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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 88

Question 870

A developer assumes a SQL firewall rule alone authenticates callers to Azure SQL. Which technical principle BEST explains the relevant design decision?

  1. Managed identities remove a static SQL password from the deployed application configuration.
  2. Network allowlisting does not establish user identity or object authorization.
  3. Read filtering alone does not necessarily stop unauthorized DML that changes row ownership.
  4. API generation does not automatically imply that exposed data is appropriately authorized.

Explanation

Correct Answer

B:

Network allowlisting does not establish user identity or object authorization. This explains why the corrective action is to require encrypted transport and a verified principal alongside network access restrictions. Confirm the diagnosis when an unapproved identity is denied even from an allowed network.

Incorrect Answers

A:

Managed identities remove a static SQL password from the deployed application configuration. The actual technical constraint is that network allowlisting does not establish user identity or object authorization.

C:

Read filtering alone does not necessarily stop unauthorized DML that changes row ownership. The actual technical constraint is that network allowlisting does not establish user identity or object authorization.

D:

API generation does not automatically imply that exposed data is appropriately authorized. The actual technical constraint is that network allowlisting does not establish user identity or object authorization.

Question 871

A product record contains English and Arabic descriptions for different locales. Following remediation, what safeguard BEST prevents a repeat of this specific failure?

  1. Define embedding input contract and refresh triggers per field.
  2. Monitor provider deprecations and certificate changes.
  3. Evaluate per-language drift and fallback routing.
  4. Reject unexpected fields and never trust generated totals without validation.

Explanation

Correct Answer

C:

Evaluate per-language drift and fallback routing. This guards against recurrence because embedding the wrong language source can degrade multilingual retrieval quality. The direct remediation is: Select language-appropriate content and model capabilities while retaining locale as metadata.

Incorrect Answers

A:

Define embedding input contract and refresh triggers per field. The current task instead requires this action: evaluate per-language drift and fallback routing.

B:

Monitor provider deprecations and certificate changes. The current task instead requires this action: evaluate per-language drift and fallback routing.

D:

Reject unexpected fields and never trust generated totals without validation.

Question 872

An engineer uses personal GitHub Copilot credentials for a restricted company repository. Which technical action BEST resolves the primary problem?

  1. Review Fabric capacity eligibility and tenant Copilot admin controls before testing.
  2. Reject the endpoint until source, TLS identity and tool effects are reviewed.
  3. Treat generated SQL as untrusted and require security review before execution.
  4. Switch to an organization-approved identity and governed Copilot configuration.

Explanation

Correct Answer

D:

Switch to an organization-approved identity and governed Copilot configuration. This targets the primary issue because personal and enterprise assistants can have different retention and policy controls. Verification: A test session follows enterprise policy without exposing restricted repo content. Prevent recurrence: Review extension policy and entitlements quarterly.

Incorrect Answers

A:

Copilot in Fabric availability can depend on region, capacity and tenant policies.

B:

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.

Question 873

A multitenant SQL application sometimes returns another tenant's invoices when a caller forgets a WHERE clause. Which test result BEST demonstrates that the intended solution is working?

  1. Cross-tenant test identities cannot read each other's invoice rows.
  2. A spoofed request cannot change access to another tenant's rows.
  3. The API executes the report but cannot drop objects or select unrelated tables.
  4. A simulated service administrator cannot erase the retained central record.

Explanation

Correct Answer

A:

Cross-tenant test identities cannot read each other's invoice rows. This is the decisive observable evidence after implementing implement an appropriate RLS security predicate tied to trusted tenant context. It tests the underlying requirement: RLS enforces row filtering in the database rather than relying on every query to remember a filter.

Incorrect Answers

B:

A spoofed request cannot change access to another tenant's rows. However, that result would not establish the required outcome: cross-tenant test identities cannot read each other's invoice rows.

C:

The API executes the report but cannot drop objects or select unrelated tables. However, that result would not establish the required outcome: cross-tenant test identities cannot read each other's invoice rows.

D:

A simulated service administrator cannot erase the retained central record. However, that result would not establish the required outcome: cross-tenant test identities cannot read each other's invoice rows.

Question 874

An embedding pipeline includes account passwords and credit card numbers in text sent to an external model. Which technical principle BEST explains the relevant design decision?

  1. Frequent numeric fields add update cost and can weaken semantic relevance.
  2. Embedding inputs can expose or encode sensitive data without adding retrieval value.
  3. Asynchronous change-based updates decouple embedding cost from OLTP commit latency.
  4. Model size increases cost and latency without guaranteeing proportional quality gains.

Explanation

Correct Answer

B:

Embedding inputs can expose or encode sensitive data without adding retrieval value. This explains why the corrective action is to exclude confidential credential fields and embed only approved relevant content. Confirm the diagnosis when a sampled outbound model request contains no restricted secrets.

Incorrect Answers

A:

Frequent numeric fields add update cost and can weaken semantic relevance. The actual technical constraint is that embedding inputs can expose or encode sensitive data without adding retrieval value.

C:

Asynchronous change-based updates decouple embedding cost from OLTP commit latency. The actual technical constraint is that embedding inputs can expose or encode sensitive data without adding retrieval value.

D:

Modeling size increases cost and latency without guaranteeing proportional quality gains concerns a different mechanism; the relevant technical point is that embedding inputs can expose or encode sensitive data without adding retrieval value.

Question 875

An engineer drops an external model while stored procedures still depend on it. Which ongoing control is MOST relevant after the issue is fixed?

  1. Inspect invocation logs and rate limits.
  2. Keep source citations and access metadata attached.
  3. Use deprecation windows and rollback references.
  4. Review boundary cases during chunker changes.

Explanation

Correct Answer

C:

Use deprecation windows and rollback references. This guards against recurrence because database objects referring to external model names may fail after removal. The direct remediation is: Inventory dependent objects and stage a compatible model transition.

Incorrect Answers

A:

Inspect invocation logs and rate limits. The current task instead requires this action: use deprecation windows and rollback references.

B:

Keep source citations and access metadata attached. The current task instead requires this action: use deprecation windows and rollback references.

D:

Review boundary cases during chunker changes. The current task instead requires this action: use deprecation windows and rollback references.

Question 876

A REST API must execute an approved report stored procedure but not arbitrary SQL. What is the MOST appropriate immediate corrective approach?

  1. Map the database view as a DAB entity and restrict permitted operations.
  2. Configure a GraphQL endpoint and modeled relationships for approved entities.
  3. Create and validate a supported DAB JSON configuration with connection and entity definitions.
  4. Expose the stored procedure via a restricted DAB stored-procedure entity with execute rights.

Explanation

Correct Answer

D:

Expose the stored procedure via a restricted DAB stored-procedure entity with execute rights. This targets the primary issue because DAB can surface declared stored procedures without granting arbitrary query execution. Verification: An authorized request runs the report and rejects unauthorized procedure calls. Prevent recurrence: Validate input parameters and avoid excessive execution privileges.

Incorrect Answers

A:

Mapping a view can create a governed projection with narrower permissions than base tables.

B:

GraphQL can request related fields through a typed schema rather than repeated round trips.

C:

DAB generates endpoints from explicit configuration rather than automatically exposing every table.

Question 877

A DiskANN-style vector index returns low recall after a data distribution change. What observed evidence would BEST confirm successful remediation?

  1. Recall improves on a holdout set while latency remains acceptable.
  2. A representative mixed read/write load meets agreed SLOs.
  3. Capacity forecast and staging index build fit the agreed budget.
  4. The returned top five match a brute-force reference set.

Explanation

Correct Answer

A:

Recall improves on a holdout set while latency remains acceptable. This is the decisive observable evidence after implementing benchmark supported ANN index tuning and rebuild/retraining options against exact KNN results. It tests the underlying requirement: Approximate structures trade memory, speed and recall depending on data and configuration.

Incorrect Answers

B:

A representative mixed read/write load meets agreed SLOs. However, that result would not establish the required outcome: recall improves on a holdout set while latency remains acceptable.

C:

Capacity forecast and staging index build fit the agreed budget. However, that result would not establish the required outcome: recall improves on a holdout set while latency remains acceptable.

D:

The returned top five match a brute-force reference set. However, that result would not establish the required outcome: recall improves on a holdout set while latency remains acceptable.

Question 878

Two concurrent sessions read the same inventory stock and each sell the final item. What is the MOST relevant technical distinction in this situation?

  1. Optimistic concurrency only works if conflicts are detected, not silently overwritten.
  2. A read-then-write race can oversell without a concurrency constraint.
  3. A poor cardinality estimate can induce unsuitable joins and memory grants.
  4. Opposite lock acquisition sequences can form a cyclic wait.

Explanation

Correct Answer

B:

A read-then-write race can oversell without a concurrency constraint. This explains why the corrective action is to use appropriate locking or optimistic concurrency validation to make stock decrement atomic. Confirm the diagnosis when simultaneous sale tests yield at most the available stock quantity.

Incorrect Answers

A:

Optimistic concurrency only works if conflicts are detected, not silently overwritten. The actual technical constraint is that a read-then-write race can oversell without a concurrency constraint.

C:

A poor cardinality estimate can induce unsuitable joins and memory grants. The actual technical constraint is that a read-then-write race can oversell without a concurrency constraint.

D:

Opposite lock acquisition sequences can form a cyclic wait. The actual technical constraint is that a read-then-write race can oversell without a concurrency constraint.

Question 879

A support analyst must read a view but not query its underlying private tables directly. Which ongoing control is MOST relevant after the issue is fixed?

  1. Expire elevation and log the migration transaction.
  2. Document leakage tradeoffs before enabling secure enclaves.
  3. Review view definitions and permission chains.
  4. Test every write operation and auditing requirements.

Explanation

Correct Answer

C:

Review view definitions and permission chains. This guards against recurrence because exposing a constrained view can limit data surface without broad base-table rights. The direct remediation is: Grant SELECT on the approved view and validate ownership-chain and execution context behavior.

Incorrect Answers

A:

Expire elevation and log the migration transaction. The current task instead requires this action: review view definitions and permission chains.

B:

Document leakage tradeoffs before enabling secure enclaves. The current task instead requires this action: review view definitions and permission chains.

D:

Test every write operation and auditing requirements. The current task instead requires this action: review view definitions and permission chains.

Question 880

A product-description table updates frequently and embeddings must refresh asynchronously without heavy write transactions. What is the MOST appropriate immediate corrective approach?

  1. Use a supported Azure Functions SQL trigger binding with scoped credentials and durable progress state.
  2. Use stable chunk IDs and content hashes to refresh only changed segments.
  3. Keep rapidly changing structured quantities as filterable columns outside the descriptive embedding text.
  4. Use Change Tracking or CDC to identify changed records and process them in a background worker.

Explanation

Correct Answer

D:

Use Change Tracking or CDC to identify changed records and process them in a background worker. This targets the primary issue because asynchronous change-based updates decouple embedding cost from OLTP commit latency. Verification: Updated products receive new embeddings within the freshness SLA. Prevent recurrence: Handle replay, deletion and watermark recovery.

Incorrect Answers

A:

The binding can detect changes and invoke processing without polling arbitrary full tables.

B:

Using stable chunk IDs and content hashes to refresh only changed segments would not correct a product-description table updates frequently and embeddings must refresh asynchronously without heavy write transactions. Use Change Tracking or CDC to identify changed records and process them in a background worker.

C:

Frequent numeric fields add update cost and can weaken semantic relevance.

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