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Exam Code: Certified Data Engineer Professional

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Databricks Certified Data Engineer Professional Practice Test 1

Question 1

A data platform team manages reusable Databricks production jobs and pipelines in Git. The change request states: The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files. Which implementation best satisfies that requirement?

  1. Read validated parameters from job parameters or environment configuration
  2. Restore the durable checkpoint for the same logical query
  3. Run bundle validation for the chosen target in CI
  4. Define separate targets under `targets` in `databricks.yml`

Explanation

Correct Answer

D:

The requirement concerns “The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files.” The selected operation, Define separate targets under `targets` in `databricks.yml`, is the direct engineering control. Its effect can be checked by confirming: Bundle validation resolves the selected target's workspace and resources.

Incorrect Answers

A:

The alternative Read validated parameters from job parameters or environment configuration has a distinct purpose—An application team needs different configuration values without rewriting Python source code. It would not establish the required outcome (The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files); the necessary verification concerns Bundle validation resolves the selected target's workspace and resources.

B:

The alternative Restore the durable checkpoint for the same logical query has a distinct purpose—A stream restarts at the first offsets and duplicates records after every job rerun. It would not establish the required outcome (The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files); the necessary verification concerns Bundle validation resolves the selected target's workspace and resources.

C:

This action solves a different issue: “Developers need to inspect the effective resource definitions before a production deployment.” Its normal signal is Validation succeeds or pinpoints the invalid resolved bundle configuration. Here the requested behavior is “The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files,” so that signal is not sufficient.

Question 2

A data platform team manages reusable Databricks production jobs and pipelines in Git. A reviewer sees that engineers chose Define separate targets under `targets` in `databricks.yml`. To verify The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files, what should the reviewer observe?

  1. The same packaged code runs with two allowed configuration sets
  2. The streaming table advances without rereading all existing files
  3. Bundle validation resolves the selected target's workspace and resources
  4. Validation succeeds or pinpoints the invalid resolved bundle configuration

Explanation

Correct Answer

C:

The team used Define separate targets under `targets` in `databricks.yml` to fulfill “The same bundle must expose named dev and prod deployment profiles with different workspace settings without changing shared source files.” Observing Bundle validation resolves the selected target's workspace and resources confirms the intended effect in the resulting workload.

Incorrect Answers

A:

The same packaged code runs with two allowed configuration sets pertains to a different control (Read validated parameters from job parameters or environment configuration) and a different need (An application team needs different configuration values without rewriting Python source code). It cannot establish that Define separate targets under `targets` in `databricks.yml` met the stated goal.

B:

The streaming table advances without rereading all existing files pertains to a different control (Use a streaming table backed by the incremental ingestion stream) and a different need (A continuous ingestion target should read new records incrementally using file notifications). It cannot establish that Define separate targets under `targets` in `databricks.yml` met the stated goal.

D:

This signal belongs to the adjacent case “Developers need to inspect the effective resource definitions before a production deployment,” whose remedy is Run bundle validation for the chosen target in CI. The observed result for the present requirement is Bundle validation resolves the selected target's workspace and resources.

Question 3

A data platform team manages reusable Databricks production jobs and pipelines in Git. The current design is incomplete because: A shared job definition must reside outside the main bundle configuration file. Which change addresses it directly?

  1. Use a supported `@dp.table`-style streaming table definition with the streaming DataFrame
  2. Put job YAML under `resources/` and include it from root `databricks.yml`
  3. Read validated parameters from job parameters or environment configuration
  4. Set the selected target's workspace host and authentication settings

Explanation

Correct Answer

B:

The requested outcome is “A shared job definition must reside outside the main bundle configuration file.” Put job YAML under `resources/` and include it from root `databricks.yml` is the matching action; Bundle configuration validation discovers the job through the include glob gives observable acceptance evidence.

Incorrect Answers

A:

Use a supported `@dp.table`-style streaming table definition with the streaming DataFrame is appropriate when “A source needs an append-only streaming target defined in Python”; it would be verified by The pipeline treats the target as a streaming table with incremental progress. It does not directly satisfy “A shared job definition must reside outside the main bundle configuration file,” whose relevant acceptance evidence is Bundle configuration validation discovers the job through the include glob.

C:

Read validated parameters from job parameters or environment configuration is appropriate when “An application team needs different configuration values without rewriting Python source code”; it would be verified by The same packaged code runs with two allowed configuration sets. It does not directly satisfy “A shared job definition must reside outside the main bundle configuration file,” whose relevant acceptance evidence is Bundle configuration validation discovers the job through the include glob.

D:

Set the selected target's workspace host and authentication settings belongs to the separate case “The bundle deploys to the wrong workspace despite using the correct source branch,” where Bundle deployment reports the intended workspace host for that target would be expected. That differs from the condition in this stem: “A shared job definition must reside outside the main bundle configuration file.”

Question 4

A data platform team manages reusable Databricks production jobs and pipelines in Git. A production deployment uses Put job YAML under `resources/` and include it from root `databricks.yml` to address: A shared job definition must reside outside the main bundle configuration file. Which signal should QA check?

  1. The job graph starts publication only after validation succeeds
  2. The deployed target has its expected resource names without editing shared production defaults
  3. The repair or manual run processes the requested date instead of the default
  4. Bundle configuration validation discovers the job through the include glob

Explanation

Correct Answer

D:

Bundle configuration validation discovers the job through the include glob is the matching outcome for the implemented control (Put job YAML under `resources/` and include it from root `databricks.yml`) and the stated requirement “A shared job definition must reside outside the main bundle configuration file.”

Incorrect Answers

A:

That observation is a valid indicator for “Data validation must finish before any downstream publishing task starts” when using Make publishing depend on successful completion of validation. The scenario instead tests “A shared job definition must reside outside the main bundle configuration file”; the relevant result is Bundle configuration validation discovers the job through the include glob.

B:

The deployed target has its expected resource names without editing shared production defaults pertains to a different control (Use a target-specific override for the job resources in the bundle) and a different need (An environment needs a controlled version of the same notebook job with separate resource names). It cannot establish that Put job YAML under `resources/` and include it from root `databricks.yml` met the stated goal.

C:

That observation is a valid indicator for “A job must accept a date override to reprocess an earlier business day” when using Define a job/task parameter and pass the date to the task. The scenario instead tests “A shared job definition must reside outside the main bundle configuration file”; the relevant result is Bundle configuration validation discovers the job through the include glob.

Question 5

A data platform team manages reusable Databricks production jobs and pipelines in Git. The change request states: The bundle deploys to the wrong workspace despite using the correct source branch. Which implementation best satisfies that requirement?

  1. Update the function body with explicit null behavior and add null-input tests
  2. Configure AUTO CDC delete handling with the correct `APPLY AS DELETE WHEN` condition
  3. Set the selected target's workspace host and authentication settings
  4. Put job YAML under `resources/` and include it from root `databricks.yml`

Explanation

Correct Answer

C:

The requested outcome is “The bundle deploys to the wrong workspace despite using the correct source branch.” Set the selected target's workspace host and authentication settings is the matching action; Bundle deployment reports the intended workspace host for that target gives observable acceptance evidence.

Incorrect Answers

A:

Update the function body with explicit null behavior and add null-input tests is appropriate when “A SQL function produces the wrong result for null arguments under business rules”; it would be verified by The tested null and nonnull cases satisfy the documented contract. It does not directly satisfy “The bundle deploys to the wrong workspace despite using the correct source branch,” whose relevant acceptance evidence is Bundle deployment reports the intended workspace host for that target.

B:

The alternative Configure AUTO CDC delete handling with the correct `APPLY AS DELETE WHEN` condition has a distinct purpose—Delete events must remove the current SCD1 record according to a source operation field. It would not establish the required outcome (The bundle deploys to the wrong workspace despite using the correct source branch); the necessary verification concerns Bundle deployment reports the intended workspace host for that target.

D:

Put job YAML under `resources/` and include it from root `databricks.yml` belongs to the separate case “A shared job definition must reside outside the main bundle configuration file,” where Bundle configuration validation discovers the job through the include glob would be expected. That differs from the condition in this stem: “The bundle deploys to the wrong workspace despite using the correct source branch.”

Question 6

A data platform team manages reusable Databricks production jobs and pipelines in Git. Engineers have applied Set the selected target's workspace host and authentication settings. Which result establishes the required behavior: The bundle deploys to the wrong workspace despite using the correct source branch?

  1. The correct branch runs for each tested validation value
  2. Bundle deployment reports the intended workspace host for that target
  3. The deployed target has its expected resource names without editing shared production defaults
  4. The materialized view reflects the correct aggregate after its refresh

Explanation

Correct Answer

B:

Bundle deployment reports the intended workspace host for that target directly measures whether Set the selected target's workspace host and authentication settings achieved the requirement “The bundle deploys to the wrong workspace despite using the correct source branch.” It checks the operating result rather than just a configured resource name.

Incorrect Answers

A:

That observation is a valid indicator for “The workflow must choose different branches based on a numeric validation result” when using Use a Jobs If/else condition task and condition-dependent downstream tasks. The scenario instead tests “The bundle deploys to the wrong workspace despite using the correct source branch”; the relevant result is Bundle deployment reports the intended workspace host for that target.

C:

The deployed target has its expected resource names without editing shared production defaults pertains to a different control (Use a target-specific override for the job resources in the bundle) and a different need (An environment needs a controlled version of the same notebook job with separate resource names). It cannot establish that Set the selected target's workspace host and authentication settings met the stated goal.

D:

This signal belongs to the adjacent case “A daily dashboard needs a recomputed aggregate over upstream data,” whose remedy is Use a materialized view with the desired declarative query. The observed result for the present requirement is Bundle deployment reports the intended workspace host for that target.

Question 7

A data platform team manages reusable Databricks production jobs and pipelines in Git. Production acceptance depends on this condition: Developers need to inspect the effective resource definitions before a production deployment. What should the engineer configure?

  1. Run bundle validation for the chosen target in CI
  2. Put job YAML under `resources/` and include it from root `databricks.yml`
  3. Inspect `DESCRIBE HISTORY` and compare affected versions
  4. Make publishing depend on successful completion of validation

Explanation

Correct Answer

A:

The requirement concerns “Developers need to inspect the effective resource definitions before a production deployment.” The selected operation, Run bundle validation for the chosen target in CI, is the direct engineering control. Its effect can be checked by confirming: Validation succeeds or pinpoints the invalid resolved bundle configuration.

Incorrect Answers

B:

This action solves a different issue: “A shared job definition must reside outside the main bundle configuration file.” Its normal signal is Bundle configuration validation discovers the job through the include glob. Here the requested behavior is “Developers need to inspect the effective resource definitions before a production deployment,” so that signal is not sufficient.

C:

Inspect `DESCRIBE HISTORY` and compare affected versions belongs to the separate case “A table's transaction history is important for diagnosing an accidental overwrite,” where The history identifies the commit operation and version associated with the change would be expected. That differs from the condition in this stem: “Developers need to inspect the effective resource definitions before a production deployment.”

D:

The alternative Make publishing depend on successful completion of validation has a distinct purpose—Data validation must finish before any downstream publishing task starts. It would not establish the required outcome (Developers need to inspect the effective resource definitions before a production deployment); the necessary verification concerns Validation succeeds or pinpoints the invalid resolved bundle configuration.

Question 8

A data platform team manages reusable Databricks production jobs and pipelines in Git. The change record shows Run bundle validation for the chosen target in CI. The acceptance test concerns: Developers need to inspect the effective resource definitions before a production deployment. Which outcome confirms it?

  1. The same import succeeds in a fresh scheduled job run
  2. The deployed target has its expected resource names without editing shared production defaults
  3. Validation succeeds or pinpoints the invalid resolved bundle configuration
  4. The job graph starts publication only after validation succeeds

Explanation

Correct Answer

C:

The team used Run bundle validation for the chosen target in CI to fulfill “Developers need to inspect the effective resource definitions before a production deployment.” Observing Validation succeeds or pinpoints the invalid resolved bundle configuration confirms the intended effect in the resulting workload.

Incorrect Answers

A:

The same import succeeds in a fresh scheduled job run would demonstrate the separate action Install the dependency for the actual job task environment rather than relying on the notebook session, which addresses “A package import works in an interactive notebook but not in the production job.” It does not verify the requirement “Developers need to inspect the effective resource definitions before a production deployment” following Run bundle validation for the chosen target in CI.

B:

That observation is a valid indicator for “An environment needs a controlled version of the same notebook job with separate resource names” when using Use a target-specific override for the job resources in the bundle. The scenario instead tests “Developers need to inspect the effective resource definitions before a production deployment”; the relevant result is Validation succeeds or pinpoints the invalid resolved bundle configuration.

D:

This signal belongs to the adjacent case “Data validation must finish before any downstream publishing task starts,” whose remedy is Make publishing depend on successful completion of validation. The observed result for the present requirement is Validation succeeds or pinpoints the invalid resolved bundle configuration.

Question 9

A data platform team manages reusable Databricks production jobs and pipelines in Git. Production acceptance depends on this condition: An environment needs a controlled version of the same notebook job with separate resource names. What should the engineer configure?

  1. Use a target-specific override for the job resources in the bundle
  2. Put job YAML under `resources/` and include it from root `databricks.yml`
  3. Select an appropriate high-memory serverless task environment if supported
  4. Read validated parameters from job parameters or environment configuration

Explanation

Correct Answer

A:

The requirement concerns “An environment needs a controlled version of the same notebook job with separate resource names.” The selected operation, Use a target-specific override for the job resources in the bundle, is the direct engineering control. Its effect can be checked by confirming: The deployed target has its expected resource names without editing shared production defaults.

Incorrect Answers

B:

Put job YAML under `resources/` and include it from root `databricks.yml` is appropriate when “A shared job definition must reside outside the main bundle configuration file”; it would be verified by Bundle configuration validation discovers the job through the include glob. It does not directly satisfy “An environment needs a controlled version of the same notebook job with separate resource names,” whose relevant acceptance evidence is The deployed target has its expected resource names without editing shared production defaults.

C:

This action solves a different issue: “A compute-intensive notebook needs additional supported memory while retaining serverless workflow execution.” Its normal signal is The task reports the chosen serverless environment and completes without OOM. Here the requested behavior is “An environment needs a controlled version of the same notebook job with separate resource names,” so that signal is not sufficient.

D:

Read validated parameters from job parameters or environment configuration is appropriate when “An application team needs different configuration values without rewriting Python source code”; it would be verified by The same packaged code runs with two allowed configuration sets. It does not directly satisfy “An environment needs a controlled version of the same notebook job with separate resource names,” whose relevant acceptance evidence is The deployed target has its expected resource names without editing shared production defaults.

Question 10

A data platform team manages reusable Databricks production jobs and pipelines in Git. An auditor must prove the outcome of Use a target-specific override for the job resources in the bundle for this requirement: An environment needs a controlled version of the same notebook job with separate resource names. Which test result is best?

  1. Bundle deployment reports the intended workspace host for that target
  2. The deployed target has its expected resource names without editing shared production defaults
  3. The task reports the chosen serverless environment and completes without OOM
  4. The same import succeeds in a fresh scheduled job run

Explanation

Correct Answer

B:

The deployed target has its expected resource names without editing shared production defaults directly measures whether Use a target-specific override for the job resources in the bundle achieved the requirement “An environment needs a controlled version of the same notebook job with separate resource names.” It checks the operating result rather than just a configured resource name.

Incorrect Answers

A:

This signal belongs to the adjacent case “The bundle deploys to the wrong workspace despite using the correct source branch,” whose remedy is Set the selected target's workspace host and authentication settings. The observed result for the present requirement is The deployed target has its expected resource names without editing shared production defaults.

C:

That observation is a valid indicator for “A compute-intensive notebook needs additional supported memory while retaining serverless workflow execution” when using Select an appropriate high-memory serverless task environment if supported. The scenario instead tests “An environment needs a controlled version of the same notebook job with separate resource names”; the relevant result is The deployed target has its expected resource names without editing shared production defaults.

D:

This signal belongs to the adjacent case “A package import works in an interactive notebook but not in the production job,” whose remedy is Install the dependency for the actual job task environment rather than relying on the notebook session. The observed result for the present requirement is The deployed target has its expected resource names without editing shared production defaults.