. Use appropriate secure credential-management mechanisms<\/span><\/li>\n
                                4. Place passwords in labels<\/span><\/li>\n<\/ol>\n

                                  Correct Answer: 3<\/b><\/p>\n

                                  Explanation<\/b><\/p>\n

                                  External API credentials should be managed through appropriate secure mechanisms rather than being embedded in AL source code, comments, labels, or telemetry. Source code can be stored in repositories and shared with development teams, while telemetry and logs may be retained or accessed by multiple systems. Secure credential handling reduces the risk of accidental disclosure and makes credential rotation easier. Developers should also avoid printing tokens in error messages or debugging output. Security should be considered throughout the integration lifecycle, including development, testing, deployment, monitoring, and maintenance.<\/span><\/p>\n

                                  Question 377<\/b><\/h3>\n

                                  Which AL practice can help identify performance problems in a deployed application?<\/b><\/p>\n

                                    \n
                                  1. Appropriate telemetry and diagnostic monitoring<\/span><\/li>\n
                                  2. Removing all filters<\/span><\/li>\n
                                  3. Disabling error handling<\/span><\/li>\n
                                  4. Storing credentials in logs<\/span><\/li>\n<\/ol>\n

                                    Correct Answer: 1<\/b><\/p>\n

                                    Explanation<\/b><\/p>\n

                                    Telemetry and appropriate diagnostic monitoring can help identify performance problems in deployed applications. Useful diagnostic information can provide insight into execution behavior, failures, slow operations, and other conditions that may require investigation. Developers should design telemetry carefully so that it provides actionable information without exposing sensitive data. Removing filters generally increases database work, while disabling error handling makes problems harder to diagnose. Logging credentials is also unsafe. Performance monitoring should complement good application design, including efficient database access, suitable filtering, controlled transactions, and appropriate background-processing strategies.<\/span><\/p>\n

                                    Question 378<\/b><\/h3>\n

                                    Which development tool is commonly used by AL developers to set breakpoints and debug extension code?<\/b><\/p>\n

                                      \n
                                    1. Visual Studio Code<\/span><\/li>\n
                                    2. XMLport<\/span><\/li>\n
                                    3. Job Queue<\/span><\/li>\n
                                    4. PermissionSet<\/span><\/li>\n<\/ol>\n

                                      Correct Answer: 1<\/b><\/p>\n

                                      Explanation<\/b><\/p>\n

                                      Visual Studio Code is commonly used for AL development and provides debugging capabilities for Business Central extensions. Developers can set breakpoints, inspect variables, step through code, and investigate application behavior during a debugging session when the environment is configured appropriately. XMLports handle structured data exchange, Job Queue supports scheduled processing, and PermissionSets control access. Effective debugging should be combined with automated tests and proper diagnostic practices rather than being the only method of finding problems. Developers should also avoid exposing sensitive information while investigating integration or authentication issues.<\/span><\/p>\n

                                      Question 379<\/b><\/h3>\n

                                      Which AL project file is used to define extension dependencies on other applications?<\/b><\/p>\n

                                        \n
                                      1. app.json<\/span><\/li>\n
                                      2. launch.json<\/span><\/li>\n
                                      3. README.md<\/span><\/li>\n
                                      4. ErrorInfo<\/span><\/li>\n<\/ol>\n

                                        Correct Answer: 1<\/b><\/p>\n

                                        Explanation<\/b><\/p>\n

                                        The app.json file contains extension metadata, including dependency declarations for other applications. Dependencies allow the AL compiler and Business Central environment to understand which applications are required for the extension to compile and operate correctly. launch.json serves debugging and environment launch configuration purposes. README.md is documentation rather than an AL metadata file, and ErrorInfo is an application data type. Developers should keep dependency versions and application compatibility requirements accurate because incorrect dependency declarations can prevent compilation, publishing, or successful deployment.<\/span><\/p>\n

                                        Question 380<\/b><\/h3>\n

                                        What is a key reason for using version control with an AL extension project?<\/b><\/p>\n

                                          \n
                                        1. To track changes and support safe collaboration<\/span><\/li>\n
                                        2. To automatically create permission sets<\/span><\/li>\n
                                        3. To eliminate application testing<\/span><\/li>\n
                                        4. To replace Business Central tables<\/span><\/li>\n<\/ol>\n

                                          Correct Answer: 1<\/b><\/p>\n

                                          Explanation<\/b><\/p>\n

                                          Version control allows developers to track changes to AL source code, review modifications, collaborate with other developers, and restore previous versions when necessary. It is an important part of professional extension development because projects can evolve through many releases and multiple contributors. Version control does not automatically create permissions, eliminate testing, or replace database tables. Combined with code reviews, automated builds, and testing, source control can provide a structured development workflow. It also helps teams identify which changes were introduced in a particular revision when investigating defects or preparing new releases.<\/span><\/p>\n

                                           <\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Microsoft MB-820 Exam Dumps and Practice Test Dumps.   Question 361 Which AL feature is used to define a reusable event that other extension code can subscribe to? Event publisher FieldGroup Query column PermissionSet Correct Answer: 1 Explanation An event publisher defines an event that other AL code can subscribe to. This supports […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1648,1647],"tags":[],"_links":{"self":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/19299"}],"collection":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/comments?post=19299"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/19299\/revisions"}],"predecessor-version":[{"id":19300,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/19299\/revisions\/19300"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=19299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=19299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=19299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}