DP-800 Premium File
- 101 Questions & Answers
- Last Update: Nov 12, 2026
An ingest job fails because model output length does not match the VECTOR column definition
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
A fixed-dimensional vector column cannot store embeddings of an incompatible dimension without schema or model changes.
Structured-output mode can reduce free-form variability but application-side validation remains required.
CDC captures historical change records from the log, unlike key-only change tracking.
Vector similarity does not enforce authorization; retrieval still needs tenant/ACL filters.
A semantic feature's p95 latency grows linearly as the embedding table expands
Which SQL design or implementation decision most directly addresses this requirement?
ANN index retrieval can reduce full-scan cost if accuracy requirements permit, while brute-force evaluation remains a reference.
Vector properties help validate dimensions and related characteristics before comparison or indexing.
Full-text indexing supports token-oriented search and ranking beyond simple substring scans.
DiskANN is an approximate-neighbor indexing approach, not a substitute for valid model dimensions and authorization.
A compliance-sensitive database must deploy only after approved staging test results
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
CI can build frequently while CD must respect protected environments, approvals and test conditions.
A successful compiler build is necessary but not sufficient for quality or secure schema changes.
A DACPAC packages the declarative database model used by supported deployment tools.
Federated OIDC authentication limits reusable secret material while retaining policy-controlled authorization.
Security investigators need an independent record of who attempted privileged schema changes
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Auditing generates event evidence of SQL activity but must be configured for relevant actions and protected storage.
A DENY generally overrides an inherited GRANT for an ordinary user; exceptional cases require explicit security review.
Always Encrypted keeps sensitive column values inaccessible to parties lacking client-side keys, unlike server-only encryption at rest.
Managed identity supplies short-lived identity-based credentials without a long-lived application password.
A developer must switch model deployment for a session without disclosing data to an unapproved endpoint
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Model choice affects capability and governance, and prompts must stay within the approved service boundary.
AI-tool access should follow user authorization and workspace boundaries rather than tool availability alone.
License and repository settings enable assistance while source and secret access boundaries remain separate controls.
AI-generated rewrites can silently alter authorization or semantics even if syntactically valid.
A repository needs stricter reviews for SQL encryption and RLS policy changes
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Policy-enforced reviews prevent bypassing designated security and database approvers.
A successful compiler build is necessary but not sufficient for quality or secure schema changes.
Compilation catches many missing symbols and invalid references before a DACPAC is deployed.
Unmanaged production modifications can be overwritten unless intentionally captured in source control.
A language model's HTTP response is JSON but a SQL procedure treats the entire response as final user text
Which SQL design or implementation decision most directly addresses this requirement?
Model APIs return structured envelopes with status and content fields, which must not be forwarded blindly.
LLMs are not authoritative for arithmetic or source-of-truth values; database computations should remain deterministic.
Source metadata supports provenance checks and keeps generated statements linked to authorized records.
External network latency inside a transaction prolongs locks and increases deadlock and timeout exposure.
A support chatbot must retrieve similar explanations despite different phrasing and synonyms
Which SQL design or implementation decision most directly addresses this requirement?
Vector similarity can match related meaning beyond exact token overlap if embedding quality is adequate.
Semantic relevance does not replace mandatory structured filters such as date, category or tenant.
Index membership can make data discoverable; search permission cannot be inferred from index design.
Index freshness includes removal as well as addition and edits; stale documents can yield harmful answers.
A developer grants db_datareader to an API merely so it can call one business workflow
Which SQL design or implementation decision most directly addresses this requirement?
Object-level permissions enable task-specific capability without broad exposure to every table.
Managed identity supplies short-lived identity-based credentials without a long-lived application password.
Overprivileged built-in roles broaden the blast radius of compromises and accidental statements.
Deterministic encryption enables equality comparisons for matching plaintexts but reveals equality patterns and is less private than randomized encryption.
A search service wants a normalized similarity score rather than an unbounded edit count
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Normalized edit similarity can be easier to compare across lengths than raw edit operations, though thresholds must be tuned.
DENSE_RANK retains equal ranks for ties while the next distinct value advances by one.
LEAD returns a later row in an ordered window and avoids complicated self-joins.
A nonrecursive CTE names a logical result within one statement and does not inherently materialize persistent storage.
A backend service connects to Azure SQL using a password embedded in a configuration file
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Managed identity supplies short-lived identity-based credentials without a long-lived application password.
TLS protects data in transit and endpoint verification reduces man-in-the-middle risk.
Endpoint convenience does not replace user authentication and data access enforcement in API and SQL layers.
Server-side column encryption is different from Always Encrypted: the engine may decrypt for authorized server operations.
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