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Exam Code: DP-800

Exam Name: Developing AI-Enabled Database Solutions

Certification Provider: Microsoft

Corresponding Certification: Microsoft Certified: SQL AI Developer Associate

Microsoft DP-800 Questions & Answers

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Microsoft DP-800 Practice Test 66

Question 650

An Azure SQL table contains textual cases but the vector column is always NULL. Following remediation, what safeguard BEST prevents a repeat of this specific failure?

  1. Alert on per-document cost and failed queue age.
  2. Validate dimension and model version before inserting.
  3. Version endpoint changes and restrict model creation rights.
  4. Protect queue durability and retry idempotently.

Explanation

Correct Answer

B:

Validate dimension and model version before inserting. This guards against recurrence because embeddings are computed numeric representations and are not created merely by defining a VECTOR column. The direct remediation is: Call the approved embedding model through a supported integration and store fixed-dimension results.

Incorrect Answers

A:

Alert on per-document cost and failed queue age. The current task instead requires this action: validate dimension and model version before inserting.

C:

Version endpoint changes and restrict model creation rights. The current task instead requires this action: validate dimension and model version before inserting.

D:

Protect queue durability and retry idempotently. The current task instead requires this action: validate dimension and model version before inserting.

Question 651

A mobile application needs standard resource CRUD with query-string filters rather than a custom GraphQL client. What is the MOST appropriate immediate corrective approach?

  1. Test protocol-specific behavior and configure supported methods deliberately.
  2. Use versioned configuration and a staged deployment/rollback strategy.
  3. Expose an authorized DAB REST endpoint with approved methods and resource paths.
  4. Parameterize the DAB data source using supported environment variables or secret integration.

Explanation

Correct Answer

C:

Expose an authorized DAB REST endpoint with approved methods and resource paths. This targets the primary issue because REST endpoint mapping supplies predictable URLs and HTTP operations. Verification: GET/PATCH tests enforce intended roles and return expected status codes. Prevent recurrence: Disallow unneeded mutation verbs and log requests.

Incorrect Answers

A:

The two interfaces expose related data but have different query syntax and operation models.

B:

API endpoint changes can break consumers even if the underlying database remains healthy.

D:

Configuration must resolve the correct database per environment without leaking secrets.

Question 652

A managed Azure SQL database experiences variable latency but no server-level OS metrics are available. What observed evidence would BEST confirm successful remediation?

  1. Different representative parameter values meet latency targets after tuning.
  2. Simultaneous sale tests yield at most the available stock quantity.
  3. A stale client receives a conflict and cannot overwrite the newer row.
  4. The slow query and time window are identified from supported telemetry.

Explanation

Correct Answer

D:

The slow query and time window are identified from supported telemetry. This is the decisive observable evidence after implementing use Query Performance Insight and supported Azure/SQL monitoring evidence. It tests the underlying requirement: Platform-native query insight tools expose historical workload statistics for managed instances.

Incorrect Answers

A:

Different representative parameter values meet latency targets after tuning. However, that result would not establish the required outcome: the slow query and time window are identified from supported telemetry.

B:

Simultaneous sale tests yield at most the available stock quantity. However, that result would not establish the required outcome: the slow query and time window are identified from supported telemetry.

C:

A stale client receives a conflict and cannot overwrite the newer row. However, that result would not establish the required outcome: the slow query and time window are identified from supported telemetry.

Question 653

A team grants db_owner to a reporting account expecting DDM to hide confidential salaries. What is the MOST relevant technical distinction in this situation?

  1. High-privilege identities can typically view underlying unmasked values.
  2. Authorized query transformations and inference can expose sensitive values despite masking.
  3. An open endpoint may expose inputs, outputs or costly compute to unauthorized callers.
  4. API generation does not automatically imply that exposed data is appropriately authorized.

Explanation

Correct Answer

A:

High-privilege identities can typically view underlying unmasked values. This explains why the corrective action is to replace excessive privileges with minimum SELECT and no UNMASK entitlement. Confirm the diagnosis when a role-based test demonstrates restricted account values are masked.

Incorrect Answers

B:

Authorized query transformations and inference can expose sensitive values despite masking. The actual technical constraint is that high-privilege identities can typically view underlying unmasked values.

C:

An open endpoint may expose inputs, outputs or costly compute to unauthorized callers. The actual technical constraint is that high-privilege identities can typically view underlying unmasked values.

D:

API generation does not automatically imply that exposed data is appropriately authorized. The actual technical constraint is that high-privilege identities can typically view underlying unmasked values.

Question 654

A service treats HTTP 429 from a model as permanent data corruption and deletes pending records. Which ongoing control is MOST relevant after the issue is fixed?

  1. Monitor truncation and fall back to SQL aggregates for precise counts.
  2. Cap retries and alert on repeated model service failures.
  3. Keep business arithmetic outside uncontrolled model generation.
  4. Audit access metadata and citation validity.

Explanation

Correct Answer

B:

Cap retries and alert on repeated model service failures. This guards against recurrence because rate limiting is often transient and should not erase durable database work. The direct remediation is: Implement bounded retry/backoff with idempotency and dead-letter handling.

Incorrect Answers

A:

Monitor truncation and fall back to SQL aggregates for precise counts.

C:

Keep business arithmetic outside uncontrolled model generation. The current task instead requires this action: cap retries and alert on repeated model service failures.

D:

Audit access metadata and citation validity. The current task instead requires this action: cap retries and alert on repeated model service failures.

Question 655

A new index exists in a branch but production queries still use the prior plan. What is the MOST appropriate immediate corrective approach?

  1. Include an appropriate staged data migration and backfill before constraint enforcement.
  2. Enforce protected branches and required pull-request approvals.
  3. Build/publish the reviewed SQL Database Project to the intended target with verification.
  4. Configure CODEOWNERS and required reviews for the finance database paths.

Explanation

Correct Answer

C:

Build/publish the reviewed SQL Database Project to the intended target with verification. This targets the primary issue because changing project source alone does not apply DDL to the deployed database. Verification: After publish, the target contains the intended index and tested workload improves. Prevent recurrence: Run deployment reports and a verified rollback strategy.

Incorrect Answers

A:

Including an appropriate staged data migration and backfill before constraint enforcement would not correct a new index exists in a branch but production queries still use the prior plan. Build/publish the reviewed SQL Database Project to the intended target with verification.

B:

Branch policies are governance controls that prevent unreviewed deployment inputs.

D:

Configuring CODEOWNERS and required reviews for the finance database paths would not correct a new index exists in a branch but production queries still use the prior plan. Build/publish the reviewed SQL Database Project to the intended target with verification.

Question 656

A SQL chat assistant needs to read schema metadata but must never issue UPDATE statements. What observed evidence would BEST confirm successful remediation?

  1. An audit shows requests use the intended approved endpoint.
  2. Test prompts contain representative synthetic values, not real identifiers.
  3. A test session follows enterprise policy without exposing restricted repo content.
  4. A test tool call reads metadata while unauthorized writes are denied.

Explanation

Correct Answer

D:

A test tool call reads metadata while unauthorized writes are denied. This is the decisive observable evidence after implementing configure MCP tools with read-only permissions and disable unneeded write-capable tools. It tests the underlying requirement: Tool scope governs what the model can invoke beyond ordinary chat text.

Incorrect Answers

A:

An audit shows requests use the intended approved endpoint. However, that result would not establish the required outcome: a test tool call reads metadata while unauthorized writes are denied.

B:

Test prompts contain representative synthetic values, not real identifiers. However, that result would not establish the required outcome: a test tool call reads metadata while unauthorized writes are denied.

C:

A test session follows enterprise policy without exposing restricted repo content. However, that result would not establish the required outcome: a test tool call reads metadata while unauthorized writes are denied.

Question 657

A contractor supplies an unknown MCP server URL that advertises unrestricted database tools. What is the MOST relevant technical distinction in this situation?

  1. A malicious or compromised MCP server may exfiltrate data or supply unsafe tool behavior.
  2. MCP access to a lakehouse is constrained by Fabric and identity permissions.
  3. Generated code can violate least privilege even if it appears syntactically correct.
  4. Copilot in Fabric availability can depend on region, capacity and tenant policies.

Explanation

Correct Answer

A:

A malicious or compromised MCP server may exfiltrate data or supply unsafe tool behavior. This explains why the corrective action is to reject the endpoint until source, TLS identity and tool effects are reviewed. Confirm the diagnosis when only the allowlisted server appears and controlled test queries succeed.

Incorrect Answers

B:

MCP access to a lakehouse is constrained by Fabric and identity permissions. The actual technical constraint is that a malicious or compromised MCP server may exfiltrate data or supply unsafe tool behavior.

C:

Generated code can violate least privilege even if it appears syntactically correct. The actual technical constraint is that a malicious or compromised MCP server may exfiltrate data or supply unsafe tool behavior.

D:

Copilot in Fabric availability can depend on region, capacity and tenant policies. The actual technical constraint is that a malicious or compromised MCP server may exfiltrate data or supply unsafe tool behavior.

Question 658

A developer assumes a CTE named in one statement remains available to the next statement. What maintenance or governance control BEST reduces recurrence of this problem?

  1. Set sensible MAXRECURSION and detect cycles.
  2. Document whether reusable results require temp tables or views.
  3. Include a stable tie-breaker and monitor late events.
  4. Specify missing predecessor behavior explicitly.

Explanation

Correct Answer

B:

Document whether reusable results require temp tables or views. This guards against recurrence because a CTE scope is limited to the single consuming statement. The direct remediation is: Repeat the expression or persist intermediate results in a temporary table when necessary.

Incorrect Answers

A:

Set sensible MAXRECURSION and detect cycles. The current task instead requires this action: document whether reusable results require temp tables or views.

C:

Include a stable tie-breaker and monitor late events. The current task instead requires this action: document whether reusable results require temp tables or views.

D:

Specifying missing predecessor behavior explicitly addresses a different database behavior; the relevant distinction is that document whether reusable results require temp tables or views.

Question 659

A security team treats DDM as protection against users with broad SELECT and inference query rights. Which implementation decision BEST addresses this requirement?

  1. Replace excessive privileges with minimum SELECT and no UNMASK entitlement.
  2. Scope MCP tool actions and require human confirmation for consequential changes.
  3. Combine masking with column permissions and other controls based on actual threat model.
  4. Require approved identity authentication and network controls for the inference endpoint.

Explanation

Correct Answer

C:

Combine masking with column permissions and other controls based on actual threat model. This targets the primary issue because authorized query transformations and inference can expose sensitive values despite masking. Verification: A simulated low-privilege role cannot infer restricted personal identifiers. Prevent recurrence: Review grants and test bypass paths.

Incorrect Answers

A:

Replacing excessive privileges with minimum SELECT and no UNMASK entitlement would not correct a security team treats DDM as protection against users with broad SELECT and inference query rights. Combine masking with column permissions and other controls based on actual threat model.

B:

Agents can turn natural-language requests into real database mutations if tools permit.

D:

An open endpoint may expose inputs, outputs or costly compute to unauthorized callers.

Question 660

A stored procedure passes DECIMAL prices as unquoted strings with locale commas and model summaries misstate values. Which measurable outcome BEST verifies that the requirement is satisfied?

  1. Captured outbound JSON excludes restricted notes and includes needed metrics.
  2. A fixture response yields the expected text without transport headers.
  3. The computed amount matches audited ledger SQL exactly.
  4. An API test reads amounts with correct decimal interpretation.

Explanation

Correct Answer

D:

An API test reads amounts with correct decimal interpretation. This is the decisive observable evidence after implementing serialize numeric SQL types as valid JSON numbers with explicit unit metadata. It tests the underlying requirement: JSON encoding preserves numeric representation better than locale-dependent concatenation.

Incorrect Answers

A:

Captured outbound JSON excludes restricted notes and includes needed metrics. However, that result would not establish the required outcome: an API test reads amounts with correct decimal interpretation.

B:

A fixture response yields the expected text without transport headers. However, that result would not establish the required outcome: an API test reads amounts with correct decimal interpretation.

C:

The computed amount matches audited ledger SQL exactly. However, that result would not establish the required outcome: an API test reads amounts with correct decimal interpretation.

Developing AI-Enabled Database Solutions (DP-800) Practice Tests