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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 MB-820 Practice Test 70

Question 690

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing external-service integration during a tenant acceptance test (MB820-6.1-187). The observed development issue is that a team builds the service URL by concatenating unchecked customer text into query parameters. Which recurring engineering check would best prevent this issue from returning?

  1. Include arrays with zero, one and many items in regression tests.
  2. Test URL encoding and parameter injection cases.
  3. Test timeouts and circuit-breaker behavior on critical workflows.
  4. Scan extension packages and telemetry for credential material.

Explanation

Correct Answer

B:

The ongoing check is to test URL encoding and parameter injection cases. This helps detect recurrence when a team builds the service URL by concatenating unchecked customer text into query parameters. The associated correction is to validate input and use appropriate URI encoding for outbound requests; a confirming result is that special characters do not change the endpoint or insert unexpected parameters.

Incorrect Answers

A:

“Include arrays with zero, one and many items in regression tests” supports the separate task “inspect JSON token types and iterate JsonArray elements using supported AL JSON APIs”, not the reported problem: a team builds the service URL by concatenating unchecked customer text into query parameters. This case instead calls for “Test URL encoding and parameter injection cases”.

C:

“Test timeouts and circuit-breaker behavior on critical workflows” concerns the alternative task “set an appropriate request timeout and implement a bounded failure path or asynchronous design where needed”, but the stated failure is that a team builds the service URL by concatenating unchecked customer text into query parameters. The required measure is to test URL encoding and parameter injection cases.

D:

The proposed “Scan extension packages and telemetry for credential material” tests a different control: use supported secret storage or secure authorization flow rather than embedding the token in source. The reported condition is that a team builds the service URL by concatenating unchecked customer text into query parameters; the more direct action is to test URL encoding and parameter injection cases.

Question 691

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing external-service integration during a tenant acceptance test (MB820-6.1-187). The observed development issue is that a team builds the service URL by concatenating unchecked customer text into query parameters. Which observed result would most clearly show the intended correction works?

  1. Special characters do not change the endpoint or insert unexpected parameters.
  2. The partner accepts a correctly formatted request and returns the expected schema.
  3. All shipment entries are parsed without truncation or runtime conversion errors.
  4. The integration authenticates while the package and logs contain no secret.

Explanation

Correct Answer

A:

This is the outcome that directly verifies the intended correction: special characters do not change the endpoint or insert unexpected parameters. The related solution is to validate input and use appropriate URI encoding for outbound requests; it is based on the principle that remote request construction must preserve input-data boundaries.

Incorrect Answers

B:

“The partner accepts a correctly formatted request and returns the expected schema” concerns the alternative task “build a JsonObject/JsonToken payload and set the appropriate content headers”, but the stated failure is that a team builds the service URL by concatenating unchecked customer text into query parameters. The required measure is to special characters do not change the endpoint or insert unexpected parameters.

C:

The proposed “All shipment entries are parsed without truncation or runtime conversion errors” tests a different control: inspect JSON token types and iterate JsonArray elements using supported AL JSON APIs. The reported condition is that a team builds the service URL by concatenating unchecked customer text into query parameters; the more direct action is to special characters do not change the endpoint or insert unexpected parameters.

D:

“The integration authenticates while the package and logs contain no secret” supports the separate task “use supported secret storage or secure authorization flow rather than embedding the token in source”, not the reported problem: a team builds the service URL by concatenating unchecked customer text into query parameters. This case instead calls for “Special characters do not change the endpoint or insert unexpected parameters”.

Question 692

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing external-service integration during a tenant acceptance test (MB820-6.1-187). The observed development issue is that a team builds the service URL by concatenating unchecked customer text into query parameters. Which AL development or design response most directly addresses this issue?

  1. Configure the required request headers and validated HTTP method before calling.
  2. Validate input and use appropriate URI encoding for outbound requests.
  3. Inspect JSON token types and iterate JsonArray elements using supported AL JSON APIs.
  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 validate input and use appropriate URI encoding for outbound requests. This addresses the specific failure where a team builds the service URL by concatenating unchecked customer text into query parameters. Acceptance evidence is that special characters do not change the endpoint or insert unexpected parameters.

Incorrect Answers

A:

“Configure the required request headers and validated HTTP method before calling” concerns the alternative task “configure the required request headers and validated HTTP method before calling”, but the stated failure is that a team builds the service URL by concatenating unchecked customer text into query parameters. The required measure is to validate input and use appropriate URI encoding for outbound requests.

C:

“Inspect JSON token types and iterate JsonArray elements using supported AL JSON APIs” supports the separate task “inspect JSON token types and iterate JsonArray elements using supported AL JSON APIs”, not the reported problem: a team builds the service URL by concatenating unchecked customer text into query parameters. This case instead calls for “validate input and use appropriate URI encoding for outbound requests”.

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 team builds the service URL by concatenating unchecked customer text into query parameters, so the direct response is to validate input and use appropriate URI encoding for outbound requests.

Question 693

At fictional Ironwood Charities, the Business Central development team is supporting grant funding and accounting and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.2-078). The observed development issue is that a monthly accrual process must update ledger support data and has no user-facing printable output. Which observed result would most clearly show the intended correction works?

  1. The batch updates expected records and does not produce a meaningless empty document.
  2. Output in each supported language renders translated headings with stable figures.
  3. The layout changes while all required report fields remain available.
  4. Output totals remain correct while runtime and database workload decline.

Explanation

Correct Answer

A:

This is the outcome that directly verifies the intended correction: the batch updates expected records and does not produce a meaningless empty document. The related solution is to use a ProcessingOnly report or suitable codeunit for the batch operation; it is based on the principle that processing-only reports serve batch procedures rather than printable layouts.

Incorrect Answers

B:

“Output in each supported language renders translated headings with stable figures” supports the separate task “use report labels and supported translations/localized layouts for user-facing captions”, not the reported problem: a monthly accrual process must update ledger support data and has no user-facing printable output. This case instead calls for “The batch updates expected records and does not produce a meaningless empty document”.

C:

“The layout changes while all required report fields remain available” concerns the separate step “keep dataset definitions separate from supported report layout updates or extensions”. The reported issue is that a monthly accrual process must update ledger support data and has no user-facing printable output, so the direct response is to the batch updates expected records and does not produce a meaningless empty document.

D:

“Output totals remain correct while runtime and database workload decline” concerns the alternative task “move expensive aggregations to appropriate query or dataset design and profile execution”, but the stated failure is that a monthly accrual process must update ledger support data and has no user-facing printable output. The required measure is to the batch updates expected records and does not produce a meaningless empty document.

Question 694

At fictional Ironwood Charities, the Business Central development team is supporting grant funding and accounting and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.2-078). The observed development issue is that a monthly accrual process must update ledger support data and has no user-facing printable output. Which recurring engineering check would best prevent this issue from returning?

  1. Test transaction behavior and error recovery on batch runs.
  2. Run culture-specific report rendering tests before distribution.
  3. Include sample render tests in report deployment gates.
  4. Test one-to-many and zero-child cases.

Explanation

Correct Answer

A:

The ongoing check is to test transaction behavior and error recovery on batch runs. This helps detect recurrence when a monthly accrual process must update ledger support data and has no user-facing printable output. The associated correction is to use a ProcessingOnly report or suitable codeunit for the batch operation; a confirming result is that the batch updates expected records and does not produce a meaningless empty document.

Incorrect Answers

B:

“Run culture-specific report rendering tests before distribution” concerns the separate step “use report labels and supported translations/localized layouts for user-facing captions”. The reported issue is that a monthly accrual process must update ledger support data and has no user-facing printable output, so the direct response is to test transaction behavior and error recovery on batch runs.

C:

“Include sample render tests in report deployment gates” concerns the alternative task “reconcile custom layout bindings with the current report dataset and supported extension schema”, but the stated failure is that a monthly accrual process must update ledger support data and has no user-facing printable output. The required measure is to test transaction behavior and error recovery on batch runs.

D:

The proposed “Test one-to-many and zero-child cases” tests a different control: adjust the parent/child dataitems, grouping and iteration behavior in the report model. The reported condition is that a monthly accrual process must update ledger support data and has no user-facing printable output; the more direct action is to test transaction behavior and error recovery on batch runs.

Question 695

At fictional Ironwood Charities, the Business Central development team is supporting grant funding and accounting and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.2-078). The observed development issue is that a monthly accrual process must update ledger support data and has no user-facing printable output. Which AL development or design response most directly addresses this issue?

  1. Adjust the parent/child dataitems, grouping and iteration behavior in the report model.
  2. Select the supported report output or layout capability appropriate for the intended Excel workflow.
  3. Create a report dataset with appropriate header and line dataitems and related links.
  4. Use a ProcessingOnly report or suitable codeunit for the batch operation.

Explanation

Correct Answer

D:

The most direct corrective response is to use a ProcessingOnly report or suitable codeunit for the batch operation. This addresses the specific failure where a monthly accrual process must update ledger support data and has no user-facing printable output. Acceptance evidence is that the batch updates expected records and does not produce a meaningless empty document.

Incorrect Answers

A:

“Adjust the parent/child dataitems, grouping and iteration behavior in the report model” concerns the separate step “adjust the parent/child dataitems, grouping and iteration behavior in the report model”. The reported issue is that a monthly accrual process must update ledger support data and has no user-facing printable output, so the direct response is to use a ProcessingOnly report or suitable codeunit for the batch operation.

B:

“Select the supported report output or layout capability appropriate for the intended Excel workflow” concerns the alternative task “select the supported report output or layout capability appropriate for the intended Excel workflow”, but the stated failure is that a monthly accrual process must update ledger support data and has no user-facing printable output. The required measure is to use a ProcessingOnly report or suitable codeunit for the batch operation.

C:

The proposed “Create a report dataset with appropriate header and line dataitems and related links” tests a different control: create a report dataset with appropriate header and line dataitems and related links. The reported condition is that a monthly accrual process must update ledger support data and has no user-facing printable output; the more direct action is to use a ProcessingOnly report or suitable codeunit for the batch operation.

Question 696

At fictional Ironwood Charities, the Business Central development team is supporting grant funding and accounting and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.2-078). The observed development issue is that a monthly accrual process must update ledger support data and has no user-facing printable output. Which Business Central or AL development principle best explains the right response?

  1. Processing-only reports serve batch procedures rather than printable layouts.
  2. Report dataitem hierarchy determines record repetition and scope.
  3. Request pages let users supply report parameters.
  4. Report datasets define the records that layouts can render.

Explanation

Correct Answer

A:

The governing principle is that processing-only reports serve batch procedures rather than printable layouts. The engineering response is to use a ProcessingOnly report or suitable codeunit for the batch operation. Verification should show that the batch updates expected records and does not produce a meaningless empty document.

Incorrect Answers

B:

The proposed “Report dataitem hierarchy determines record repetition and scope” tests a different control: adjust the parent/child dataitems, grouping and iteration behavior in the report model. The reported condition is that a monthly accrual process must update ledger support data and has no user-facing printable output; the more direct action is to use a ProcessingOnly report or suitable codeunit for the batch operation.

C:

“Request pages let users supply report parameters” supports the separate task “add a report request page exposing the supported filters and options”, not the reported problem: a monthly accrual process must update ledger support data and has no user-facing printable output. This case instead calls for “use a ProcessingOnly report or suitable codeunit for the batch operation”.

D:

“Report datasets define the records that layouts can render” concerns the separate step “create a report dataset with appropriate header and line dataitems and related links”. The reported issue is that a monthly accrual process must update ledger support data and has no user-facing printable output, so the direct response is to use a ProcessingOnly report or suitable codeunit for the batch operation.

Question 697

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-058). The observed development issue is that a table extension adds a required field to existing records without an initialization strategy. Which recurring engineering check would best prevent this issue from returning?

  1. Validate standard document layout behavior in acceptance tests.
  2. Test flowfield results after inserts, deletes and filters.
  3. Test new field defaults and historical record handling during upgrades.
  4. Scan custom table fields for missing or incorrect classification.

Explanation

Correct Answer

C:

The ongoing check is to test new field defaults and historical record handling during upgrades. This helps detect recurrence when a table extension adds a required field to existing records without an initialization strategy. The associated correction is to use a compatible field design and controlled initialization that respects existing rows; a confirming result is that installation succeeds and historical records remain valid under the new schema.

Incorrect Answers

A:

The proposed “Validate standard document layout behavior in acceptance tests” tests a different control: select the proper Document page pattern and related subpage for line data. The reported condition is that a table extension adds a required field to existing records without an initialization strategy; the more direct action is to test new field defaults and historical record handling during upgrades.

B:

“Test flowfield results after inserts, deletes and filters” supports the separate task “define an appropriate FlowField with a CalcFormula and use CalcFields where required”, not the reported problem: a table extension adds a required field to existing records without an initialization strategy. This case instead calls for “Test new field defaults and historical record handling during upgrades”.

D:

“Scan custom table fields for missing or incorrect classification” concerns the alternative task “set appropriate DataClassification properties on table fields and review their privacy meaning”, but the stated failure is that a table extension adds a required field to existing records without an initialization strategy. The required measure is to test new field defaults and historical record handling during upgrades.

Question 698

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-058). The observed development issue is that a table extension adds a required field to existing records without an initialization strategy. Which AL development or design response most directly addresses this issue?

  1. Set appropriate DataClassification properties on table fields and review their privacy meaning.
  2. Create a tableextension to add the field and a pageextension to surface it on the customer page.
  3. Select the proper Document page pattern and related subpage for line data.
  4. Use a compatible field design and controlled initialization that respects existing rows.

Explanation

Correct Answer

D:

The most direct corrective response is to use a compatible field design and controlled initialization that respects existing rows. This addresses the specific failure where a table extension adds a required field to existing records without an initialization strategy. Acceptance evidence is that installation succeeds and historical records remain valid under the new schema.

Incorrect Answers

A:

“Set appropriate DataClassification properties on table fields and review their privacy meaning” supports the separate task “set appropriate DataClassification properties on table fields and review their privacy meaning”, not the reported problem: a table extension adds a required field to existing records without an initialization strategy. This case instead calls for “use a compatible field design and controlled initialization that respects existing rows”.

B:

“Create a tableextension to add the field and a pageextension to surface it on the customer page” concerns the separate step “create a tableextension to add the field and a pageextension to surface it on the customer page”. The reported issue is that a table extension adds a required field to existing records without an initialization strategy, so the direct response is to use a compatible field design and controlled initialization that respects existing rows.

C:

“Select the proper Document page pattern and related subpage for line data” concerns the alternative task “select the proper Document page pattern and related subpage for line data”, but the stated failure is that a table extension adds a required field to existing records without an initialization strategy. The required measure is to use a compatible field design and controlled initialization that respects existing rows.

Question 699

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-058). The observed development issue is that a table extension adds a required field to existing records without an initialization strategy. Which Business Central or AL development principle best explains the right response?

  1. Page object properties control presentation and record selection separately from underlying table data.
  2. Data schema extensions must account for previously stored records.
  3. Structured reference values improve consistency and validation.
  4. Calculated fields derive values from data rather than storing independent copies.

Explanation

Correct Answer

B:

The governing principle is that data schema extensions must account for previously stored records. The engineering response is to use a compatible field design and controlled initialization that respects existing rows. Verification should show that installation succeeds and historical records remain valid under the new schema.

Incorrect Answers

A:

“Page object properties control presentation and record selection separately from underlying table data” concerns the separate step “use a List page with the correct SourceTable and supported filtering and view configuration”. The reported issue is that a table extension adds a required field to existing records without an initialization strategy, so the direct response is to use a compatible field design and controlled initialization that respects existing rows.

C:

The proposed “Structured reference values improve consistency and validation” tests a different control: model categories with a supported enum or related lookup table appropriate to extensibility requirements. The reported condition is that a table extension adds a required field to existing records without an initialization strategy; the more direct action is to use a compatible field design and controlled initialization that respects existing rows.

D:

“Calculated fields derive values from data rather than storing independent copies” supports the separate task “define an appropriate FlowField with a CalcFormula and use CalcFields where required”, not the reported problem: a table extension adds a required field to existing records without an initialization strategy. This case instead calls for “use a compatible field design and controlled initialization that respects existing rows”.

Question 700

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-058). The observed development issue is that a table extension adds a required field to existing records without an initialization strategy. Which observed result would most clearly show the intended correction works?

  1. The standard Customer table remains intact and the field is visible after extension installation.
  2. The approved role sees the field in the expected group without replacing the base page.
  3. Installation succeeds and historical records remain valid under the new schema.
  4. The UI supports header navigation and related line entry using the intended structure.

Explanation

Correct Answer

C:

This is the outcome that directly verifies the intended correction: installation succeeds and historical records remain valid under the new schema. The related solution is to use a compatible field design and controlled initialization that respects existing rows; it is based on the principle that data schema extensions must account for previously stored records.

Incorrect Answers

A:

“The standard Customer table remains intact and the field is visible after extension installation” concerns the alternative task “create a tableextension to add the field and a pageextension to surface it on the customer page”, but the stated failure is that a table extension adds a required field to existing records without an initialization strategy. The required measure is to installation succeeds and historical records remain valid under the new schema.

B:

The proposed “The approved role sees the field in the expected group without replacing the base page” tests a different control: add the field in the appropriate pageextension layout section and verify ApplicationArea and permissions. The reported condition is that a table extension adds a required field to existing records without an initialization strategy; the more direct action is to installation succeeds and historical records remain valid under the new schema.

D:

“The UI supports header navigation and related line entry using the intended structure” concerns the separate step “select the proper Document page pattern and related subpage for line data”. The reported issue is that a table extension adds a required field to existing records without an initialization strategy, so the direct response is to installation succeeds and historical records remain valid under the new schema.