cert
cert-1
cert-2

Pass Databricks Certified Data Engineer Associate Exam in First Attempt Guaranteed!

Get 100% Latest Exam Questions, Accurate & Verified Answers to Pass the Actual Exam!
30 Days Free Updates, Instant Download!

cert-5
cert-6
Certified Data Engineer Associate Exam - Verified By Experts
Certified Data Engineer Associate Premium Bundle
$29.98

Certified Data Engineer Associate Premium Bundle

$79.99
$109.97
  • Premium File 280 Questions & Answers. Last update: Nov 02, 2026
  • Training Course 38 Video Lectures
  • Study Guide 432 Pages
 
$109.97
$79.99
accept 143 downloads in last 7 days
block-screenshots
Purchase Databricks Certified Data Engineer Associate Exam Training Products Individually
Databricks Certified Data Engineer Associate Premium File
Premium File 280 Q&A
$76.99$69.99
Databricks Certified Data Engineer Associate Video Training Course
Training Course 38 Lectures
$21.99 $19.99
Databricks Certified Data Engineer Associate PDF Study Guide
Study Guide 432 Pages
$21.99 $19.99
Databricks Certified Data Engineer Associate Practice Test 36

Question 350

At Cloud gaming cooperative, the match-session events workflow depends on match_session_events_urban. Engineers report that the match_session_events_urban 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 target approach is approved. The current task is to introduce it safely with bounded scope and rollback. Which controlled implementation step is appropriate now?

  1. Compare source advertised total and destination distinct IDs after a full pull
  2. Test pagination on a multi-page source with backoff for HTTP 429
  3. Implement cursor pagination with bounded retries and idempotent destination keys
  4. Stop after one successful HTTP 200 response at Cloud gaming cooperative

Explanation

Correct Answer

B:

Test pagination on a multi-page source with backoff for HTTP 429 provides a bounded way to introduce the approved solution into match_session_events_urban and detect an early mismatch. The existing signal is response metadata includes a next cursor that the client ignores; a staged change protects the service requirement (all authorized records must be imported without exceeding API limits) and makes rollback practical.

Incorrect Answers

A:

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

C:

Implement cursor pagination with bounded retries and idempotent destination keys is a plausible lasting design once chosen, but it does not perform the controlled implementation step at this stage. In the match_session_events_urban 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:

A successful first page does not establish completeness. The proposed action (Stop after one successful HTTP 200 response at Cloud gaming cooperative) does not meet the requirement that all authorized records must be imported without exceeding API limits, nor does it constitute the controlled implementation step.

Question 351

The subscriber_provisioning_logs_delta pipeline at Regional telecom operator has this failure: a subscriber_provisioning_logs_delta DataFrame operation unexpectedly produces billions of rows. The team observed that the plan shows a cartesian product between two unrelated inputs. Business requirement: records should match on explicit business keys without multiplying every pair. The new approach is deployed. The current task is to prove correct output and authorized behavior, not just successful installation. What test most directly proves the requirement is satisfied?

  1. Inspect join expressions, row estimates and missing join predicates for subscriber_provisioning_logs_delta
  2. Verify every output row matches the intended keys with bounded cardinality
  3. Replace the accidental Cartesian step and run count parity tests
  4. Leave the cross join in place because adding workers makes it semantically correct at Regional telecom operator

Explanation

Correct Answer

B:

Verify every output row matches the intended keys with bounded cardinality directly tests the behavior that should change following the correction. With the observed evidence (the plan shows a cartesian product between two unrelated inputs), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that records should match on explicit business keys without multiplying every pair.

Incorrect Answers

A:

Inspect join expressions, row estimates and missing join predicates for subscriber_provisioning_logs_delta could clarify the original fault, but the available evidence already establishes its scope; it is not the post-change acceptance test now requested. The subscriber_provisioning_logs_delta workflow still requires that records should match on explicit business keys without multiplying every pair.

C:

Replace the accidental Cartesian step and run count parity tests 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 the plan shows a cartesian product between two unrelated inputs. This matters here because the subscriber_provisioning_logs_delta pipeline at Regional telecom operator has this failure: a….

D:

Scaling cannot repair invalid join semantics. The proposed action (Leave the cross join in place because adding workers makes it semantically correct at Regional telecom operator) does not meet the requirement that records should match on explicit business keys without multiplying every pair, nor does it constitute the post-change acceptance test.

Question 352

The viewer_activity_data_south pipeline at Subscription video network has this failure: the viewer_activity_data_south CSV feed has unrecognized optional columns and the ingest silently discards them. The team observed that raw samples show new attributes that do not appear in the bronze output. Business requirement: unknown values must remain auditable even before mapping is approved. The failure and requirements have been diagnosed; the team must select the lasting pipeline or governance approach. What lasting solution should be selected for the verified conditions?

  1. Compare incoming headers with inferred schema and rescued fields for viewer_activity_data_south
  2. Monitor rescued-data frequency and schema evolution approvals for viewer_activity_data_south
  3. Overwrite source files after dropping all unrecognized fields at Subscription video network
  4. Retain unexpected fields in a rescued-data column or quarantined bronze path

Explanation

Correct Answer

D:

Retain unexpected fields in a rescued-data column or quarantined bronze path is the intended durable approach for viewer_activity_data_south: it addresses the verified problem (the viewer_activity_data_south CSV feed has unrecognized optional columns and the ingest silently discards them) while preserving the required behavior (unknown values must remain auditable even before mapping is approved). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Compare incoming headers with inferred schema and rescued fields for viewer_activity_data_south could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The viewer_activity_data_south workflow still requires that unknown values must remain auditable even before mapping is approved.

B:

Monitor rescued-data frequency and schema evolution approvals for viewer_activity_data_south would help detect future recurrence, but metrics alone do not deliver the target approach. The viewer_activity_data_south requirement is that unknown values must remain auditable even before mapping is approved.

C:

Discarded raw fields cannot be reconstructed during audit. The proposed action (Overwrite source files after dropping all unrecognized fields at Subscription video network) does not meet the requirement that unknown values must remain auditable even before mapping is approved, nor does it constitute the target approach.

Question 353

Consider the trade_settlement_files_metro workload at Wholesale produce exchange: an interactive notebook cluster runs trade_settlement_files_metro every minute even when analysts are offline. Inspection found that billing shows idle all-purpose compute for a deterministic scheduled transformation. The governed outcome must ensure that the pipeline needs reproducible cost-controlled scheduled runs. 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. Verify scheduled execution succeeds and compute releases after the run
  2. Migrate a limited workload to an automated job on the chosen compute
  3. Resize the interactive cluster to its maximum size and keep it on overnight at Wholesale produce exchange
  4. Compare time of execution, compute utilization and job latency for trade_settlement_files_metro

Explanation

Correct Answer

A:

Verify scheduled execution succeeds and compute releases after the run directly tests the behavior that should change after the correction. With the observed evidence (billing shows idle all-purpose compute for a deterministic scheduled transformation), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that the pipeline needs reproducible cost-controlled scheduled runs.

Incorrect Answers

B:

Migrate a limited workload to an automated job on the chosen compute 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 billing shows idle all-purpose compute for a deterministic scheduled transformation.

C:

Larger always-on interactive compute increases waste without fixing scheduling. The proposed action (Resize the interactive cluster to its maximum size and keep it on overnight at Wholesale produce exchange) does not meet the requirement that the pipeline needs reproducible cost-controlled scheduled runs, nor does it constitute the post-change acceptance test.

D:

Compare time of execution, compute utilization and job latency for trade_settlement_files_metro could clarify the original fault, but the available evidence already establishes its scope; it is not the post-change acceptance test now requested. The trade_settlement_files_metro workflow still requires that the pipeline needs reproducible cost-controlled scheduled runs.

Question 354

A data engineer at Aquaculture farming group is responsible for water-quality readings. The UC volume file loading issue is that the water_quality_readings_island import stores files in personal workspace paths inaccessible to scheduled service principals. The supporting evidence is that a job run fails to read a path that works under one engineer's user session. The engineer must ensure that source files must be reachable through governed identity and stable cloud storage. The team has not selected a remedy. It first needs evidence that distinguishes the actual dependency or data fault. What analysis is necessary before deciding on remediation?

  1. Inspect storage location, Unity Catalog volume grants and job run-as permissions for water_quality_readings_island
  2. Land files in a permitted external or managed Unity Catalog volume
  3. Embed a personal access token and home-directory file path in production code at Aquaculture farming group
  4. Migrate input to a governed volume and reconfigure the job's scoped path

Explanation

Correct Answer

A:

Inspect storage location, Unity Catalog volume grants and job run-as permissions for water_quality_readings_island directly investigates the evidence (a job run fails to read a path that works under one engineer's user session) and distinguishes possible causes of the water_quality_readings_island import stores files in personal workspace paths inaccessible to scheduled service principals. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: source files must be reachable through governed identity and stable cloud storage.

Incorrect Answers

B:

Land files in a permitted external or managed Unity Catalog volume is a plausible lasting design once chosen, but it does not perform the required pre-change investigation at this stage. In the water_quality_readings_island scenario, the observed evidence is that a job run fails to read a path that works under one engineer's user session; the requirement remains: source files must be reachable through governed identity and stable cloud storage.

C:

Personal paths and identities do not provide durable service access. The proposed action (Embed a personal access token and home-directory file path in production code at Aquaculture farming group) does not meet the requirement that source files must be reachable through governed identity and stable cloud storage, nor does it constitute the required pre-change investigation.

D:

Migrate input to a governed volume and reconfigure the job's scoped path 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 a job run fails to read a path that works under one engineer's user session.

Question 355

At Multi-region rental platform, the Auto Loader checkpoint workflow handles property reservation updates. The problem is that a streaming file reader for property_reservation_updates_highland reprocesses historical data after every job restart. Evidence: the streaming query creates a new checkpoint directory on each run. Constraint: a restart must resume discovered files instead of replaying all existing input. 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. Delete checkpoint state as part of each successful load at Multi-region rental platform
  2. Inspect checkpoint continuity, discovery progress and input file identifiers
  3. Monitor checkpoint accessibility and unexpected replay volume for property_reservation_updates_highland
  4. Configure cloudFiles with a stable checkpoint path for the property_reservation_updates_highland stream

Explanation

Correct Answer

D:

Configure cloudFiles with a stable checkpoint path for the property_reservation_updates_highland stream is the intended durable approach for property_reservation_updates_highland: it addresses the verified problem (a streaming file reader for property_reservation_updates_highland reprocesses historical data after every job restart) while preserving the required behavior (a restart must resume discovered files instead of replaying all existing input). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Deleting checkpoint progress can cause full replay. The proposed action (Delete checkpoint state as part of each successful load at Multi-region rental platform) does not meet the requirement that a restart must resume discovered files instead of replaying all existing input, nor does it constitute the target approach.

B:

Inspect checkpoint continuity, discovery progress and input file identifiers could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The property_reservation_updates_highland workflow still requires that a restart must resume discovered files instead of replaying all existing input.

C:

Monitor checkpoint accessibility and unexpected replay volume for property_reservation_updates_highland would help detect future recurrence, but metrics alone do not deliver the target approach. The property_reservation_updates_highland requirement is that a restart must resume discovered files instead of replaying all existing input.

Question 356

A data engineer at Environmental inspection office is responsible for sampling field notes. The approximate distinct count issue is that sampling_field_notes_metro serves an exploratory dashboard counting hundreds of millions of unique session IDs. The supporting evidence is that exact count-distinct creates high aggregation cost during interactive prototyping. The engineer must ensure that users explicitly accept bounded approximation in exchange for speed. The failure and requirements have been diagnosed; the team must select the lasting pipeline or governance approach. Which durable Databricks control best addresses the requirement?

  1. Use approx_count_distinct for approximate high-cardinality distinct estimates
  2. Measure cardinality, acceptable error and resource use for sampling_field_notes_metro
  3. Substitute sum(session_id) as an estimate of unique sessions at Environmental inspection office
  4. Monitor relative error on sampled exact baselines for sampling_field_notes_metro

Explanation

Correct Answer

A:

Use approx_count_distinct for approximate high-cardinality distinct estimates is the intended durable approach for sampling_field_notes_metro: it addresses the verified problem (sampling_field_notes_metro serves an exploratory dashboard counting hundreds of millions of unique session IDs) while preserving the required behavior (users explicitly accept bounded approximation in exchange for speed). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

B:

Measure cardinality, acceptable error and resource use for sampling_field_notes_metro could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The sampling_field_notes_metro workflow still requires that users explicitly accept bounded approximation in exchange for speed.

C:

Adding identifiers is not a distinct-count estimator. The proposed action (Substitute sum(session_id) as an estimate of unique sessions at Environmental inspection office) does not meet the requirement that users explicitly accept bounded approximation in exchange for speed, nor does it constitute the target approach.

D:

Monitor relative error on sampled exact baselines for sampling_field_notes_metro would help detect future recurrence, but metrics alone do not deliver the target approach. The sampling_field_notes_metro requirement is that users explicitly accept bounded approximation in exchange for speed.

Question 357

Consider the borrower_circulation_events_coastal workload at City library association: mobile borrower_circulation_events_coastal events arrive late and sometimes duplicate within an event-time window. Inspection found that several event IDs reappear after an offline device reconnect. The governed outcome must ensure that the stream must remove duplicates without retaining infinite state. The team has not selected a remedy. It first needs evidence that distinguishes the actual dependency or data fault. Which evidence-gathering action should precede an architectural change?

  1. Deduplicate with stable event IDs and a bounded event-time watermark
  2. Test streaming replay with simulated delay and state checkpointing
  3. Measure late-arrival distribution and validate event IDs and timestamps for borrower_circulation_events_coastal
  4. Retain every key forever in unbounded streaming state at City library association

Explanation

Correct Answer

C:

Measure late-arrival distribution and validate event IDs and timestamps for borrower_circulation_events_coastal directly investigates the evidence (several event IDs reappear after an offline device reconnect) and distinguishes possible causes of mobile borrower_circulation_events_coastal events arrive late and sometimes duplicate within an event-time window. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: the stream must remove duplicates without retaining infinite state.

Incorrect Answers

A:

Deduplicate with stable event IDs and a bounded event-time watermark is a plausible lasting design once chosen, but it does not perform the required pre-change investigation at this stage. In the borrower_circulation_events_coastal scenario, the observed evidence is that several event IDs reappear after an offline device reconnect; the requirement remains: the stream must remove duplicates without retaining infinite state.

B:

Test streaming replay with simulated delay and state checkpointing 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 several event IDs reappear after an offline device reconnect.

D:

Unbounded state eventually destabilizes a long-running stream. The proposed action (Retain every key forever in unbounded streaming state at City library association) does not meet the requirement that the stream must remove duplicates without retaining infinite state, nor does it constitute the required pre-change investigation.

Question 358

At Pet-care booking platform, the DAG task dependency workflow handles appointment requests. The problem is that appointment_requests_highland gold report launches before silver validation finishes. Evidence: a task graph shows report and validation as parallel children of ingestion. Constraint: downstream publishing must not start until all required upstream checks succeed. 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. Schedule every task at the same clock time and hope upstream processing completes at Pet-care booking platform
  2. Reconfigure the job task graph and test one run with a delayed validator
  3. Pause the validator and verify publish does not start early
  4. Read job DAG edges and task-run timestamps for appointment_requests_highland

Explanation

Correct Answer

C:

Pause the validator and verify publish does not start early directly tests the behavior that should change after the correction. With the observed evidence (a task graph shows report and validation as parallel children of ingestion), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that downstream publishing must not start until all required upstream checks succeed.

Incorrect Answers

A:

Clock coincidence does not enforce dependency correctness. The proposed action (Schedule every task at the same clock time and hope upstream processing completes at Pet-care booking platform) does not meet the requirement that downstream publishing must not start until all required upstream checks succeed, nor does it constitute the post-change acceptance test.

B:

Reconfigure the job task graph and test one run with a delayed validator 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 a task graph shows report and validation as parallel children of ingestion.

D:

Read job DAG edges and task-run timestamps for appointment_requests_highland 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_highland workflow still requires that downstream publishing must not start until all required upstream checks succeed.

Question 359

At Municipal waste service, the Spark shuffle volume workflow handles collection telemetry. The problem is that collection_telemetry_south aggregation spends more time in shuffle than in input scanning. Evidence: Spark UI shows large shuffle read/write and long exchange stages. Constraint: the transformation must preserve results while reducing unnecessary data movement. 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 shuffle read bytes, stage latency and task failures for collection_telemetry_south
  2. Inspect physical plan exchanges, join keys and partition sizes for collection_telemetry_south
  3. Reduce avoidable shuffles through appropriate join strategy and pre-aggregation
  4. Increase driver memory alone and assume shuffle disappears at Municipal waste service

Explanation

Correct Answer

C:

Reduce avoidable shuffles through appropriate join strategy and pre-aggregation is the intended durable approach for collection_telemetry_south: it addresses the verified problem (collection_telemetry_south aggregation spends more time in shuffle than in input scanning) while preserving the required behavior (the transformation must preserve results while reducing unnecessary data movement). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Monitor shuffle read bytes, stage latency and task failures for collection_telemetry_south would help detect future recurrence, but metrics alone do not deliver the target approach. The collection_telemetry_south requirement is that the transformation must preserve results while reducing unnecessary data movement.

B:

Inspect physical plan exchanges, join keys and partition sizes for collection_telemetry_south could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The collection_telemetry_south workflow still requires that the transformation must preserve results while reducing unnecessary data movement.

D:

Driver sizing does not remove distributed shuffle operations. The proposed action (Increase driver memory alone and assume shuffle disappears at Municipal waste service) does not meet the requirement that the transformation must preserve results while reducing unnecessary data movement, nor does it constitute the target approach.

Question 360

At Public weather agency, the station observation files workflow depends on station_observation_files_island. Engineers report that station_observation_files_island Spark Declarative Pipeline is managed separately and not part of the daily job; the evidence is that analytics runs before the pipeline produces its updated streaming table. They require that job orchestration must wait for pipeline update completion. 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. Attach the governed pipeline to the job and pilot the execution graph
  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

B:

Inspect pipeline identity, job task settings and downstream dependencies for station_observation_files_island directly investigates the evidence (analytics runs before the pipeline produces its updated streaming table) and distinguishes possible causes of station_observation_files_island Spark Declarative Pipeline is managed separately and not part of the daily job. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: job orchestration must wait for pipeline update completion.

Incorrect Answers

A:

Attach the governed pipeline to the job and pilot the execution graph 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 analytics runs before the pipeline produces its updated streaming table.

C:

Use a Lakeflow pipeline task with success dependency before analytics tasks is a plausible lasting design once chosen, but it does not perform the required pre-change investigation at this stage. In the station_observation_files_island scenario, the observed evidence is that analytics runs before the pipeline produces its updated streaming table; the requirement remains: 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 required pre-change investigation.

Certified Data Engineer Associate Practice Tests