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Certified Data Engineer Associate Practice Test 8

Question 70

An engineer needs to process the backlog of available JSON files and stop compute after the current micro-batches finish.

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

  1. Two consecutive runs with an unchanged checkpoint do not replay the previous source backlog.
  2. The job processes the available backlog and reaches a completed state without a permanently active stream.
  3. An invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy.
  4. An authorized principal reads the staged file using its volume path while unauthorized principals are denied.

Explanation

Correct Answer

B:

Available-now processing applies incremental streaming logic to currently available data while allowing the run to terminate.

Incorrect Answers

A:

Two consecutive runs with an unchanged checkpoint do not replay the previous source backlog. That finding does not establish that the job processes the available backlog and reaches a completed state without a permanently active stream.

C:

An invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy. That finding does not establish that the job processes the available backlog and reaches a completed state without a permanently active stream.

D:

An authorized principal reads the staged file using its volume path while unauthorized principals are denied. That finding does not establish that the job processes the available backlog and reaches a completed state without a permanently active stream.

Question 71

A nightly file ingestion is safe on its first run, but a second execution appends the same records again because the engineer changed the checkpoint path.

Which implementation decision best addresses this requirement?

  1. Capture source-file provenance using supported file metadata available during ingestion.
  2. Apply a supported input path or glob filter to the file-ingestion source.
  3. Select an available Lakeflow Connect managed connector for that enterprise source.
  4. Keep the same checkpoint for repeated executions of the same logical Auto Loader stream.

Explanation

Correct Answer

D:

Changing the checkpoint path creates a new stream identity and can cause already seen files to be processed again. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

File lineage helps identify bad source batches without relying only on destination row timestamps.

B:

Source filtering constrains discovery to eligible objects rather than cleaning unwanted paths after they are inserted.

C:

Managed connectors can package source-specific authentication, extraction and incremental loading workflows.

Question 72

A nightly file ingestion is safe on its first run, but a second execution appends the same records again because the engineer changed the checkpoint path.

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

  1. A suspicious bronze record can be traced to the exact object-storage input path.
  2. Temporary staging objects are skipped while matching daily export files are loaded.
  3. Two consecutive runs with an unchanged checkpoint do not replay the previous source backlog.
  4. New and updated source records land through the configured ingestion pipeline without custom polling notebooks.

Explanation

Correct Answer

C:

Changing the checkpoint path creates a new stream identity and can cause already seen files to be processed again.

Incorrect Answers

A:

A suspicious bronze record can be traced to the exact object-storage input path. That finding does not establish that two consecutive runs with an unchanged checkpoint do not replay the previous source backlog.

B:

Temporary staging objects are skipped while matching daily export files are loaded. That finding does not establish that two consecutive runs with an unchanged checkpoint do not replay the previous source backlog.

D:

New and updated source records land through the configured ingestion pipeline without custom polling notebooks. That finding does not establish that two consecutive runs with an unchanged checkpoint do not replay the previous source backlog.

Question 73

A support dataset needs traceability to the cloud file from which each bronze record came.

Which implementation decision best addresses this requirement?

  1. Capture source-file provenance using supported file metadata available during ingestion.
  2. Configure an appropriate corrupt-record handling path or parsing mode for genuinely malformed JSON.
  3. Grant the necessary Unity Catalog storage access and target-table permissions to the executing identity.
  4. Use a source-specific CDC-capable ingestion approach and apply changes to the destination with correct ordering and keys.

Explanation

Correct Answer

A:

File lineage helps identify bad source batches without relying only on destination row timestamps. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

B:

Corrupt parsing input is a different problem from ordinary type mismatches handled through rescued data.

C:

Interactive browsing does not imply that the SQL warehouse or job principal can read the protected external location.

D:

Append-only loading does not by itself reconcile updated and deleted source records into a current-state table.

Question 74

A support dataset needs traceability to the cloud file from which each bronze record came.

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

  1. An invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy.
  2. COPY INTO runs under the intended identity and reads the source only after approved privileges are granted.
  3. A suspicious bronze record can be traced to the exact object-storage input path.
  4. An updated source row changes in the target and a source deletion is reflected according to the CDC contract.

Explanation

Correct Answer

C:

File lineage helps identify bad source batches without relying only on destination row timestamps.

Incorrect Answers

A:

An invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy. That finding does not establish that a suspicious bronze record can be traced to the exact object-storage input path.

B:

COPY INTO runs under the intended identity and reads the source only after approved privileges are granted. That finding does not establish that a suspicious bronze record can be traced to the exact object-storage input path.

D:

An updated source row changes in the target and a source deletion is reflected according to the CDC contract. That finding does not establish that a suspicious bronze record can be traced to the exact object-storage input path.

Question 75

A partner sends partially truncated JSON lines, and the engineering team must capture malformed documents instead of treating them as typed-schema changes.

Which implementation decision best addresses this requirement?

  1. Apply a supported input path or glob filter to the file-ingestion source.
  2. Configure an appropriate corrupt-record handling path or parsing mode for genuinely malformed JSON.
  3. Store staged input files in a suitably governed Unity Catalog volume.
  4. Use standard file ingestion with Auto Loader or COPY INTO under Unity Catalog governance.

Explanation

Correct Answer

B:

Corrupt parsing input is a different problem from ordinary type mismatches handled through rescued data. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

Source filtering constrains discovery to eligible objects rather than cleaning unwanted paths after they are inserted.

C:

Volumes provide governed file storage semantics suitable for staging non-tabular files.

D:

SQL and Spark file readers offer flexible handling for cloud objects without an unnecessary managed SaaS connector.

Question 76

A partner sends partially truncated JSON lines, and the engineering team must capture malformed documents instead of treating them as typed-schema changes.

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

  1. Temporary staging objects are skipped while matching daily export files are loaded.
  2. An authorized principal reads the staged file using its volume path while unauthorized principals are denied.
  3. Files ingest into the intended governed Delta table with source parsing options under engineering control.
  4. An invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy.

Explanation

Correct Answer

D:

Corrupt parsing input is a different problem from ordinary type mismatches handled through rescued data.

Incorrect Answers

A:

Temporary staging objects are skipped while matching daily export files are loaded. That finding does not establish that an invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy.

B:

An authorized principal reads the staged file using its volume path while unauthorized principals are denied. That finding does not establish that an invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy.

C:

Files ingest into the intended governed Delta table with source parsing options under engineering control. That finding does not establish that an invalid JSON document is flagged for inspection while valid files continue under the selected error-handling policy.

Question 77

A central ingestion job should read files only from paths ending in the configured daily export pattern, not temporary files in the same prefix.

Which implementation decision best addresses this requirement?

  1. Grant the necessary Unity Catalog storage access and target-table permissions to the executing identity.
  2. Apply a supported input path or glob filter to the file-ingestion source.
  3. Select an available Lakeflow Connect managed connector for that enterprise source.
  4. Configure a centrally governed connection and the managed connector's supported authentication controls.

Explanation

Correct Answer

B:

Source filtering constrains discovery to eligible objects rather than cleaning unwanted paths after they are inserted. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

Interactive browsing does not imply that the SQL warehouse or job principal can read the protected external location.

C:

Managed connectors can package source-specific authentication, extraction and incremental loading workflows.

D:

Centralized connection management separates secrets and source access from individual notebook source code.

Question 78

A central ingestion job should read files only from paths ending in the configured daily export pattern, not temporary files in the same prefix.

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

  1. Temporary staging objects are skipped while matching daily export files are loaded.
  2. COPY INTO runs under the intended identity and reads the source only after approved privileges are granted.
  3. New and updated source records land through the configured ingestion pipeline without custom polling notebooks.
  4. The connector continues to ingest after approved credential rotation without editing application notebooks.

Explanation

Correct Answer

A:

Source filtering constrains discovery to eligible objects rather than cleaning unwanted paths after they are inserted.

Incorrect Answers

B:

COPY INTO runs under the intended identity and reads the source only after approved privileges are granted. That finding does not establish that temporary staging objects are skipped while matching daily export files are loaded.

C:

New and updated source records land through the configured ingestion pipeline without custom polling notebooks. That finding does not establish that temporary staging objects are skipped while matching daily export files are loaded.

D:

The connector continues to ingest after approved credential rotation without editing application notebooks. That finding does not establish that temporary staging objects are skipped while matching daily export files are loaded.

Question 79

A notebook can list an S3 source folder in the browser, but COPY INTO fails because the execution principal lacks storage authorization.

Which implementation decision best addresses this requirement?

  1. Store staged input files in a suitably governed Unity Catalog volume.
  2. Use a source-specific CDC-capable ingestion approach and apply changes to the destination with correct ordering and keys.
  3. Grant the necessary Unity Catalog storage access and target-table permissions to the executing identity.
  4. Use a supported Spark JDBC reader from authorized compute and write the result to a governed Delta table.

Explanation

Correct Answer

C:

Interactive browsing does not imply that the SQL warehouse or job principal can read the protected external location. The selected implementation is the one directly aligned with the constraints in the scenario.

Incorrect Answers

A:

Volumes provide governed file storage semantics suitable for staging non-tabular files.

B:

Append-only loading does not by itself reconcile updated and deleted source records into a current-state table.

D:

JDBC ingestion fits structured relational sources when a custom bounded extract is appropriate.

Question 80

A notebook can list an S3 source folder in the browser, but COPY INTO fails because the execution principal lacks storage authorization.

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

  1. COPY INTO runs under the intended identity and reads the source only after approved privileges are granted.
  2. An authorized principal reads the staged file using its volume path while unauthorized principals are denied.
  3. An updated source row changes in the target and a source deletion is reflected according to the CDC contract.
  4. The scheduled notebook retrieves only the authorized reference rows and writes a consistent refreshed target.

Explanation

Correct Answer

A:

Interactive browsing does not imply that the SQL warehouse or job principal can read the protected external location.

Incorrect Answers

B:

An authorized principal reads the staged file using its volume path while unauthorized principals are denied. That finding does not establish that cOPY INTO runs under the intended identity and reads the source only after approved privileges are granted.

C:

An updated source row changes in the target and a source deletion is reflected according to the CDC contract. That finding does not establish that cOPY INTO runs under the intended identity and reads the source only after approved privileges are granted.

D:

The scheduled notebook retrieves only the authorized reference rows and writes a consistent refreshed target. That finding does not establish that cOPY INTO runs under the intended identity and reads the source only after approved privileges are granted.

Certified Data Engineer Associate Practice Tests

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