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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 55

Question 540

An SRE tool queries Databricks Jobs statuses across multiple workspaces. Engineers have applied Grant read/monitor privileges only to the service principal. Which result establishes the required behavior: A monitoring identity should not have permissions to edit production jobs?

  1. The identity reads run status but fails job mutation requests
  2. CLI responses identify the correct production workspace
  3. The response reports the authoritative run lifecycle state
  4. The response identifies pending, running and terminal update states

Explanation

Correct Answer

A:

The team used Grant read/monitor privileges only to the service principal to fulfill “A monitoring identity should not have permissions to edit production jobs.” Observing The identity reads run status but fails job mutation requests confirms the intended effect in the resulting workload.

Incorrect Answers

B:

That observation is a valid indicator for “A CLI script must use a production workspace rather than a developer's default profile” when using Pass the intended Databricks CLI profile or host configuration. The scenario instead tests “A monitoring identity should not have permissions to edit production jobs”; the relevant result is The identity reads run status but fails job mutation requests.

C:

That observation is a valid indicator for “A monitoring script needs the state of a specific current job run” when using Call the supported Jobs API run detail endpoint using its run ID. The scenario instead tests “A monitoring identity should not have permissions to edit production jobs”; the relevant result is The identity reads run status but fails job mutation requests.

D:

The response identifies pending, running and terminal update states would demonstrate the separate action Query the supported pipelines API for update details, which addresses “A nightly dashboard should report active production pipeline update status.” It does not verify the requirement “A monitoring identity should not have permissions to edit production jobs” following Grant read/monitor privileges only to the service principal.

Question 541

A platform monitors several stateful event-processing queries against a latency SLO. The change request states: A stream seems healthy but event processing falls farther behind incoming data. Which implementation best satisfies that requirement?

  1. Inspect streaming state operator metrics and batch execution durations
  2. Inspect watermark position and dropped-late-record progress counters
  3. Compare input rate and processed-rows rate in streaming progress
  4. Correlate batch IDs and sink commit logs across retries

Explanation

Correct Answer

C:

Compare input rate and processed-rows rate in streaming progress addresses the requested condition (“A stream seems healthy but event processing falls farther behind incoming data”) rather than an adjacent platform task. The independent success check is: The arrival rate exceeds processing capacity during the backlog window.

Incorrect Answers

A:

Inspect streaming state operator metrics and batch execution durations belongs to the separate case “A microbatch duration spikes after an increase in state cardinality,” where State rows and processing time increase together for affected batches would be expected. That differs from the condition in this stem: “A stream seems healthy but event processing falls farther behind incoming data.”

B:

Inspect watermark position and dropped-late-record progress counters is appropriate when “Late-data drops rise after a watermark configuration change”; it would be verified by Dropped record count reflects events older than the configured cutoff. It does not directly satisfy “A stream seems healthy but event processing falls farther behind incoming data,” whose relevant acceptance evidence is The arrival rate exceeds processing capacity during the backlog window.

D:

This action solves a different issue: “A streaming sink occasionally retries the same batch after transient errors.” Its normal signal is Repeated batch IDs are visible without duplicate accepted logical records. Here the requested behavior is “A stream seems healthy but event processing falls farther behind incoming data,” so that signal is not sufficient.

Question 542

A platform monitors several stateful event-processing queries against a latency SLO. A reviewer sees that engineers chose Compare input rate and processed-rows rate in streaming progress. To verify A stream seems healthy but event processing falls farther behind incoming data, what should the reviewer observe?

  1. The arrival rate exceeds processing capacity during the backlog window
  2. Dropped record count reflects events older than the configured cutoff
  3. The restarted source offset starts after prior committed progress
  4. Repeated batch IDs are visible without duplicate accepted logical records

Explanation

Correct Answer

A:

The team used Compare input rate and processed-rows rate in streaming progress to fulfill “A stream seems healthy but event processing falls farther behind incoming data.” Observing The arrival rate exceeds processing capacity during the backlog window confirms the intended effect in the resulting workload.

Incorrect Answers

B:

Dropped record count reflects events older than the configured cutoff would demonstrate the separate action Inspect watermark position and dropped-late-record progress counters, which addresses “Late-data drops rise after a watermark configuration change.” It does not verify the requirement “A stream seems healthy but event processing falls farther behind incoming data” following Compare input rate and processed-rows rate in streaming progress.

C:

The restarted source offset starts after prior committed progress would demonstrate the separate action Compare before/after checkpointed offsets and processing progress, which addresses “A query restarts and must be proven to resume from its prior committed offset.” It does not verify the requirement “A stream seems healthy but event processing falls farther behind incoming data” following Compare input rate and processed-rows rate in streaming progress.

D:

Repeated batch IDs are visible without duplicate accepted logical records pertains to a different control (Correlate batch IDs and sink commit logs across retries) and a different need (A streaming sink occasionally retries the same batch after transient errors). It cannot establish that Compare input rate and processed-rows rate in streaming progress met the stated goal.

Question 543

A platform monitors several stateful event-processing queries against a latency SLO. The change request states: A microbatch duration spikes after an increase in state cardinality. Which implementation best satisfies that requirement?

  1. Correlate batch IDs and sink commit logs across retries
  2. Compare before/after checkpointed offsets and processing progress
  3. Inspect streaming state operator metrics and batch execution durations
  4. Compare input rate and processed-rows rate in streaming progress

Explanation

Correct Answer

C:

Inspect streaming state operator metrics and batch execution durations addresses the requested condition (“A microbatch duration spikes after an increase in state cardinality”) rather than an adjacent platform task. The independent success check is: State rows and processing time increase together for affected batches.

Incorrect Answers

A:

The alternative Correlate batch IDs and sink commit logs across retries has a distinct purpose—A streaming sink occasionally retries the same batch after transient errors. It would not establish the required outcome (A microbatch duration spikes after an increase in state cardinality); the necessary verification concerns State rows and processing time increase together for affected batches.

B:

Compare before/after checkpointed offsets and processing progress belongs to the separate case “A query restarts and must be proven to resume from its prior committed offset,” where The restarted source offset starts after prior committed progress would be expected. That differs from the condition in this stem: “A microbatch duration spikes after an increase in state cardinality.”

D:

Compare input rate and processed-rows rate in streaming progress belongs to the separate case “A stream seems healthy but event processing falls farther behind incoming data,” where The arrival rate exceeds processing capacity during the backlog window would be expected. That differs from the condition in this stem: “A microbatch duration spikes after an increase in state cardinality.”

Question 544

A platform monitors several stateful event-processing queries against a latency SLO. Following Inspect streaming state operator metrics and batch execution durations, the incident team needs evidence that A microbatch duration spikes after an increase in state cardinality. Which observation supports closure?

  1. State rows and processing time increase together for affected batches
  2. Dropped record count reflects events older than the configured cutoff
  3. The restarted source offset starts after prior committed progress
  4. Repeated batch IDs are visible without duplicate accepted logical records

Explanation

Correct Answer

A:

State rows and processing time increase together for affected batches is the matching outcome for the implemented control (Inspect streaming state operator metrics and batch execution durations) and the stated requirement “A microbatch duration spikes after an increase in state cardinality.”

Incorrect Answers

B:

Dropped record count reflects events older than the configured cutoff pertains to a different control (Inspect watermark position and dropped-late-record progress counters) and a different need (Late-data drops rise after a watermark configuration change). It cannot establish that Inspect streaming state operator metrics and batch execution durations met the stated goal.

C:

That observation is a valid indicator for “A query restarts and must be proven to resume from its prior committed offset” when using Compare before/after checkpointed offsets and processing progress. The scenario instead tests “A microbatch duration spikes after an increase in state cardinality”; the relevant result is State rows and processing time increase together for affected batches.

D:

Repeated batch IDs are visible without duplicate accepted logical records pertains to a different control (Correlate batch IDs and sink commit logs across retries) and a different need (A streaming sink occasionally retries the same batch after transient errors). It cannot establish that Inspect streaming state operator metrics and batch execution durations met the stated goal.

Question 545

A platform monitors several stateful event-processing queries against a latency SLO. The change request states: Late-data drops rise after a watermark configuration change. Which implementation best satisfies that requirement?

  1. Inspect streaming state operator metrics and batch execution durations
  2. Compare before/after checkpointed offsets and processing progress
  3. Correlate batch IDs and sink commit logs across retries
  4. Inspect watermark position and dropped-late-record progress counters

Explanation

Correct Answer

D:

The requirement concerns “Late-data drops rise after a watermark configuration change.” The selected operation, Inspect watermark position and dropped-late-record progress counters, is the direct engineering control. Its effect can be checked by confirming: Dropped record count reflects events older than the configured cutoff.

Incorrect Answers

A:

Inspect streaming state operator metrics and batch execution durations belongs to the separate case “A microbatch duration spikes after an increase in state cardinality,” where State rows and processing time increase together for affected batches would be expected. That differs from the condition in this stem: “Late-data drops rise after a watermark configuration change.”

B:

Compare before/after checkpointed offsets and processing progress belongs to the separate case “A query restarts and must be proven to resume from its prior committed offset,” where The restarted source offset starts after prior committed progress would be expected. That differs from the condition in this stem: “Late-data drops rise after a watermark configuration change.”

C:

This action solves a different issue: “A streaming sink occasionally retries the same batch after transient errors.” Its normal signal is Repeated batch IDs are visible without duplicate accepted logical records. Here the requested behavior is “Late-data drops rise after a watermark configuration change,” so that signal is not sufficient.

Question 546

A platform monitors several stateful event-processing queries against a latency SLO. The team implements Inspect watermark position and dropped-late-record progress counters. The goal was: Late-data drops rise after a watermark configuration change. Which observed result best verifies success?

  1. Dropped record count reflects events older than the configured cutoff
  2. Repeated batch IDs are visible without duplicate accepted logical records
  3. State rows and processing time increase together for affected batches
  4. The restarted source offset starts after prior committed progress

Explanation

Correct Answer

A:

Dropped record count reflects events older than the configured cutoff is the matching outcome for the implemented control (Inspect watermark position and dropped-late-record progress counters) and the stated requirement “Late-data drops rise after a watermark configuration change.”

Incorrect Answers

B:

This signal belongs to the adjacent case “A streaming sink occasionally retries the same batch after transient errors,” whose remedy is Correlate batch IDs and sink commit logs across retries. The observed result for the present requirement is Dropped record count reflects events older than the configured cutoff.

C:

That observation is a valid indicator for “A microbatch duration spikes after an increase in state cardinality” when using Inspect streaming state operator metrics and batch execution durations. The scenario instead tests “Late-data drops rise after a watermark configuration change”; the relevant result is Dropped record count reflects events older than the configured cutoff.

D:

That observation is a valid indicator for “A query restarts and must be proven to resume from its prior committed offset” when using Compare before/after checkpointed offsets and processing progress. The scenario instead tests “Late-data drops rise after a watermark configuration change”; the relevant result is Dropped record count reflects events older than the configured cutoff.

Question 547

A platform monitors several stateful event-processing queries against a latency SLO. An incident review prioritizes one requirement: A streaming sink occasionally retries the same batch after transient errors. What is the most defensible remedy?

  1. Inspect watermark position and dropped-late-record progress counters
  2. Compare input rate and processed-rows rate in streaming progress
  3. Correlate batch IDs and sink commit logs across retries
  4. Inspect streaming state operator metrics and batch execution durations

Explanation

Correct Answer

C:

Correlate batch IDs and sink commit logs across retries addresses the requested condition (“A streaming sink occasionally retries the same batch after transient errors”) rather than an adjacent platform task. The independent success check is: Repeated batch IDs are visible without duplicate accepted logical records.

Incorrect Answers

A:

Inspect watermark position and dropped-late-record progress counters is appropriate when “Late-data drops rise after a watermark configuration change”; it would be verified by Dropped record count reflects events older than the configured cutoff. It does not directly satisfy “A streaming sink occasionally retries the same batch after transient errors,” whose relevant acceptance evidence is Repeated batch IDs are visible without duplicate accepted logical records.

B:

This action solves a different issue: “A stream seems healthy but event processing falls farther behind incoming data.” Its normal signal is The arrival rate exceeds processing capacity during the backlog window. Here the requested behavior is “A streaming sink occasionally retries the same batch after transient errors,” so that signal is not sufficient.

D:

The alternative Inspect streaming state operator metrics and batch execution durations has a distinct purpose—A microbatch duration spikes after an increase in state cardinality. It would not establish the required outcome (A streaming sink occasionally retries the same batch after transient errors); the necessary verification concerns Repeated batch IDs are visible without duplicate accepted logical records.

Question 548

A platform monitors several stateful event-processing queries against a latency SLO. A production deployment uses Correlate batch IDs and sink commit logs across retries to address: A streaming sink occasionally retries the same batch after transient errors. Which signal should QA check?

  1. Dropped record count reflects events older than the configured cutoff
  2. Repeated batch IDs are visible without duplicate accepted logical records
  3. The arrival rate exceeds processing capacity during the backlog window
  4. State rows and processing time increase together for affected batches

Explanation

Correct Answer

B:

Repeated batch IDs are visible without duplicate accepted logical records is the matching outcome for the implemented control (Correlate batch IDs and sink commit logs across retries) and the stated requirement “A streaming sink occasionally retries the same batch after transient errors.”

Incorrect Answers

A:

Dropped record count reflects events older than the configured cutoff pertains to a different control (Inspect watermark position and dropped-late-record progress counters) and a different need (Late-data drops rise after a watermark configuration change). It cannot establish that Correlate batch IDs and sink commit logs across retries met the stated goal.

C:

That observation is a valid indicator for “A stream seems healthy but event processing falls farther behind incoming data” when using Compare input rate and processed-rows rate in streaming progress. The scenario instead tests “A streaming sink occasionally retries the same batch after transient errors”; the relevant result is Repeated batch IDs are visible without duplicate accepted logical records.

D:

State rows and processing time increase together for affected batches pertains to a different control (Inspect streaming state operator metrics and batch execution durations) and a different need (A microbatch duration spikes after an increase in state cardinality). It cannot establish that Correlate batch IDs and sink commit logs across retries met the stated goal.

Question 549

A platform monitors several stateful event-processing queries against a latency SLO. The engineering team must satisfy this constraint: A query restarts and must be proven to resume from its prior committed offset. Select the best technical action.

  1. Correlate batch IDs and sink commit logs across retries
  2. Inspect streaming state operator metrics and batch execution durations
  3. Compare before/after checkpointed offsets and processing progress
  4. Inspect watermark position and dropped-late-record progress counters

Explanation

Correct Answer

C:

The requested outcome is “A query restarts and must be proven to resume from its prior committed offset.” Compare before/after checkpointed offsets and processing progress is the matching action; The restarted source offset starts after prior committed progress gives observable acceptance evidence.

Incorrect Answers

A:

Correlate batch IDs and sink commit logs across retries belongs to the separate case “A streaming sink occasionally retries the same batch after transient errors,” where Repeated batch IDs are visible without duplicate accepted logical records would be expected. That differs from the condition in this stem: “A query restarts and must be proven to resume from its prior committed offset.”

B:

Inspect streaming state operator metrics and batch execution durations is appropriate when “A microbatch duration spikes after an increase in state cardinality”; it would be verified by State rows and processing time increase together for affected batches. It does not directly satisfy “A query restarts and must be proven to resume from its prior committed offset,” whose relevant acceptance evidence is The restarted source offset starts after prior committed progress.

D:

The alternative Inspect watermark position and dropped-late-record progress counters has a distinct purpose—Late-data drops rise after a watermark configuration change. It would not establish the required outcome (A query restarts and must be proven to resume from its prior committed offset); the necessary verification concerns The restarted source offset starts after prior committed progress.

Question 550

A platform monitors several stateful event-processing queries against a latency SLO. After configuring Compare before/after checkpointed offsets and processing progress, the engineer must validate: A query restarts and must be proven to resume from its prior committed offset. What evidence is decisive?

  1. State rows and processing time increase together for affected batches
  2. The restarted source offset starts after prior committed progress
  3. The arrival rate exceeds processing capacity during the backlog window
  4. Dropped record count reflects events older than the configured cutoff

Explanation

Correct Answer

B:

The restarted source offset starts after prior committed progress is the matching outcome for the implemented control (Compare before/after checkpointed offsets and processing progress) and the stated requirement “A query restarts and must be proven to resume from its prior committed offset.”

Incorrect Answers

A:

State rows and processing time increase together for affected batches pertains to a different control (Inspect streaming state operator metrics and batch execution durations) and a different need (A microbatch duration spikes after an increase in state cardinality). It cannot establish that Compare before/after checkpointed offsets and processing progress met the stated goal.

C:

That observation is a valid indicator for “A stream seems healthy but event processing falls farther behind incoming data” when using Compare input rate and processed-rows rate in streaming progress. The scenario instead tests “A query restarts and must be proven to resume from its prior committed offset”; the relevant result is The restarted source offset starts after prior committed progress.

D:

Dropped record count reflects events older than the configured cutoff would demonstrate the separate action Inspect watermark position and dropped-late-record progress counters, which addresses “Late-data drops rise after a watermark configuration change.” It does not verify the requirement “A query restarts and must be proven to resume from its prior committed offset” following Compare before/after checkpointed offsets and processing progress.