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Databricks Databricks-Certified-Data-Engineer-Professional 問題集

試験コード:Databricks-Certified-Data-Engineer-Professional

試験名称:Databricks Certified Data Engineer Professional Exam

最近更新時間:2026-07-01

問題と解答:全250問

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質問 1:
A data engineer needs to productionize a new Spark application written by teammate. This application has numerous external dependencies, including libraries, and requires custom environment variables and Spark configuration parameters to be set. Which two methods will help the data engineer accomplish the task? (Choose two.)
A. Create init scripts on DBFS.
B. Add libraries to compute policies
C. Use secrets in init scripts to store configuration data
D. Install libraries on DBFS
E. Use compute policies to set system properties, environment variables, and Spark configuration parameters.
正解:A,E
解説: (Topexam メンバーにのみ表示されます)

質問 2:
A data engineer and a platform engineer are working together to automate their system tasks. A script needs to be executed outside of Databricks only if a particular daily Databricks job finishes successfully for the day. Databricks CLI command was used to check the last execution of the job. What are the required command options for that task?
A. databricks jobs list-runs --job-id JOB_ID --start-time-to TODAY_MIDNIGHT_EPOCH_MS --active- only
B. databricks jobs list-runs --job-id JOB_ID --start-time-to TODAY_MIDNIGHT_EPOCH_MS -- completed-only
C. databricks jobs list-runs --job-id JOB_ID --start-time-from TODAY_MIDNIGHT_EPOCH_MS -- active-only
D. databricks jobs list-runs --job-id JOB_ID --start-time-from TODAY_MIDNIGHT_EPOCH_MS -- completed-only
正解:D
解説: (Topexam メンバーにのみ表示されます)

質問 3:
A data engineer is configuring Delta Sharing for a Databricks-to-Databricks scenario to optimize read performance. The recipient needs to perform time travel queries and streaming reads on shared sales data. Which configuration will provide the optimal performance while enabling these capabilities?
A. Share tables WITHOUT HISTORY and enable partitioning for better query performance.
B. Share tables WITH HISTORY, ensure tables don't have partitioning enabled, and enable CDF before sharing.
C. Use the open sharing protocol instead of Databricks-to-Databricks sharing for better performance.
D. Share the entire schema WITHOUT HISTORY and rely on recipient-side caching for performance.
正解:B
解説: (Topexam メンバーにのみ表示されます)

質問 4:
A data engineer is configuring a Databricks Asset Bundle to deploy a job with granular permissions.
The requirements are:
- Grant the data-engineers group CAN_MANAGE access to the job.
- Ensure the auditors' group can view the job but not modify/run it.
- Avoid granting unintended permissions to other users/groups.
How should the data engineer deploy the job while meeting the requirements?
A. resources:
jobs:
my-job:
name: data-pipeline
tasks: [...]
job: [...]
permissions:
- group_name: data-engineers
level: CAN_MANAGE
permissions:
- group_name: auditors
level: CAN_VIEW
B. resources:
jobs:
my-job:
name: data-pipeline
tasks: [...]
job_clusters: [...]
permissions:
- group_name: data-engineers
level: CAN_MANAGE
- group_name: auditors
level: CAN_VIEW
C. resources:
jobs:
my-job:
name: data-pipeline
tasks: [...]
job_clusters: [...]
permissions:
- group_name: data-engineers
level: CAN_MANAGE
- group_name: auditors
level: CAN_VIEW
- group_name: admin-team
level: IS_OWNER
D. permissions:
- group_name: data-engineers
level: CAN_MANAGE
- group_name: auditors
level: CAN_VIEW
resources:
jobs:
my-job:
name: data-pipeline
tasks: [...]
job_clusters: [...]
正解:B
解説: (Topexam メンバーにのみ表示されます)

質問 5:
The data engineering team maintains the following code:

Assuming that this code produces logically correct results and the data in the source table has been de-duplicated and validated, which statement describes what will occur when this code is executed?
A. An incremental job will detect if new rows have been written to the silver_customer_sales table; if new rows are detected, all aggregates will be recalculated and used to overwrite the gold_customer_lifetime_sales_summary table.
B. A batch job will update the gold_customer_lifetime_sales_summary table, replacing only those rows that have different values than the current version of the table, using customer_id as the primary key.
C. The silver_customer_sales table will be overwritten by aggregated values calculated from all records in the gold_customer_lifetime_sales_summary table as a batch job.
D. The gold_customer_lifetime_sales_summary table will be overwritten by aggregated values calculated from all records in the silver_customer_sales table as a batch job.
E. An incremental job will leverage running information in the state store to update aggregate values in the gold_customer_lifetime_sales_summary table.
正解:D
解説: (Topexam メンバーにのみ表示されます)

質問 6:
A junior data engineer has been asked to develop a streaming data pipeline with a grouped aggregation using DataFrame df. The pipeline needs to calculate the average humidity and average temperature for each non-overlapping five-minute interval. Incremental state information should be maintained for 10 minutes for late-arriving data.
Streaming DataFrame df has the following schema:
"device_id INT, event_time TIMESTAMP, temp FLOAT, humidity FLOAT"
Code block:

Choose the response that correctly fills in the blank within the code block to complete this task.
A. withWatermark("event_time", "10 minutes")
B. delayWrite("event_time", "10 minutes")
C. slidingWindow("event_time", "10 minutes")
D. awaitArrival("event_time", "10 minutes")
E. await("event_time + `10 minutes'")
正解:A
解説: (Topexam メンバーにのみ表示されます)

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Databricks Certified Data Engineer Professional 認定 Databricks-Certified-Data-Engineer-Professional 試験問題:

1. A data engineer needs to implement column masking for a sensitive column in a Unity Catalog- managed table. The masking logic must dynamically check if users belong to specific groups defined in a separate table (group_access) that maps groups to allowed departments. Which approach should the engineer use to efficiently enforce this requirement?

A) Create a view without selecting the sensitive column.
B) Use a row filter to restrict access based on the user's group.
C) Create a UDF that hardcodes allowed groups and apply it as a column mask.
D) Apply a column mask that references the group_access mapping table in its UDF.


2. Which statement describes integration testing?

A) Validates an application use case
B) Validates behavior of individual elements of your application
C) Validates interactions between subsystems of your application
D) Requires manual intervention
E) Requires an automated testing framework


3. A data engineer deploys a multi-task Databricks job that orchestrates three notebooks. One task intermittently fails with Exit Code 1 but succeeds on retry. The engineer needs to collect detailed logs for the failing attempts, including stdout/stderr and cluster lifecycle context, and share them with the platform team. What steps the data engineer needs to follow using built-in tools?

A) From the job run details page, export the job's logs or configure log delivery; then retrieve the compute driver logs and event logs from the compute details page to correlate stdout/stderr with cluster events.
B) Download worker logs directly from the Spark UI and ignore driver logs, as worker logs contain stdout/stderr for all tasks and cluster events.
C) Export the notebook run results to HTML; this bundle includes complete stdout, stderr, and cluster event history across all tasks.
D) Use the notebook interactive debugger to re-run the entire multi-task job, and capture step- through traces for the failing task.


4. A transactions table has been liquid clustered on the columns product_id, user_id, and event_date. Which operation lacks support for cluster on write?

A) spark.writestream.format('delta').mode('append')
B) spark.write.format('delta').mode('append')
C) CTAS and RTAS statements
D) INSERT INTO operations


5. The business reporting tem requires that data for their dashboards be updated every hour. The total processing time for the pipeline that extracts transforms and load the data for their pipeline runs in 10 minutes.
Assuming normal operating conditions, which configuration will meet their service-level agreement requirements with the lowest cost?

A) Schedule a job to execute the pipeline once an hour on a new job cluster.
B) Schedule a Structured Streaming job with a trigger interval of 60 minutes.
C) Configure a job that executes every time new data lands in a given directory.
D) Schedule a job to execute the pipeline once an hour on a dedicated interactive cluster.


質問と回答:

質問 # 1
正解: D
質問 # 2
正解: C
質問 # 3
正解: A
質問 # 4
正解: A
質問 # 5
正解: A

Databricks-Certified-Data-Engineer-Professional 関連試験
Associate-Developer-Apache-Spark - Databricks Certified Associate Developer for Apache Spark 3.0 Exam
Databricks-Certified-Professional-Data-Engineer-KR - Databricks Certified Professional Data Engineer Exam (Databricks-Certified-Professional-Data-Engineer Korean Version)
Associate-Developer-Apache-Spark-3.5 - Databricks Certified Associate Developer for Apache Spark 3.5 - Python
Databricks-Certified-Professional-Data-Scientist - Databricks Certified Professional Data Scientist Exam
Databricks-Certified-Data-Engineer-Professional-JPN - Databricks Certified Data Engineer Professional Exam (Databricks-Certified-Data-Engineer-Professional日本語版)
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