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Databricks Certified Data Engineer Associate Practice Test 76

Question 750

At Satellite imagery startup, the task value passing workflow handles land-cover observations. The problem is that land_cover_observations_highland validation notebook computes the partition date but downstream tasks use yesterday by default. Evidence: logs show successful validation for one date and export for another. Constraint: the exported partition must match the validated partition. The failure and requirements have been diagnosed; the team must select the lasting pipeline or governance approach. What governed target implementation should the engineer design?

  1. Pass a validated task value to the dependent export task
  2. Inspect taskValues producer, dependency and dynamic reference in land_cover_observations_highland
  3. Monitor missing task values and inconsistent task parameters for land_cover_observations_highland
  4. Hardcode yesterday in every downstream task at Satellite imagery startup

Explanation

Correct Answer

A:

Pass a validated task value to the dependent export task is the intended durable approach for land_cover_observations_highland: it addresses the verified problem (land_cover_observations_highland validation notebook computes the partition date but downstream tasks use yesterday by default) while preserving the required behavior (the exported partition must match the validated partition). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

B:

Inspect taskValues producer, dependency and dynamic reference in land_cover_observations_highland could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The land_cover_observations_highland workflow still requires that the exported partition must match the validated partition.

C:

Monitor missing task values and inconsistent task parameters for land_cover_observations_highland would help detect future recurrence, but metrics alone do not deliver the target approach. The land_cover_observations_highland requirement is that the exported partition must match the validated partition.

D:

Hardcoded dates can diverge from validated data. The proposed action (Hardcode yesterday in every downstream task at Satellite imagery startup) does not meet the requirement that the exported partition must match the validated partition, nor does it constitute the target approach.

Question 751

At University research consortium, the experiment records workflow depends on experiment_records_metro. Engineers report that the experiment_records_metro partner API returns 100 rows per page but the batch stores only the first page; the evidence is that response metadata includes a next cursor that the client ignores. They require that all authorized records must be imported without exceeding API limits. The first acceptance run passed. The current task is to detect future regressions and changes over time. Which ongoing alert or metric is most relevant?

  1. Monitor page completeness, retries and expired cursors for experiment_records_metro
  2. Stop after one successful HTTP 200 response at University research consortium
  3. Implement cursor pagination with bounded retries and idempotent destination keys
  4. Compare source advertised total and destination distinct IDs after a full pull

Explanation

Correct Answer

A:

Monitor page completeness, retries and expired cursors for experiment_records_metro creates recurring visibility into the failure mode (the experiment_records_metro partner API returns 100 rows per page but the batch stores only the first page). Unlike a single successful test, the measure can reveal drift, lag, or new failures after later source and deployment changes while all authorized records must be imported without exceeding API limits.

Incorrect Answers

B:

A successful first page does not establish completeness. The proposed action (Stop after one successful HTTP 200 response at University research consortium) does not meet the requirement that all authorized records must be imported without exceeding API limits, nor does it constitute continuing operational detection.

C:

Implement cursor pagination with bounded retries and idempotent destination keys is a plausible lasting design once chosen, but it does not perform continuing operational detection at this stage. In the experiment_records_metro scenario, the observed evidence is that response metadata includes a next cursor that the client ignores; the requirement remains: all authorized records must be imported without exceeding API limits.

D:

Compare source advertised total and destination distinct IDs after a full pull is a one-time acceptance check. It does not supply continuing operational detection for experiment_records_metro; a passing test cannot substitute for the specific task now required.

Question 752

At Public weather agency, the pipeline task invocation workflow handles station observation files. The problem is that station_observation_files_island Spark Declarative Pipeline is managed separately and not part of the daily job. Evidence: analytics runs before the pipeline produces its updated streaming table. Constraint: job orchestration must wait for pipeline update completion. The failure and requirements have been diagnosed; the team must select the lasting pipeline or governance approach. What governed target implementation should the engineer design?

  1. Monitor pipeline update failures and downstream task skips for station_observation_files_island
  2. Inspect pipeline identity, job task settings and downstream dependencies for station_observation_files_island
  3. Use a Lakeflow pipeline task with success dependency before analytics tasks
  4. Assume the pipeline auto-refreshes before every dashboard query at Public weather agency

Explanation

Correct Answer

C:

Use a Lakeflow pipeline task with success dependency before analytics tasks is the intended durable approach for station_observation_files_island: it addresses the verified problem (station_observation_files_island Spark Declarative Pipeline is managed separately and not part of the daily job) while preserving the required behavior (job orchestration must wait for pipeline update completion). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Monitor pipeline update failures and downstream task skips for station_observation_files_island would help detect future recurrence, but metrics alone do not deliver the target approach. The station_observation_files_island requirement is that job orchestration must wait for pipeline update completion.

B:

Inspect pipeline identity, job task settings and downstream dependencies for station_observation_files_island could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The station_observation_files_island workflow still requires that job orchestration must wait for pipeline update completion.

D:

Uncontrolled refresh timing does not guarantee dependency order. The proposed action (Assume the pipeline auto-refreshes before every dashboard query at Public weather agency) does not meet the requirement that job orchestration must wait for pipeline update completion, nor does it constitute the target approach.

Question 753

At Urban housing fund, the batch versus streaming SLA workflow handles rental subsidy payments. The problem is that the rental_subsidy_payments_highland telemetry producer emits events every few seconds but dashboards only need daily totals. Evidence: profiling shows expensive continuous compute for an overnight business report. Constraint: ingestion frequency should reflect true freshness requirements and cost. The failure and requirements have been diagnosed; the team must select the lasting pipeline or governance approach. What governed target implementation should the engineer design?

  1. Force continuous high-cost processing solely because the source emits events frequently at Urban housing fund
  2. Confirm actual consumer latency requirements and event volume for rental_subsidy_payments_highland
  3. Choose scheduled incremental batch when a daily SLA does not warrant continuous processing
  4. Monitor SLA misses and idle compute cost for rental_subsidy_payments_highland

Explanation

Correct Answer

C:

Choose scheduled incremental batch when a daily SLA does not warrant continuous processing is the intended durable approach for rental_subsidy_payments_highland: it addresses the verified problem (the rental_subsidy_payments_highland telemetry producer emits events every few seconds but dashboards only need daily totals) while preserving the required behavior (ingestion frequency should reflect true freshness requirements and cost). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Source frequency alone does not justify a continuous target pipeline. The proposed action (Force continuous high-cost processing solely because the source emits events frequently at Urban housing fund) does not meet the requirement that ingestion frequency should reflect true freshness requirements and cost, nor does it constitute the target approach.

B:

Confirm actual consumer latency requirements and event volume for rental_subsidy_payments_highland could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The rental_subsidy_payments_highland workflow still requires that ingestion frequency should reflect true freshness requirements and cost.

D:

Monitor SLA misses and idle compute cost for rental_subsidy_payments_highland would help detect future recurrence, but metrics alone do not deliver the target approach. The rental_subsidy_payments_highland requirement is that ingestion frequency should reflect true freshness requirements and cost.

Question 754

At Port customs authority, the border inspection results workflow depends on border_inspection_results_rural. Engineers report that the border_inspection_results_rural telemetry producer emits events every few seconds but dashboards only need daily totals; the evidence is that profiling shows expensive continuous compute for an overnight business report. They require that ingestion frequency should reflect true freshness requirements and cost. The new approach is deployed. The current task is to prove correct output and authorized behavior, not just successful installation. Which post-change acceptance check is strongest?

  1. Confirm actual consumer latency requirements and event volume for border_inspection_results_rural
  2. Force continuous high-cost processing solely because the source emits events frequently at Port customs authority
  3. Switch one report to a scheduled ingest with measured completeness
  4. Verify next-morning output and source-to-target reconciliation

Explanation

Correct Answer

D:

Verify next-morning output and source-to-target reconciliation directly tests the behavior that should change following the correction. With the observed evidence (profiling shows expensive continuous compute for an overnight business report), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that ingestion frequency should reflect true freshness requirements and cost.

Incorrect Answers

A:

Confirm actual consumer latency requirements and event volume for border_inspection_results_rural could clarify the original fault, but the available evidence already establishes its scope; it is not the post-change acceptance test now requested. The border_inspection_results_rural workflow still requires that ingestion frequency should reflect true freshness requirements and cost.

B:

Source frequency alone does not justify a continuous target pipeline. The proposed action (Force continuous high-cost processing solely because the source emits events frequently at Port customs authority) does not meet the requirement that ingestion frequency should reflect true freshness requirements and cost, nor does it constitute the post-change acceptance test.

C:

Switch one report to a scheduled ingest with measured completeness may introduce a correction, but the question does not ask for installation or migration. A rollout alone cannot replace the post-change acceptance test, especially given the evidence that profiling shows expensive continuous compute for an overnight business report. Here, the relevant situation is: the border inspection results workflow depends on border_inspection_results_rural. Engineers report that the….

Question 755

At National heritage library, the source method selection workflow handles digitization inventories. The problem is that the digitization_inventories_south producer is a managed enterprise database but engineers plan a custom nightly file scraper. Evidence: evaluation finds supported managed CDC connector and tight freshness targets. Constraint: data must reach Unity Catalog with near-real-time change capture. The new approach is deployed. The current task is to prove correct output and authorized behavior, not just successful installation. Which test should pass before the new flow is accepted?

  1. Update and delete source rows and validate resulting Delta state
  2. Pilot managed CDC for a bounded table before removing the nightly export
  3. Use monthly manual CSV downloads for a near-real-time feed at National heritage library
  4. Compare connector support, freshness SLA, cost and source load for digitization_inventories_south

Explanation

Correct Answer

A:

Update and delete source rows and validate resulting Delta state directly tests the behavior that should change following the correction. With the observed evidence (evaluation finds supported managed CDC connector and tight freshness targets), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that data must reach Unity Catalog with near-real-time change capture.

Incorrect Answers

B:

Pilot managed CDC for a bounded table before removing the nightly export may introduce a correction, but the question does not ask for installation or migration. A rollout alone cannot replace the post-change acceptance test, especially given the evidence that evaluation finds supported managed CDC connector and tight freshness targets. Here, the relevant situation is: the source method selection workflow handles digitization inventories. The problem is that the….

C:

Manual batch exports cannot meet continuous change freshness. The proposed action (Use monthly manual CSV downloads for a near-real-time feed at National heritage library) does not meet the requirement that data must reach Unity Catalog with near-real-time change capture, nor does it constitute the post-change acceptance test.

D:

Compare connector support, freshness SLA, cost and source load for digitization_inventories_south could clarify the original fault, but the available evidence already establishes its scope; it is not the post-change acceptance test now requested. The digitization_inventories_south workflow still requires that data must reach Unity Catalog with near-real-time change capture.

Question 756

At Regional museum alliance, the MERGE key update workflow handles artifact metadata updates. The problem is that artifact_metadata_updates_metro delta target must apply corrected invoice amounts from an incremental feed. Evidence: the source has two updates for the same invoice_id in one batch. Constraint: target must have one latest value per invoice after applying ordered changes. The target approach is approved. The current task is to introduce it safely with bounded scope and rollback. Which change can be introduced with minimal production risk?

  1. Verify one current row per ID and updated values after retries
  2. Use Delta MERGE with a deduplicated source on invoice_id and matched update logic
  3. Test MERGE on a small target and rerun an identical source batch
  4. MERGE with multiple unfiltered source matches per target key at Regional museum alliance

Explanation

Correct Answer

C:

Test MERGE on a small target and rerun an identical source batch provides a bounded way to introduce the approved solution into artifact_metadata_updates_metro and detect an early mismatch. The existing signal is the source has two updates for the same invoice_id in one batch; a staged change protects the service requirement (target must have one latest value per invoice after applying ordered changes) and makes rollback practical.

Incorrect Answers

A:

Verify one current row per ID and updated values after retries is a one-time acceptance check. It does not supply the controlled implementation step for artifact_metadata_updates_metro; a passing test cannot substitute for the specific task now required.

B:

Use Delta MERGE with a deduplicated source on invoice_id and matched update logic is a plausible lasting design once chosen, but it does not perform the controlled implementation step at this stage. In the artifact_metadata_updates_metro scenario, the observed evidence is that the source has two updates for the same invoice_id in one batch; the requirement remains: target must have one latest value per invoice after applying ordered changes.

D:

Ambiguous multiple source matches can make updates nondeterministic or fail. The proposed action (MERGE with multiple unfiltered source matches per target key at Regional museum alliance) does not meet the requirement that target must have one latest value per invoice after applying ordered changes, nor does it constitute the controlled implementation step.

Question 757

At Wholesale produce exchange, the trade settlement files workflow depends on trade_settlement_files_delta. Engineers report that trade_settlement_files_delta production job UI was manually edited after bundle deployment; the evidence is that resolved job settings differ from the versioned bundle manifest. They require that releases must remain traceable to approved Git changes. The team has not selected a remedy. It first needs evidence that distinguishes the actual dependency or data fault. Which pre-change diagnostic will resolve the uncertainty?

  1. Compare actual resource definitions with deployed bundle target and source commit for trade_settlement_files_delta
  2. Reapply the approved bundle after controlled review of production-only changes
  3. Update the source by copying random current production settings without review at Wholesale produce exchange
  4. Treat the versioned bundle as the source of truth and prohibit unreviewed manual drift

Explanation

Correct Answer

A:

Compare actual resource definitions with deployed bundle target and source commit for trade_settlement_files_delta directly investigates the evidence (resolved job settings differ from the versioned bundle manifest) and distinguishes possible causes of trade_settlement_files_delta production job UI was manually edited after bundle deployment. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: releases must remain traceable to approved Git changes.

Incorrect Answers

B:

Reapply the approved bundle after controlled review of production-only changes may introduce a correction, but the question does not ask for installation or migration. A rollout alone cannot replace the required pre-change investigation, especially given the evidence that resolved job settings differ from the versioned bundle manifest. Here, the relevant situation is: the trade settlement files workflow depends on trade_settlement_files_delta. Engineers report that….

C:

Unreviewed drift can be promoted into every environment. The proposed action (Update the source by copying random current production settings without review at Wholesale produce exchange) does not meet the requirement that releases must remain traceable to approved Git changes, nor does it constitute the required pre-change investigation.

D:

Treat the versioned bundle as the source of truth and prohibit unreviewed manual drift is a plausible lasting design once chosen, but it does not perform the required pre-change investigation at this stage. In the trade_settlement_files_delta scenario, the observed evidence is that resolved job settings differ from the versioned bundle manifest; the requirement remains: releases must remain traceable to approved Git changes.

Question 758

Consider the station_observation_files_east workload at Public weather agency: station_observation_files_east Delta queries slow after the filter distribution changes. Inspection found that query profile shows increased file scanning despite healthy worker utilization. The governed outcome must ensure that performance optimization must adapt to predicate patterns. The failure and requirements have been diagnosed; the team must select the lasting pipeline or governance approach. Which data-engineering approach resolves the documented weakness?

  1. Add a new physical partition for every possible filter value at Public weather agency
  2. Choose suitable liquid clustering keys and supported optimization maintenance
  3. Inspect clustering columns and actual filter patterns for station_observation_files_east
  4. Monitor scan-to-result ratio and clustering upkeep for station_observation_files_east

Explanation

Correct Answer

B:

Choose suitable liquid clustering keys and supported optimization maintenance is the intended durable approach for station_observation_files_east: it addresses the verified problem (station_observation_files_east Delta queries slow after the filter distribution changes) while preserving the required behavior (performance optimization must adapt to predicate patterns). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Extreme partitioning creates metadata overhead. The proposed action (Add a new physical partition for every possible filter value at Public weather agency) does not meet the requirement that performance optimization must adapt to predicate patterns, nor does it constitute the target approach.

C:

Inspect clustering columns and actual filter patterns for station_observation_files_east could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The station_observation_files_east workflow still requires that performance optimization must adapt to predicate patterns.

D:

Monitor scan-to-result ratio and clustering upkeep for station_observation_files_east would help detect future recurrence, but metrics alone do not deliver the target approach. The station_observation_files_east requirement is that performance optimization must adapt to predicate patterns.

Question 759

Consider the appointment_requests_coastal workload at Pet-care booking platform: appointment_requests_coastal job duration doubles after a code release but task status is green. Inspection found that run history shows a persistent trend from 12 to 30 minutes. The governed outcome must ensure that operations must distinguish performance regressions from random short spikes. The new approach is deployed. The current task is to prove correct output and authorized behavior, not just successful installation. How should the team verify the original fault has been addressed?

  1. Add duration alerts and annotate the release time on job history
  2. Reprocess a representative input and compare stage timings to baseline
  3. Rely on green status alone and ignore duration changes at Pet-care booking platform
  4. Compare run-history duration across identical appointment_requests_coastal input sizes and revisions

Explanation

Correct Answer

B:

Reprocess a representative input and compare stage timings to baseline directly tests the behavior that should change following the correction. With the observed evidence (run history shows a persistent trend from 12 to 30 minutes), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that operations must distinguish performance regressions from random short spikes.

Incorrect Answers

A:

Add duration alerts and annotate the release time on job history may introduce a correction, but the question does not ask for installation or migration. A rollout alone cannot replace the post-change acceptance test, especially given the evidence that run history shows a persistent trend from 12 to 30 minutes. This matters here because consider the appointment_requests_coastal workload at Pet-care booking platform: appointment_requests_coastal job….

C:

Successful completion does not imply healthy latency. The proposed action (Rely on green status alone and ignore duration changes at Pet-care booking platform) does not meet the requirement that operations must distinguish performance regressions from random short spikes, nor does it constitute the post-change acceptance test.

D:

Compare run-history duration across identical appointment_requests_coastal input sizes and revisions could clarify the original fault, but the available evidence already establishes its scope; it is not the post-change acceptance test now requested. The appointment_requests_coastal workflow still requires that operations must distinguish performance regressions from random short spikes.

Question 760

Consider the admission_scan_events_north workload at Regional sporting venue: admission_scan_events_north table exposes national IDs to analysts who need only transaction amounts. Inspection found that query review shows raw identifier values in common reports. The governed outcome must ensure that users without an approved role must see masked sensitive columns. The first acceptance run passed. The current task is to detect future regressions and changes over time. Which continuing signal best reveals recurrence or drift?

  1. Rename identifier column to a harmless label while leaving values visible at Regional sporting venue
  2. Query the same column as privileged and unprivileged groups
  3. Apply Unity Catalog column masks or suitable centrally governed masking policy
  4. Monitor new PII columns, mask failures and unapproved policy changes for admission_scan_events_north

Explanation

Correct Answer

D:

Monitor new PII columns, mask failures and unapproved policy changes for admission_scan_events_north creates recurring visibility into the failure mode (admission_scan_events_north table exposes national IDs to analysts who need only transaction amounts). Unlike a single successful test, the measure can reveal drift, lag, or new failures after later source and deployment changes while users without an approved role must see masked sensitive columns.

Incorrect Answers

A:

Renaming a column does not protect its contents. The proposed action (Rename identifier column to a harmless label while leaving values visible at Regional sporting venue) does not meet the requirement that users without an approved role must see masked sensitive columns, nor does it constitute continuing operational detection.

B:

Query the same column as privileged and unprivileged groups is a one-time acceptance check. It does not supply continuing operational detection for admission_scan_events_north; a passing test cannot substitute for the specific task now required.

C:

Apply Unity Catalog column masks or suitable centrally governed masking policy is a plausible lasting design once chosen, but it does not perform continuing operational detection at this stage. In the admission_scan_events_north scenario, the observed evidence is that query review shows raw identifier values in common reports; the requirement remains: users without an approved role must see masked sensitive columns.

Certified Data Engineer Associate Practice Tests