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Developing AI-Enabled Database Solutions DP-800 Practice Test 74

Question 730

A data-quality job checks stored vector dimensions during migration

Which SQL design or implementation decision most directly addresses this requirement?

  1. Normalize vectors when appropriate for the chosen similarity metric
  2. Use VECTORPROPERTY with the relevant property to inspect vector metadata
  3. Introduce tested diversity or deduplication rules after tenant-filtered candidate retrieval
  4. Combine structured SQL predicates with vector retrieval using the supported filter strategy

Explanation

Correct Answer

B:

Vector properties help validate dimensions and related characteristics before comparison or indexing.

Incorrect Answers

A:

Vector normalization removes magnitude effects for certain comparisons but must match model guidance and the intended ranking metric.

C:

Near-duplicate chunks can crowd top-K slots and lower answer coverage even with accurate vector ranking.

D:

Semantic relevance does not replace mandatory structured filters such as date, category or tenant.

Question 731

A business process needs orchestration when SQL changes and several external SaaS actions are required

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. A seeded event completes the approved stages and a transient connector failure follows the defined retry behavior
  2. A synthetic request can be followed through API and SQL dependency spans using the same trace context
  3. Replaying the same change does not duplicate business data and checkpoint recovery catches up accurately
  4. A production health test connects to the intended database without secrets in container images

Explanation

Correct Answer

A:

Logic Apps orchestrate heterogeneous connectors and retries more directly than embedding cross-service calls in a SQL trigger.

Incorrect Answers

B:

Distributed trace correlation helps associate API failures, dependency latency and service operations.

C:

At-least-once delivery and retries require idempotent consumers rather than relying on exactly-once invocation.

D:

Configuration separation allows consistent entities while credentials and endpoints differ securely across environments.

Question 732

A Fabric developer cannot access Copilot suggestions even though the workspace contains SQL artifacts

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. An authorized workspace member can invoke the supported Copilot feature while an excluded role cannot
  2. A predeployment check flags the unauthorized DROP operation and blocks deployment
  3. The session displays the approved model and request logs show no traffic to disallowed providers
  4. A test assistant can inspect allowed metadata but cannot invoke a data mutation operation

Explanation

Correct Answer

A:

Copilot features depend on administrative eligibility and workspace settings rather than appearing automatically for every user.

Incorrect Answers

B:

Natural-language prompts do not guarantee safe SQL, so explicit statement-level approval protects critical schema.

C:

Model choice affects capability and governance, and prompts must stay within the approved service boundary.

D:

Model Context Protocol tools amplify backend permissions and should be least-privilege for AI workflows.

Question 733

A finance team requests more computations on Always Encrypted columns than ordinary client-side encryption supports

Which SQL design or implementation decision most directly addresses this requirement?

  1. Require encrypted database connections and enforce server certificate validation
  2. Add an appropriate Row-Level Security block predicate for prohibited writes
  3. Evaluate secure enclave-enabled confidential computation only where platform and operation support it
  4. Use a managed identity or approved token-based authentication for the model endpoint

Explanation

Correct Answer

C:

Secure enclaves can permit certain richer operations over encrypted data within an attested protected boundary.

Incorrect Answers

A:

TLS protects data in transit and endpoint verification reduces man-in-the-middle risk.

B:

RLS filter predicates address row visibility while block predicates can stop invalid INSERT/UPDATE operations.

D:

Identity-based model calls reduce secret sprawl and allow endpoint permissions to be scoped and revoked.

Question 734

A document description change should immediately queue an embedding update but OLTP writes must remain fast

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. Database commit latency remains within target and an eventual embedding appears after worker processing
  2. Image-based fixtures and equivalent text fixtures produce usable grounded outputs within budget
  3. Retrieval comparison confirms all indexed vectors were produced by the intended model version
  4. Stored vectors match expected dimensions and request logs show the authorized model deployment

Explanation

Correct Answer

A:

Synchronous network calls in triggers extend transactions and risk blocking; queueing decouples compute.

Incorrect Answers

B:

A text-only model cannot directly process raw images, while multimodal inputs require tested format, cost and safety handling.

C:

Different embedding models or versions need not share vector space; mixing vectors can destroy distance relevance.

D:

Model hosting and batch generation must align on dimensions, security boundaries and quotas.

Question 735

A compliance query must return customers who have any unresolved claims without duplicating customers

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. An account with three matching child rows appears once while accounts without matches are excluded
  2. Every detail row includes its group's expected subtotal and row counts remain unchanged
  3. Good and bad identifier fixtures are classified as expected, including a prefix-only near match
  4. A sample array yields one typed row per element and invalid types are handled as designed

Explanation

Correct Answer

A:

Correlated EXISTS performs an existence test and avoids multiplying outer rows for multiple qualifying matches.

Incorrect Answers

B:

Window aggregates retain detail rows while computing group-level results, unlike GROUP BY which collapses rows.

C:

REGEXP_LIKE evaluates a regex match, including anchors that constrain the whole input rather than just a substring.

D:

OPENJSON shreds objects or arrays into rows and typed columns when a schema is supplied.

Question 736

An existing legacy project uses nonstandard build files and tooling cannot discover SQL project dependencies

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. A deliberately invalid PR is blocked by the relevant test or security rule before merge
  2. The drift report identifies every unexpected object and the team reconciles intended changes before publishing
  3. A PR that references a nonexistent column fails validation and cannot pass the release gate
  4. A containerized CI build produces the same validated database model artifact from a clean clone

Explanation

Correct Answer

D:

SDK-style project definitions simplify consistent tooling and package references while preserving project build semantics.

Incorrect Answers

A:

A successful compiler build is necessary but not sufficient for quality or secure schema changes.

B:

Schema drift is divergence between the target and the model; blind publish may remove legitimate hotfixes.

C:

Compilation catches many missing symbols and invalid references before a DACPAC is deployed.

Question 737

An AI assistant is allowed to propose a data correction but must not silently modify regulated tables

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. Valid responses yield the intended output string and malformed envelopes cause a controlled error
  2. A payload round-trips through a JSON parser with the expected typed properties and no missing fields
  3. A permitted test call reaches the intended model endpoint and response status is handled explicitly
  4. A malicious model response cannot perform a write and only approved validated updates are executed

Explanation

Correct Answer

D:

Model output is untrusted data and must not be treated as authorized executable SQL.

Incorrect Answers

A:

Model APIs return structured envelopes with status and content fields, which must not be forwarded blindly.

B:

Structured JSON preserves named fields and reduces ambiguity compared with ad hoc delimited text.

C:

The stored procedure can call an external REST endpoint under its security/configuration limits; the caller must handle HTTP errors and quotas.

Question 738

A small legal document set requires deterministic exact nearest neighbors without approximate recall loss

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. The index builds on a supported platform and measured recall and latency satisfy requirements
  2. Repeated benchmark runs return the same exact top-K neighbors under the chosen metric
  3. A toy example produces the expected rank-fused order and removes repeated document IDs
  4. A benchmark produces reproducible recall-at-k for the chosen retrieval configuration

Explanation

Correct Answer

B:

Exhaustive nearest-neighbor comparison checks all eligible vectors and provides a recall reference for ANN.

Incorrect Answers

A:

DiskANN is an approximate-neighbor indexing approach, not a substitute for valid model dimensions and authorization.

C:

RRF combines positional rankings and avoids directly adding incompatible score scales.

D:

Answer-generation quality cannot reveal all retrieval failures; ranking metrics provide direct measurement.

Question 739

A GitHub Copilot instructions file gives contradictory advice to avoid transactions while the team requires atomic writes

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. A repository scan finds no plaintext credentials and a test connection still succeeds under approved identity
  2. A review confirms prompts include only approved schema/sample context and no real personal data
  3. An authorized workspace member can invoke the supported Copilot feature while an excluded role cannot
  4. A representative generated procedure passes the project's transaction-and-rollback test cases

Explanation

Correct Answer

D:

Instruction files influence generation but do not guarantee compliance, so contradictions must be removed and checked.

Incorrect Answers

A:

Secrets in repository configuration can be leaked or copied; managed credentials reduce exposure and support rotation.

B:

AI-assisted code generation does not waive data classification, retention and exposure restrictions.

C:

Copilot features depend on administrative eligibility and workspace settings rather than appearing automatically for every user.

Question 740

A search application uses Euclidean distance but stakeholders expect angular cosine similarity

After the team applies the intended design, which observation would most directly verify that the specific requirement was met?

  1. Result sets match both the semantic relevance threshold and the exact date predicate
  2. Valid vectors insert and mismatched-dimension input is rejected with a clear error
  3. The indexed search meets recall-at-k and latency requirements on representative queries
  4. Labeled ranking fixtures confirm the chosen metric produces intended neighbors

Explanation

Correct Answer

D:

Cosine, Euclidean and dot-product measures are not universally interchangeable unless normalization assumptions hold.

Incorrect Answers

A:

Semantic relevance does not replace mandatory structured filters such as date, category or tenant.

B:

SQL vector storage enforces or expects a known dimension and model compatibility for meaningful distance calculations.

C:

Indexed vector search can avoid an exhaustive scan at the cost of approximate recall and feature constraints.

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

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