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Databricks Certification Databricks Certified Data Engineer Professional Exam

Databricks Certified Data Engineer Professional Exam

Last Update Jul 18, 2024
Total Questions : 120

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Questions 4

A data architect has designed a system in which two Structured Streaming jobs will concurrently write to a single bronze Delta table. Each job is subscribing to a different topic from an Apache Kafka source, but they will write data with the same schema. To keep the directory structure simple, a data engineer has decided to nest a checkpoint directory to be shared by both streams.

The proposed directory structure is displayed below:

Which statement describes whether this checkpoint directory structure is valid for the given scenario and why?

Options:

A.  

No; Delta Lake manages streaming checkpoints in the transaction log.

B.  

Yes; both of the streams can share a single checkpoint directory.

C.  

No; only one stream can write to a Delta Lake table.

D.  

Yes; Delta Lake supports infinite concurrent writers.

E.  

No; each of the streams needs to have its own checkpoint directory.

Discussion 0
Questions 5

An upstream system has been configured to pass the date for a given batch of data to the Databricks Jobs API as a parameter. The notebook to be scheduled will use this parameter to load data with the following code:

df = spark.read.format("parquet").load(f"/mnt/source/(date)")

Which code block should be used to create the date Python variable used in the above code block?

Options:

A.  

date = spark.conf.get("date")

B.  

input_dict = input()

date= input_dict["date"]

C.  

import sys

date = sys.argv[1]

D.  

date = dbutils.notebooks.getParam("date")

E.  

dbutils.widgets.text("date", "null")

date = dbutils.widgets.get("date")

Discussion 0
Questions 6

What statement is true regarding the retention of job run history?

Options:

A.  

It is retained until you export or delete job run logs

B.  

It is retained for 30 days, during which time you can deliver job run logs to DBFS or S3

C.  

t is retained for 60 days, during which you can export notebook run results to HTML

D.  

It is retained for 60 days, after which logs are archived

E.  

It is retained for 90 days or until the run-id is re-used through custom run configuration

Discussion 0
Questions 7

A junior data engineer has configured a workload that posts the following JSON to the Databricks REST API endpoint 2.0/jobs/create.

Questions 7

Assuming that all configurations and referenced resources are available, which statement describes the result of executing this workload three times?

Options:

A.  

Three new jobs named "Ingest new data" will be defined in the workspace, and they will each run once daily.

B.  

The logic defined in the referenced notebook will be executed three times on new clusters with the configurations of the provided cluster ID.

C.  

Three new jobs named "Ingest new data" will be defined in the workspace, but no jobs will be executed.

D.  

One new job named "Ingest new data" will be defined in the workspace, but it will not be executed.

E.  

The logic defined in the referenced notebook will be executed three times on the referenced existing all purpose cluster.

Discussion 0
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