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Databricks Certified Data Engineer Associate Practice Test 5

Question 40

A data engineer at Maritime safety agency is responsible for vessel position events. The table SELECT least privilege issue is that vessel_position_events_central contractor group needs read-only curated aggregates but can edit source tables. The supporting evidence is that privilege audit shows broad write grants inherited from a project role. The engineer must ensure that group must query approved output without data modification. 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. Grant SELECT on approved table and remove unnecessary write permissions
  2. Grant ALL PRIVILEGES on the entire catalog to a read-only group at Maritime safety agency
  3. Identify group membership, inherited privileges and accessible tables for vessel_position_events_central
  4. Replace broad grants through a staged permission change with rollback

Explanation

Correct Answer

C:

Identify group membership, inherited privileges and accessible tables for vessel_position_events_central directly investigates the evidence (privilege audit shows broad write grants inherited from a project role) and distinguishes possible causes of vessel_position_events_central contractor group needs read-only curated aggregates but can edit source tables. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: group must query approved output without data modification.

Incorrect Answers

A:

Grant SELECT on approved table and remove unnecessary write permissions is a plausible lasting design once chosen, but it does not perform the required pre-change investigation at this stage. In the vessel_position_events_central scenario, the observed evidence is that privilege audit shows broad write grants inherited from a project role; the requirement remains: group must query approved output without data modification.

B:

All privileges violate read-only requirement. The proposed action (Grant ALL PRIVILEGES on the entire catalog to a read-only group at Maritime safety agency) does not meet the requirement that group must query approved output without data modification, nor does it constitute the required pre-change investigation.

D:

Replace broad grants through a staged permission change with rollback 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 privilege audit shows broad write grants inherited from a project role.

Question 41

At Media postproduction team, the Git branch review workflow handles render-job telemetry. The problem is that developers edit render_job_telemetry_west production notebooks directly and bypass code review. Evidence: workspace Git history shows changes without a pull request. Constraint: releases need traceable approval and a recoverable commit. The team has not selected a remedy. It first needs evidence that distinguishes the actual dependency or data fault. Which investigation is the strongest first step?

  1. Commit and push the change, review it, then deploy the merged revision
  2. Copy arbitrary notebook cells into production without a commit at Media postproduction team
  3. Inspect working branch, remote commit and protected-base rules for render_job_telemetry_west
  4. Develop in a feature branch with a reviewed pull request before merging

Explanation

Correct Answer

C:

Inspect working branch, remote commit and protected-base rules for render_job_telemetry_west directly investigates the evidence (workspace Git history shows changes without a pull request) and distinguishes possible causes of developers edit render_job_telemetry_west production notebooks directly and bypass code review. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: releases need traceable approval and a recoverable commit.

Incorrect Answers

A:

Commit and push the change, review it, then deploy the merged revision 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 workspace Git history shows changes without a pull request.

B:

Untracked copies cannot reliably reproduce the approved source. The proposed action (Copy arbitrary notebook cells into production without a commit at Media postproduction team) does not meet the requirement that releases need traceable approval and a recoverable commit, nor does it constitute the required pre-change investigation.

D:

Develop in a feature branch with a reviewed pull request before merging is a plausible lasting design once chosen, but it does not perform the required pre-change investigation at this stage. In the render_job_telemetry_west scenario, the observed evidence is that workspace Git history shows changes without a pull request; the requirement remains: releases need traceable approval and a recoverable commit.

Question 42

A data engineer at E-commerce payments provider is responsible for payment authorization records. The time-based versus event trigger issue is that payment_authorization_records_rural ledger export is legally due at 06:00 even when no new records arrive. The supporting evidence is that operators propose a file trigger that may not run on quiet days. The engineer must ensure that an empty but valid daily export must still be delivered. The first acceptance run passed. The current task is to detect future regressions and changes over time. What repeatable measure detects this failure after go-live?

  1. Use only file-arrival triggers for a mandatory daily report at E-commerce payments provider
  2. Monitor deadline misses and incomplete empty-day acknowledgments for payment_authorization_records_rural
  3. Use a time-based schedule for mandatory daily reporting independent of arrivals
  4. Simulate a day without files and verify on-time report generation

Explanation

Correct Answer

B:

Monitor deadline misses and incomplete empty-day acknowledgments for payment_authorization_records_rural creates recurring visibility into the failure mode (payment_authorization_records_rural ledger export is legally due at 06:00 even when no new records arrive). Unlike a single successful test, the measure can reveal drift, lag, or new failures after later source and deployment changes while an empty but valid daily export must still be delivered.

Incorrect Answers

A:

Quiet source days would skip the required calendar delivery. The proposed action (Use only file-arrival triggers for a mandatory daily report at E-commerce payments provider) does not meet the requirement that an empty but valid daily export must still be delivered, nor does it constitute continuing operational detection.

C:

Use a time-based schedule for mandatory daily reporting independent of arrivals is a plausible lasting design once chosen, but it does not perform continuing operational detection at this stage. In the payment_authorization_records_rural scenario, the observed evidence is that operators propose a file trigger that may not run on quiet days; the requirement remains: an empty but valid daily export must still be delivered.

D:

Simulate a day without files and verify on-time report generation is a one-time acceptance check. It does not supply continuing operational detection for payment_authorization_records_rural; a passing test cannot substitute for the specific task now required.

Question 43

A data engineer at Cloud gaming cooperative is responsible for match-session events. The REST pagination and retries issue is that the match_session_events_urban partner API returns 100 rows per page but the batch stores only the first page. The supporting evidence is that response metadata includes a next cursor that the client ignores. The engineer must ensure that all authorized records must be imported without exceeding API limits. 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. Test pagination on a multi-page source with backoff for HTTP 429
  2. Implement cursor pagination with bounded retries and idempotent destination keys
  3. Stop after one successful HTTP 200 response at Cloud gaming cooperative
  4. Inspect response cursor, throttle status and stable identity for match_session_events_urban

Explanation

Correct Answer

D:

Inspect response cursor, throttle status and stable identity for match_session_events_urban directly investigates the evidence (response metadata includes a next cursor that the client ignores) and distinguishes possible causes of the match_session_events_urban partner API returns 100 rows per page but the batch stores only the first page. It establishes what must be corrected without assuming a fix before verifying the stated business requirement: all authorized records must be imported without exceeding API limits.

Incorrect Answers

A:

Test pagination on a multi-page source with backoff for HTTP 429 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 response metadata includes a next cursor that the client ignores.

B:

Implement cursor pagination with bounded retries and idempotent destination keys is a plausible lasting design once chosen, but it does not perform the required pre-change investigation 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.

C:

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 required pre-change investigation.

Question 44

Consider the factory_defect_records_urban workload at Manufacturing quality network: factory_defect_records_urban scheduled ingestion succeeds under one employee but fails under automation identity. Inspection found that UC audit shows only the employee has the required table rights. The governed outcome must ensure that the job must operate under a managed nonhuman least-privilege principal. 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. Run the pipeline end-to-end using the service principal and deny unrelated catalogs
  2. Share a workspace administrator's personal access token with all job owners at Manufacturing quality network
  3. Monitor service principal grants and failed authentication for factory_defect_records_urban
  4. Grant the required scoped privileges to an approved service principal

Explanation

Correct Answer

C:

Monitor service principal grants and failed authentication for factory_defect_records_urban creates recurring visibility into the failure mode (factory_defect_records_urban scheduled ingestion succeeds under one employee but fails under automation identity). Unlike a single successful test, the measure can reveal drift, lag, or new failures after later source and deployment changes while the job must operate under a managed nonhuman least-privilege principal.

Incorrect Answers

A:

Run the pipeline end-to-end using the service principal and deny unrelated catalogs is a one-time acceptance check. It does not supply continuing operational detection for factory_defect_records_urban; a passing test cannot substitute for the specific task now required.

B:

Shared personal tokens are fragile and overprivileged. The proposed action (Share a workspace administrator's personal access token with all job owners at Manufacturing quality network) does not meet the requirement that the job must operate under a managed nonhuman least-privilege principal, nor does it constitute continuing operational detection.

D:

Grant the required scoped privileges to an approved service principal is a plausible lasting design once chosen, but it does not perform continuing operational detection at this stage. In the factory_defect_records_urban scenario, the observed evidence is that UC audit shows only the employee has the required table rights; the requirement remains: the job must operate under a managed nonhuman least-privilege principal.

Question 45

Consider the pollution_measurements_delta workload at Air quality nonprofit: pollution_measurements_delta bundle deployment fails after someone changes its job task reference. Inspection found that CLI output identifies invalid resource or variable configuration. The governed outcome must ensure that the error must be caught before production resources change. 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. Inspect bundle manifest, resource paths and reported validator errors for pollution_measurements_delta
  2. Always run bundle deploy despite failing validation at Air quality nonprofit
  3. Submit a deliberately invalid bundle and confirm promotion is blocked
  4. Add validation to CI and fail the job on errors

Explanation

Correct Answer

C:

Submit a deliberately invalid bundle and confirm promotion is blocked directly tests the behavior that should change after the correction. With the observed evidence (CLI output identifies invalid resource or variable configuration), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that the error must be caught before production resources change.

Incorrect Answers

A:

Inspect bundle manifest, resource paths and reported validator errors for pollution_measurements_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 pollution_measurements_delta workflow still requires that the error must be caught before production resources change.

B:

Deploying invalid configuration bypasses the preflight gate. The proposed action (Always run bundle deploy despite failing validation at Air quality nonprofit) does not meet the requirement that the error must be caught before production resources change, nor does it constitute the post-change acceptance test.

D:

Add validation to CI and fail the job on errors 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 CLI output identifies invalid resource or variable configuration.

Question 46

At Multi-region rental platform, the property reservation updates workflow depends on property_reservation_updates_east. Engineers report that property_reservation_updates_east aggregation spends more time in shuffle than in input scanning; the evidence is that Spark UI shows large shuffle read/write and long exchange stages. They require that the transformation must preserve results while reducing unnecessary data movement. 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. Inspect physical plan exchanges, join keys and partition sizes for property_reservation_updates_east
  2. Increase driver memory alone and assume shuffle disappears at Multi-region rental platform
  3. Pilot a plan change with fixed input and capture Spark UI metrics
  4. Compare result equivalence and shuffle bytes before and after tuning

Explanation

Correct Answer

D:

Compare result equivalence and shuffle bytes before and after tuning directly tests the behavior that should change after the correction. With the observed evidence (Spark UI shows large shuffle read/write and long exchange stages), the acceptance result must demonstrate actual data or permission correctness, while retaining the requirement that the transformation must preserve results while reducing unnecessary data movement.

Incorrect Answers

A:

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

B:

Driver sizing does not remove distributed shuffle operations. The proposed action (Increase driver memory alone and assume shuffle disappears at Multi-region rental platform) does not meet the requirement that the transformation must preserve results while reducing unnecessary data movement, nor does it constitute the post-change acceptance test.

C:

Pilot a plan change with fixed input and capture Spark UI metrics 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 Spark UI shows large shuffle read/write and long exchange stages.

Question 47

A data engineer at Food delivery franchise is responsible for dispatch and delivery status. The disk spilling due to memory issue is that dispatch_and_delivery_status_highland sort aggregation spills gigabytes of intermediates to disk. The supporting evidence is that stage metrics show spilled bytes and GC pressure on executors. The engineer must ensure that the job should improve without losing aggregation accuracy. 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. Monitor memory spill and long-GC trends for dispatch_and_delivery_status_highland
  2. Disable logs and assume spilled data was never written at Food delivery franchise
  3. Right-size memory or repartition workload based on measured per-task pressure
  4. Compare per-task memory, partition sizes and spill metrics for dispatch_and_delivery_status_highland

Explanation

Correct Answer

C:

Right-size memory or repartition workload based on measured per-task pressure is the intended durable approach for dispatch_and_delivery_status_highland: it addresses the verified problem (dispatch_and_delivery_status_highland sort aggregation spills gigabytes of intermediates to disk) while preserving the required behavior (the job should improve without losing aggregation accuracy). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Monitor memory spill and long-GC trends for dispatch_and_delivery_status_highland would help detect future recurrence, but metrics alone do not deliver the target approach. The dispatch_and_delivery_status_highland requirement is that the job should improve without losing aggregation accuracy.

B:

Missing telemetry cannot correct memory pressure. The proposed action (Disable logs and assume spilled data was never written at Food delivery franchise) does not meet the requirement that the job should improve without losing aggregation accuracy, nor does it constitute the target approach.

D:

Compare per-task memory, partition sizes and spill metrics for dispatch_and_delivery_status_highland could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The dispatch_and_delivery_status_highland workflow still requires that the job should improve without losing aggregation accuracy.

Question 48

At Veterinary clinic association, the Delta Sharing cross-org workflow handles treatment billing events. The problem is that treatment_billing_events_delta provider needs to offer a governed read-only subset to an external partner. Evidence: partner does not have workspace access but needs fresh authorized data. Constraint: sharing must not distribute uncontrolled file copies or edit privileges. 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 share access, recipient lifecycle and unexpected additions for treatment_billing_events_delta
  2. Inventory recipient type, share permissions and approved datasets for treatment_billing_events_delta
  3. Use Delta Sharing with a configured provider share and appropriate recipient credentials
  4. Email raw Delta storage credentials and allow partner writes at Veterinary clinic association

Explanation

Correct Answer

C:

Use Delta Sharing with a configured provider share and appropriate recipient credentials is the intended durable approach for treatment_billing_events_delta: it addresses the verified problem (treatment_billing_events_delta provider needs to offer a governed read-only subset to an external partner) while preserving the required behavior (sharing must not distribute uncontrolled file copies or edit privileges). A diagnostic or monitoring step alone would not create this target-state behavior.

Incorrect Answers

A:

Monitor share access, recipient lifecycle and unexpected additions for treatment_billing_events_delta would help detect future recurrence, but metrics alone do not deliver the target approach. The treatment_billing_events_delta requirement is that sharing must not distribute uncontrolled file copies or edit privileges.

B:

Inventory recipient type, share permissions and approved datasets for treatment_billing_events_delta could clarify the original fault, but the available evidence already establishes its scope; it is not the target approach now requested. The treatment_billing_events_delta workflow still requires that sharing must not distribute uncontrolled file copies or edit privileges.

D:

Sharing object-storage secrets bypasses governed read-only access. The proposed action (Email raw Delta storage credentials and allow partner writes at Veterinary clinic association) does not meet the requirement that sharing must not distribute uncontrolled file copies or edit privileges, nor does it constitute the target approach.

Question 49

Consider the render_job_telemetry_metro workload at Media postproduction team: render_job_telemetry_metro aggregation spends most time scheduling thousands of tiny shuffle tasks. Inspection found that Spark UI shows very low per-task data size and excessive scheduling overhead. The governed outcome must ensure that performance changes must be benchmarked against the same output. 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. Watch task count, spill and stage duration after tuning render_job_telemetry_metro
  2. Tune spark.sql.shuffle.partitions or AQE behavior based on measured shuffle workload
  3. Rerun identical aggregation and verify result parity and faster completion
  4. Increase shuffle partitions without measuring task size or skew at Media postproduction team

Explanation

Correct Answer

A:

Watch task count, spill and stage duration after tuning render_job_telemetry_metro creates recurring visibility into the failure mode (render_job_telemetry_metro aggregation spends most time scheduling thousands of tiny shuffle tasks). Unlike a single successful test, the measure can reveal drift, lag, or new failures after later source and deployment changes while performance changes must be benchmarked against the same output.

Incorrect Answers

B:

Tune spark.sql.shuffle.partitions or AQE behavior based on measured shuffle workload is a plausible lasting design once chosen, but it does not perform continuing operational detection at this stage. In the render_job_telemetry_metro scenario, the observed evidence is that Spark UI shows very low per-task data size and excessive scheduling overhead; the requirement remains: performance changes must be benchmarked against the same output.

C:

Rerun identical aggregation and verify result parity and faster completion is a one-time acceptance check. It does not supply continuing operational detection for render_job_telemetry_metro; a passing test cannot substitute for the specific task now required.

D:

Arbitrary partition expansion can increase overhead. The proposed action (Increase shuffle partitions without measuring task size or skew at Media postproduction team) does not meet the requirement that performance changes must be benchmarked against the same output, nor does it constitute continuing operational detection.

Question 50

A data engineer at Agricultural credit union is responsible for farm-loan transaction history. The file arrival trigger issue is that farm_loan_transaction_history_coastal job runs hourly although only one file arrives most days. The supporting evidence is that execution history shows repeated empty runs with compute startup cost. The engineer must ensure that process each new delivered file promptly without idle polling. The first acceptance run passed. The current task is to detect future regressions and changes over time. What repeatable measure detects this failure after go-live?

  1. Monitor missed arrival events and repeated empty executions for farm_loan_transaction_history_coastal
  2. Use a supported file-arrival trigger for the eligible storage location
  3. Upload a test file and confirm exactly the expected run fires
  4. Run a full pipeline every minute even if no files arrive at Agricultural credit union

Explanation

Correct Answer

A:

Monitor missed arrival events and repeated empty executions for farm_loan_transaction_history_coastal creates recurring visibility into the failure mode (farm_loan_transaction_history_coastal job runs hourly although only one file arrives most days). Unlike a single successful test, the measure can reveal drift, lag, or new failures after later source and deployment changes while process each new delivered file promptly without idle polling.

Incorrect Answers

B:

Use a supported file-arrival trigger for the eligible storage location is a plausible lasting design once chosen, but it does not perform continuing operational detection at this stage. In the farm_loan_transaction_history_coastal scenario, the observed evidence is that execution history shows repeated empty runs with compute startup cost; the requirement remains: process each new delivered file promptly without idle polling.

C:

Upload a test file and confirm exactly the expected run fires is a one-time acceptance check. It does not supply continuing operational detection for farm_loan_transaction_history_coastal; a passing test cannot substitute for the specific task now required.

D:

Repetitive empty executions waste compute and cost. The proposed action (Run a full pipeline every minute even if no files arrive at Agricultural credit union) does not meet the requirement that process each new delivered file promptly without idle polling, nor does it constitute continuing operational detection.

Certified Data Engineer Associate Practice Tests