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Exam Code: Certified Data Engineer Professional

Exam Name Certified Data Engineer Professional

Certification Provider: Databricks

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Databricks Certified Data Engineer Professional Practice Test 89

Question 880

A complex Lakeflow Job has ten tasks, and one downstream branch fails after several others succeed. A reviewer sees that engineers chose Repair the critical branch and explicitly defer independent noncritical branches. To verify A workflow has several independent failed branches and only one business-critical branch needs immediate recovery, what should the reviewer observe?

  1. The repaired run succeeds after the defect is removed
  2. The complete dependency path executes and produces valid outputs
  3. Only required failed/downstream tasks rerun while upstream results are reused
  4. The critical output is restored without claiming the other failures are fixed

Explanation

Correct Answer

D:

The team used Repair the critical branch and explicitly defer independent noncritical branches to fulfill “A workflow has several independent failed branches and only one business-critical branch needs immediate recovery.” Observing The critical output is restored without claiming the other failures are fixed confirms the intended effect in the resulting workload.

Incorrect Answers

A:

That observation is a valid indicator for “A deterministic invalid-data failure will recur on automatic retry” when using Correct or quarantine the bad input before initiating a targeted repair. The scenario instead tests “A workflow has several independent failed branches and only one business-critical branch needs immediate recovery”; the relevant result is The critical output is restored without claiming the other failures are fixed.

B:

The complete dependency path executes and produces valid outputs pertains to a different control (Include the required dependent tasks in the repair plan) and a different need (A repair attempt fails because a downstream dependency was not included). It cannot establish that Repair the critical branch and explicitly defer independent noncritical branches met the stated goal.

C:

Only required failed/downstream tasks rerun while upstream results are reused would demonstrate the separate action Use a supported repair run targeting failed tasks and dependencies, which addresses “A downstream task failed while upstream outputs are valid and should not be rerun unnecessarily.” It does not verify the requirement “A workflow has several independent failed branches and only one business-critical branch needs immediate recovery” following Repair the critical branch and explicitly defer independent noncritical branches.

Question 881

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. Production acceptance depends on this condition: A Python task raises ImportError only on the production job compute. What should the engineer configure?

  1. Inspect Spark UI executor metrics and task failure stack traces
  2. Inspect the Query Profile for scan, join and shuffle operators
  3. Inspect job run failure and relevant UC permission requirements
  4. Inspect driver logs and the job environment dependency list

Explanation

Correct Answer

D:

For this scenario, Inspect driver logs and the job environment dependency list implements the behavior required by “A Python task raises ImportError only on the production job compute.” Check the resulting state against: The missing library and runtime mismatch are identified.

Incorrect Answers

A:

This action solves a different issue: “A Spark task fails due to an executor out-of-memory error.” Its normal signal is The OOM stage and memory-intensive operation are identified. Here the requested behavior is “A Python task raises ImportError only on the production job compute,” so that signal is not sufficient.

B:

This action solves a different issue: “A SQL statement performs poorly but execution succeeds.” Its normal signal is The dominant operator and data movement are identified. Here the requested behavior is “A Python task raises ImportError only on the production job compute,” so that signal is not sufficient.

C:

The alternative Inspect job run failure and relevant UC permission requirements has a distinct purpose—A job is rejected before execution due to insufficient access privileges. It would not establish the required outcome (A Python task raises ImportError only on the production job compute); the necessary verification concerns The missing library and runtime mismatch are identified.

Question 882

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. The team implements Inspect driver logs and the job environment dependency list. The goal was: A Python task raises ImportError only on the production job compute. Which observed result best verifies success?

  1. The dominant operator and data movement are identified
  2. The missing library and runtime mismatch are identified
  3. The event log names the flow and cause of failure
  4. A permission error identifies the missing allowed securable privilege

Explanation

Correct Answer

B:

The missing library and runtime mismatch are identified is the matching outcome for the implemented control (Inspect driver logs and the job environment dependency list) and the stated requirement “A Python task raises ImportError only on the production job compute.”

Incorrect Answers

A:

The dominant operator and data movement are identified would demonstrate the separate action Inspect the Query Profile for scan, join and shuffle operators, which addresses “A SQL statement performs poorly but execution succeeds.” It does not verify the requirement “A Python task raises ImportError only on the production job compute” following Inspect driver logs and the job environment dependency list.

C:

The event log names the flow and cause of failure pertains to a different control (Inspect pipeline event logs for the failed flow and error record) and a different need (A Lakeflow pipeline has a failed update with no obvious notebook stack trace). It cannot establish that Inspect driver logs and the job environment dependency list met the stated goal.

D:

A permission error identifies the missing allowed securable privilege would demonstrate the separate action Inspect job run failure and relevant UC permission requirements, which addresses “A job is rejected before execution due to insufficient access privileges.” It does not verify the requirement “A Python task raises ImportError only on the production job compute” following Inspect driver logs and the job environment dependency list.

Question 883

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. During rollout, stakeholders require: A Spark task fails due to an executor out-of-memory error. Which approach is the strongest fit?

  1. Inspect job run failure and relevant UC permission requirements
  2. Inspect Spark UI executor metrics and task failure stack traces
  3. Inspect pipeline event logs for the failed flow and error record
  4. Inspect driver logs and the job environment dependency list

Explanation

Correct Answer

B:

The requested outcome is “A Spark task fails due to an executor out-of-memory error.” Inspect Spark UI executor metrics and task failure stack traces is the matching action; The OOM stage and memory-intensive operation are identified gives observable acceptance evidence.

Incorrect Answers

A:

This action solves a different issue: “A job is rejected before execution due to insufficient access privileges.” Its normal signal is A permission error identifies the missing allowed securable privilege. Here the requested behavior is “A Spark task fails due to an executor out-of-memory error,” so that signal is not sufficient.

C:

The alternative Inspect pipeline event logs for the failed flow and error record has a distinct purpose—A Lakeflow pipeline has a failed update with no obvious notebook stack trace. It would not establish the required outcome (A Spark task fails due to an executor out-of-memory error); the necessary verification concerns The OOM stage and memory-intensive operation are identified.

D:

Inspect driver logs and the job environment dependency list belongs to the separate case “A Python task raises ImportError only on the production job compute,” where The missing library and runtime mismatch are identified would be expected. That differs from the condition in this stem: “A Spark task fails due to an executor out-of-memory error.”

Question 884

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. After configuring Inspect Spark UI executor metrics and task failure stack traces, the engineer must validate: A Spark task fails due to an executor out-of-memory error. What evidence is decisive?

  1. A permission error identifies the missing allowed securable privilege
  2. The OOM stage and memory-intensive operation are identified
  3. The dominant operator and data movement are identified
  4. The event log names the flow and cause of failure

Explanation

Correct Answer

B:

The OOM stage and memory-intensive operation are identified is the matching outcome for the implemented control (Inspect Spark UI executor metrics and task failure stack traces) and the stated requirement “A Spark task fails due to an executor out-of-memory error.”

Incorrect Answers

A:

A permission error identifies the missing allowed securable privilege would demonstrate the separate action Inspect job run failure and relevant UC permission requirements, which addresses “A job is rejected before execution due to insufficient access privileges.” It does not verify the requirement “A Spark task fails due to an executor out-of-memory error” following Inspect Spark UI executor metrics and task failure stack traces.

C:

The dominant operator and data movement are identified would demonstrate the separate action Inspect the Query Profile for scan, join and shuffle operators, which addresses “A SQL statement performs poorly but execution succeeds.” It does not verify the requirement “A Spark task fails due to an executor out-of-memory error” following Inspect Spark UI executor metrics and task failure stack traces.

D:

The event log names the flow and cause of failure would demonstrate the separate action Inspect pipeline event logs for the failed flow and error record, which addresses “A Lakeflow pipeline has a failed update with no obvious notebook stack trace.” It does not verify the requirement “A Spark task fails due to an executor out-of-memory error” following Inspect Spark UI executor metrics and task failure stack traces.

Question 885

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. The engineering team must satisfy this constraint: A Lakeflow pipeline has a failed update with no obvious notebook stack trace. Select the best technical action.

  1. Inspect the Query Profile for scan, join and shuffle operators
  2. Inspect Spark UI executor metrics and task failure stack traces
  3. Inspect job run failure and relevant UC permission requirements
  4. Inspect pipeline event logs for the failed flow and error record

Explanation

Correct Answer

D:

The requirement concerns “A Lakeflow pipeline has a failed update with no obvious notebook stack trace.” The selected operation, Inspect pipeline event logs for the failed flow and error record, is the direct engineering control. Its effect can be checked by confirming: The event log names the flow and cause of failure.

Incorrect Answers

A:

This action solves a different issue: “A SQL statement performs poorly but execution succeeds.” Its normal signal is The dominant operator and data movement are identified. Here the requested behavior is “A Lakeflow pipeline has a failed update with no obvious notebook stack trace,” so that signal is not sufficient.

B:

The alternative Inspect Spark UI executor metrics and task failure stack traces has a distinct purpose—A Spark task fails due to an executor out-of-memory error. It would not establish the required outcome (A Lakeflow pipeline has a failed update with no obvious notebook stack trace); the necessary verification concerns The event log names the flow and cause of failure.

C:

This action solves a different issue: “A job is rejected before execution due to insufficient access privileges.” Its normal signal is A permission error identifies the missing allowed securable privilege. Here the requested behavior is “A Lakeflow pipeline has a failed update with no obvious notebook stack trace,” so that signal is not sufficient.

Question 886

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. A production deployment uses Inspect pipeline event logs for the failed flow and error record to address: A Lakeflow pipeline has a failed update with no obvious notebook stack trace. Which signal should QA check?

  1. The event log names the flow and cause of failure
  2. The OOM stage and memory-intensive operation are identified
  3. The missing library and runtime mismatch are identified
  4. A permission error identifies the missing allowed securable privilege

Explanation

Correct Answer

A:

The event log names the flow and cause of failure is the matching outcome for the implemented control (Inspect pipeline event logs for the failed flow and error record) and the stated requirement “A Lakeflow pipeline has a failed update with no obvious notebook stack trace.”

Incorrect Answers

B:

That observation is a valid indicator for “A Spark task fails due to an executor out-of-memory error” when using Inspect Spark UI executor metrics and task failure stack traces. The scenario instead tests “A Lakeflow pipeline has a failed update with no obvious notebook stack trace”; the relevant result is The event log names the flow and cause of failure.

C:

This signal belongs to the adjacent case “A Python task raises ImportError only on the production job compute,” whose remedy is Inspect driver logs and the job environment dependency list. The observed result for the present requirement is The event log names the flow and cause of failure.

D:

This signal belongs to the adjacent case “A job is rejected before execution due to insufficient access privileges,” whose remedy is Inspect job run failure and relevant UC permission requirements. The observed result for the present requirement is The event log names the flow and cause of failure.

Question 887

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. Production acceptance depends on this condition: A SQL statement performs poorly but execution succeeds. What should the engineer configure?

  1. Inspect driver logs and the job environment dependency list
  2. Inspect the Query Profile for scan, join and shuffle operators
  3. Inspect Spark UI executor metrics and task failure stack traces
  4. Inspect job run failure and relevant UC permission requirements

Explanation

Correct Answer

B:

For this scenario, Inspect the Query Profile for scan, join and shuffle operators implements the behavior required by “A SQL statement performs poorly but execution succeeds.” Check the resulting state against: The dominant operator and data movement are identified.

Incorrect Answers

A:

This action solves a different issue: “A Python task raises ImportError only on the production job compute.” Its normal signal is The missing library and runtime mismatch are identified. Here the requested behavior is “A SQL statement performs poorly but execution succeeds,” so that signal is not sufficient.

C:

Inspect Spark UI executor metrics and task failure stack traces is appropriate when “A Spark task fails due to an executor out-of-memory error”; it would be verified by The OOM stage and memory-intensive operation are identified. It does not directly satisfy “A SQL statement performs poorly but execution succeeds,” whose relevant acceptance evidence is The dominant operator and data movement are identified.

D:

The alternative Inspect job run failure and relevant UC permission requirements has a distinct purpose—A job is rejected before execution due to insufficient access privileges. It would not establish the required outcome (A SQL statement performs poorly but execution succeeds); the necessary verification concerns The dominant operator and data movement are identified.

Question 888

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. The team implements Inspect the Query Profile for scan, join and shuffle operators. The goal was: A SQL statement performs poorly but execution succeeds. Which observed result best verifies success?

  1. A permission error identifies the missing allowed securable privilege
  2. The OOM stage and memory-intensive operation are identified
  3. The event log names the flow and cause of failure
  4. The dominant operator and data movement are identified

Explanation

Correct Answer

D:

The team used Inspect the Query Profile for scan, join and shuffle operators to fulfill “A SQL statement performs poorly but execution succeeds.” Observing The dominant operator and data movement are identified confirms the intended effect in the resulting workload.

Incorrect Answers

A:

A permission error identifies the missing allowed securable privilege would demonstrate the separate action Inspect job run failure and relevant UC permission requirements, which addresses “A job is rejected before execution due to insufficient access privileges.” It does not verify the requirement “A SQL statement performs poorly but execution succeeds” following Inspect the Query Profile for scan, join and shuffle operators.

B:

That observation is a valid indicator for “A Spark task fails due to an executor out-of-memory error” when using Inspect Spark UI executor metrics and task failure stack traces. The scenario instead tests “A SQL statement performs poorly but execution succeeds”; the relevant result is The dominant operator and data movement are identified.

C:

The event log names the flow and cause of failure would demonstrate the separate action Inspect pipeline event logs for the failed flow and error record, which addresses “A Lakeflow pipeline has a failed update with no obvious notebook stack trace.” It does not verify the requirement “A SQL statement performs poorly but execution succeeds” following Inspect the Query Profile for scan, join and shuffle operators.

Question 889

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. A design review specifies the following target: A job is rejected before execution due to insufficient access privileges. Which action is most appropriate?

  1. Inspect pipeline event logs for the failed flow and error record
  2. Inspect driver logs and the job environment dependency list
  3. Inspect job run failure and relevant UC permission requirements
  4. Inspect the Query Profile for scan, join and shuffle operators

Explanation

Correct Answer

C:

The requested outcome is “A job is rejected before execution due to insufficient access privileges.” Inspect job run failure and relevant UC permission requirements is the matching action; A permission error identifies the missing allowed securable privilege gives observable acceptance evidence.

Incorrect Answers

A:

The alternative Inspect pipeline event logs for the failed flow and error record has a distinct purpose—A Lakeflow pipeline has a failed update with no obvious notebook stack trace. It would not establish the required outcome (A job is rejected before execution due to insufficient access privileges); the necessary verification concerns A permission error identifies the missing allowed securable privilege.

B:

This action solves a different issue: “A Python task raises ImportError only on the production job compute.” Its normal signal is The missing library and runtime mismatch are identified. Here the requested behavior is “A job is rejected before execution due to insufficient access privileges,” so that signal is not sufficient.

D:

The alternative Inspect the Query Profile for scan, join and shuffle operators has a distinct purpose—A SQL statement performs poorly but execution succeeds. It would not establish the required outcome (A job is rejected before execution due to insufficient access privileges); the necessary verification concerns A permission error identifies the missing allowed securable privilege.

Question 890

An on-call engineer must isolate why a nightly ingestion job repeatedly fails. Engineers have applied Inspect job run failure and relevant UC permission requirements. Which result establishes the required behavior: A job is rejected before execution due to insufficient access privileges?

  1. A permission error identifies the missing allowed securable privilege
  2. The OOM stage and memory-intensive operation are identified
  3. The missing library and runtime mismatch are identified
  4. The dominant operator and data movement are identified

Explanation

Correct Answer

A:

A permission error identifies the missing allowed securable privilege is the matching outcome for the implemented control (Inspect job run failure and relevant UC permission requirements) and the stated requirement “A job is rejected before execution due to insufficient access privileges.”

Incorrect Answers

B:

The OOM stage and memory-intensive operation are identified pertains to a different control (Inspect Spark UI executor metrics and task failure stack traces) and a different need (A Spark task fails due to an executor out-of-memory error). It cannot establish that Inspect job run failure and relevant UC permission requirements met the stated goal.

C:

That observation is a valid indicator for “A Python task raises ImportError only on the production job compute” when using Inspect driver logs and the job environment dependency list. The scenario instead tests “A job is rejected before execution due to insufficient access privileges”; the relevant result is A permission error identifies the missing allowed securable privilege.

D:

This signal belongs to the adjacent case “A SQL statement performs poorly but execution succeeds,” whose remedy is Inspect the Query Profile for scan, join and shuffle operators. The observed result for the present requirement is A permission error identifies the missing allowed securable privilege.