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Certified Data Engineer Associate Practice Test 3

Question 20

A new team confuses a Databricks workspace with Unity Catalog and stores every access decision in individual notebook files.

Which acceptance result most directly demonstrates that the intended solution works?

  1. A reader can run SELECT but cannot insert rows or change table ownership.
  2. The small lookup query runs on supported SQL compute while the larger Spark workload executes independently.
  3. Two different SQL warehouses read the same governed catalog table with consistent permissions and values.
  4. Users with notebook access but no table privileges still cannot query protected datasets.

Explanation

Correct Answer

D:

Workspace assets and data-governance objects have different scopes; notebook sharing is not a substitute for object privileges.

Incorrect Answers

A:

A reader can run SELECT but cannot insert rows or change table ownership. That finding does not establish that users with notebook access but no table privileges still cannot query protected datasets.

B:

The small lookup query runs on supported SQL compute while the larger Spark workload executes independently. That finding does not establish that users with notebook access but no table privileges still cannot query protected datasets.

C:

Two different SQL warehouses read the same governed catalog table with consistent permissions and values. That finding does not establish that users with notebook access but no table privileges still cannot query protected datasets.

Question 21

A warehouse team expects SELECT permission on a Delta table to let consumers change table metadata and write records.

Which implementation decision best addresses this requirement?

  1. Use Delta Lake time travel against an available prior table version or timestamp.
  2. Use Unity Catalog identities and grants, backed by centrally governed storage access.
  3. Grant the specific read privileges and only separately authorize data modification or object ownership.
  4. Choose compute with autoscaling or automatic termination options suitable for intermittent interactive use.

Explanation

Correct Answer

C:

Reading governed data and modifying governed data are distinct operations enforced by Unity Catalog permissions. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

Delta history enables repeatable access to retained transactional snapshots and does not depend on overwriting the latest table manually.

B:

Central identity-aware data governance is safer and more maintainable than distributing underlying cloud credentials to notebooks.

D:

Idle all-purpose compute can accrue cost; appropriate lifecycle configuration reduces waste without changing governed data storage.

Question 22

A warehouse team expects SELECT permission on a Delta table to let consumers change table metadata and write records.

Which acceptance result most directly demonstrates that the intended solution works?

  1. A reader can run SELECT but cannot insert rows or change table ownership.
  2. A query pinned to a retained earlier version returns the expected pre-update records.
  3. Revoking group access prevents subsequent table queries without changing credentials embedded in source code.
  4. Compute stops after the configured idle period and restarts for an authorized development session.

Explanation

Correct Answer

A:

Reading governed data and modifying governed data are distinct operations enforced by Unity Catalog permissions.

Incorrect Answers

B:

A query pinned to a retained earlier version returns the expected pre-update records. That finding does not establish that a reader can run SELECT but cannot insert rows or change table ownership.

C:

Revoking group access prevents subsequent table queries without changing credentials embedded in source code. That finding does not establish that a reader can run SELECT but cannot insert rows or change table ownership.

D:

Compute stops after the configured idle period and restarts for an authorized development session. That finding does not establish that a reader can run SELECT but cannot insert rows or change table ownership.

Question 23

A product team wants to recover a previous consistent view of a Delta table after an accidental update, subject to retained history.

Which implementation decision best addresses this requirement?

  1. Use appropriate compute and Delta Lake table formats without forcing all workloads into one dedicated persistent cluster.
  2. Deploy notebooks or other tasks through Lakeflow Jobs for scheduled production execution.
  3. Use Delta Lake time travel against an available prior table version or timestamp.
  4. Use a properly sized SQL warehouse with concurrency features suited to the dashboard workload.

Explanation

Correct Answer

C:

Delta history enables repeatable access to retained transactional snapshots and does not depend on overwriting the latest table manually. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

The Databricks platform separates storage and compute, permitting specialized execution resources over shared governed tables.

B:

A notebook is an authoring and interactive execution surface, while jobs orchestrate repeatable unattended runs.

D:

Dedicated SQL serving isolates analytical query capacity from arbitrary notebook workloads and permits workload-specific sizing.

Question 24

A product team wants to recover a previous consistent view of a Delta table after an accidental update, subject to retained history.

Which acceptance result most directly demonstrates that the intended solution works?

  1. The small lookup query runs on supported SQL compute while the larger Spark workload executes independently.
  2. A query pinned to a retained earlier version returns the expected pre-update records.
  3. The production workflow completes at its trigger when the notebook author is logged out.
  4. A concurrency test confirms dashboard response times remain within targets during unrelated notebook development activity.

Explanation

Correct Answer

B:

Delta history enables repeatable access to retained transactional snapshots and does not depend on overwriting the latest table manually.

Incorrect Answers

A:

The small lookup query runs on supported SQL compute while the larger Spark workload executes independently. That finding does not establish that a query pinned to a retained earlier version returns the expected pre-update records.

C:

The production workflow completes at its trigger when the notebook author is logged out. That finding does not establish that a query pinned to a retained earlier version returns the expected pre-update records.

D:

A concurrency test confirms dashboard response times remain within targets during unrelated notebook development activity. That finding does not establish that a query pinned to a retained earlier version returns the expected pre-update records.

Question 25

An analyst repeatedly reads a small dimension table while transformations write large event partitions in object storage.

Which implementation decision best addresses this requirement?

  1. Use Unity Catalog identities and grants, backed by centrally governed storage access.
  2. Keep curated Delta tables as centrally governed datasets and choose appropriate execution compute separately.
  3. Use a Databricks SQL warehouse for governed SQL analytics rather than a manually managed all-purpose cluster.
  4. Use appropriate compute and Delta Lake table formats without forcing all workloads into one dedicated persistent cluster.

Explanation

Correct Answer

D:

The Databricks platform separates storage and compute, permitting specialized execution resources over shared governed tables. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

Central identity-aware data governance is safer and more maintainable than distributing underlying cloud credentials to notebooks.

B:

Storage-compute separation avoids unnecessary duplication and lets multiple compute resources query the same logical tables.

C:

SQL warehouses are purpose-built SQL compute and can be configured for serverless operation while separating query execution from cluster administration.

Question 26

An analyst repeatedly reads a small dimension table while transformations write large event partitions in object storage.

Which acceptance result most directly demonstrates that the intended solution works?

  1. Revoking group access prevents subsequent table queries without changing credentials embedded in source code.
  2. The small lookup query runs on supported SQL compute while the larger Spark workload executes independently.
  3. Two different SQL warehouses read the same governed catalog table with consistent permissions and values.
  4. Analysts run the required SQL against Unity Catalog tables through a warehouse and its cost can be attributed to the team.

Explanation

Correct Answer

B:

The Databricks platform separates storage and compute, permitting specialized execution resources over shared governed tables.

Incorrect Answers

A:

Revoking group access prevents subsequent table queries without changing credentials embedded in source code. That finding does not establish that the small lookup query runs on supported SQL compute while the larger Spark workload executes independently.

C:

Two different SQL warehouses read the same governed catalog table with consistent permissions and values. That finding does not establish that the small lookup query runs on supported SQL compute while the larger Spark workload executes independently.

D:

Analysts run the required SQL against Unity Catalog tables through a warehouse and its cost can be attributed to the team. That finding does not establish that the small lookup query runs on supported SQL compute while the larger Spark workload executes independently.

Question 27

A security administrator wants access to sensitive assets determined by users' groups rather than by sharing local cloud storage keys in every notebook.

Which implementation decision best addresses this requirement?

  1. Use Unity Catalog identities and grants, backed by centrally governed storage access.
  2. Deploy notebooks or other tasks through Lakeflow Jobs for scheduled production execution.
  3. Choose compute with autoscaling or automatic termination options suitable for intermittent interactive use.
  4. Use compatible interactive Databricks compute with the required libraries and workspace notebooks.

Explanation

Correct Answer

A:

Central identity-aware data governance is safer and more maintainable than distributing underlying cloud credentials to notebooks. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

B:

A notebook is an authoring and interactive execution surface, while jobs orchestrate repeatable unattended runs.

C:

Idle all-purpose compute can accrue cost; appropriate lifecycle configuration reduces waste without changing governed data storage.

D:

General interactive compute supports exploratory Python and Spark development; a SQL warehouse is not the default tool for arbitrary notebook PySpark dependencies.

Question 28

A security administrator wants access to sensitive assets determined by users' groups rather than by sharing local cloud storage keys in every notebook.

Which acceptance result most directly demonstrates that the intended solution works?

  1. The production workflow completes at its trigger when the notebook author is logged out.
  2. Compute stops after the configured idle period and restarts for an authorized development session.
  3. Revoking group access prevents subsequent table queries without changing credentials embedded in source code.
  4. Scientists execute the PySpark notebook with the approved libraries while jobs remain isolated from the analyst warehouse.

Explanation

Correct Answer

C:

Central identity-aware data governance is safer and more maintainable than distributing underlying cloud credentials to notebooks.

Incorrect Answers

A:

The production workflow completes at its trigger when the notebook author is logged out. That finding does not establish that revoking group access prevents subsequent table queries without changing credentials embedded in source code.

B:

Compute stops after the configured idle period and restarts for an authorized development session. That finding does not establish that revoking group access prevents subsequent table queries without changing credentials embedded in source code.

D:

Scientists execute the PySpark notebook with the approved libraries while jobs remain isolated from the analyst warehouse. That finding does not establish that revoking group access prevents subsequent table queries without changing credentials embedded in source code.

Question 29

A data analyst confuses Databricks notebooks and Lakeflow Jobs and wants every time-critical production pipeline to depend on a user keeping a notebook open.

Which implementation decision best addresses this requirement?

  1. Deploy notebooks or other tasks through Lakeflow Jobs for scheduled production execution.
  2. Keep curated Delta tables as centrally governed datasets and choose appropriate execution compute separately.
  3. Use a properly sized SQL warehouse with concurrency features suited to the dashboard workload.
  4. Use job-oriented compute or supported serverless jobs compute tied to a scheduled workflow.

Explanation

Correct Answer

A:

A notebook is an authoring and interactive execution surface, while jobs orchestrate repeatable unattended runs. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

B:

Storage-compute separation avoids unnecessary duplication and lets multiple compute resources query the same logical tables.

C:

Dedicated SQL serving isolates analytical query capacity from arbitrary notebook workloads and permits workload-specific sizing.

D:

Task compute is lifecycle-bound to production jobs and avoids idle all-purpose development capacity.

Question 30

A data analyst confuses Databricks notebooks and Lakeflow Jobs and wants every time-critical production pipeline to depend on a user keeping a notebook open.

Which acceptance result most directly demonstrates that the intended solution works?

  1. Two different SQL warehouses read the same governed catalog table with consistent permissions and values.
  2. A concurrency test confirms dashboard response times remain within targets during unrelated notebook development activity.
  3. The nightly task starts at its trigger, finishes successfully, and incurs no unnecessary always-on interactive compute time.
  4. The production workflow completes at its trigger when the notebook author is logged out.

Explanation

Correct Answer

D:

A notebook is an authoring and interactive execution surface, while jobs orchestrate repeatable unattended runs.

Incorrect Answers

A:

Two different SQL warehouses read the same governed catalog table with consistent permissions and values. That finding does not establish that the production workflow completes at its trigger when the notebook author is logged out.

B:

A concurrency test confirms dashboard response times remain within targets during unrelated notebook development activity. That finding does not establish that the production workflow completes at its trigger when the notebook author is logged out.

C:

The nightly task starts at its trigger, finishes successfully, and incurs no unnecessary always-on interactive compute time. That finding does not establish that the production workflow completes at its trigger when the notebook author is logged out.

Certified Data Engineer Associate Practice Tests

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