Microsoft DP-800 Questions & Answers

Pre-create boundaries and monitor data skew. The current task instead requires this action: use transactional change control and rehearse rollback.

Keep precision/scale decisions in schema review and financial regression tests.

Avoid replacing lookup-heavy OLTP rowstore access without workload tests. The current task instead requires this action: use transactional change control and rehearse rollback.

Window ranking order is defined by its OVER clause, not the outer result sort.

Jaro-Winkler-style measures can treat transpositions and prefixes differently from raw edits.

A path existence predicate does not necessarily compute minimal hop count.

A concurrent workload no longer produces avoidable deadlock victims. However, that result would not establish the required outcome: batch tests preserve atomic business requirements with lower p95 waits.

A peak replay meets throughput and latency targets within budget. However, that result would not establish the required outcome: batch tests preserve atomic business requirements with lower p95 waits.

Simultaneous sale tests yield at most the available stock quantity. However, that result would not establish the required outcome: batch tests preserve atomic business requirements with lower p95 waits.

Data minimization reduces prompt exposure and cost without losing relevant context. The actual technical constraint is that structured JSON preserves field boundaries and escaping for downstream model prompts.

The stored procedure enables outbound HTTP but requires correct permissions, endpoint reachability and payload formatting. The actual technical constraint is that structured JSON preserves field boundaries and escaping for downstream model prompts.

Numeric reconciliation is a structured calculation, not a reason to hallucinate an answer from documents. The actual technical constraint is that structured JSON preserves field boundaries and escaping for downstream model prompts.

Use explicit retry or user merge flow on conflicts. The current task instead requires this action: document isolation assumptions in critical transaction code.

Keep transactions short and test snapshot version-store impact. The current task instead requires this action: document isolation assumptions in critical transaction code.

Alert on sustained blockers and uncommitted transactions. The current task instead requires this action: document isolation assumptions in critical transaction code.

Approximate structures trade memory, speed and recall depending on data and configuration.

Using RRF to reward documents ranking highly across multiple candidate lists would not correct a team chooses an ANN index solely by query latency without checking write costs. Compare index build time, insert cost, storage and recall alongside query latency.

RRF operates on list positions and is distinct from raw score interpolation.

Suppliers with no invoice are returned correctly with null-containing test data. However, that result would not establish the required outcome: an item is flagged only when above its own category average.

Injected errors leave balances unchanged and propagate a useful error. However, that result would not establish the required outcome: an item is flagged only when above its own category average.

Labeled positive/negative pairs meet acceptable precision and recall. However, that result would not establish the required outcome: an item is flagged only when above its own category average.

DAB can surface declared stored procedures without granting arbitrary query execution. The actual technical constraint is that mapping a view can create a governed projection with narrower permissions than base tables.

Configuration must resolve the correct database per environment without leaking secrets. The actual technical constraint is that mapping a view can create a governed projection with narrower permissions than base tables.

API endpoint changes can break consumers even if the underlying database remains healthy. The actual technical constraint is that mapping a view can create a governed projection with narrower permissions than base tables.

Enforce ownership and governance over graph writes. The current task instead requires this action: guard against cyclic paths and unsupported graph features.

Use XACT_STATE appropriately before commit or rollback. The current task instead requires this action: guard against cyclic paths and unsupported graph features.

Record retry policy and distinguish transient from permanent errors. The current task instead requires this action: guard against cyclic paths and unsupported graph features.

FREETEXT expands linguistic meaning and is not equivalent to exact phrase matching.

Embedding similarity can confuse near-looking product codes that must match exactly.

Native vector types validate dimensions and avoid repeated parsing of text arrays.

A point-in-time query returns the former invoice values after an update. However, that result would not establish the required outcome: verification detects a controlled tampering attempt against the ledger history.

Sample records validate JSON paths while required keys remain enforced. However, that result would not establish the required outcome: verification detects a controlled tampering attempt against the ledger history.

Concurrent inserts receive nonconflicting sequence-generated identifiers. However, that result would not establish the required outcome: verification detects a controlled tampering attempt against the ledger history.