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NEW QUESTION 38
A data engineer has written the following query:
1. SELECT *
2. FROM json.`/path/to/json/file.json`;
The data engineer asks a colleague for help to convert this query for use in a Delta Live Tables (DLT)
pipeline. The query should create the first table in the DLT pipeline.
Which of the following describes the change the colleague needs to make to the query?
- A. They need to add the cloud_files(...) wrapper to the JSON file path
- B. They need to add a COMMENT line at the beginning of the query
- C. They need to add a CREATE DELTA LIVE TABLE table_name AS line at the beginning of the query
- D. They need to add a live. prefix prior to json. in the FROM line
- E. They need to add a CREATE LIVE TABLE table_name AS line at the beginning of the query
Answer: E
NEW QUESTION 39
A data engineer is designing a data pipeline. The source system generates files in a shared directory that is also
used by other processes. As a result, the files should be kept as is and will accumulate in the directory. The
data engineer needs to identify which files are new since the previous run in the pipeline, and set up the
pipeline to only ingest those new files with each run.
Which of the following tools can the data engineer use to solve this problem?
- A. Delta Lake
- B. Databricks SQL
- C. Auto Loader
- D. Unity Catalog
- E. Data Explorer
Answer: C
NEW QUESTION 40
A data engineering team has been using a Databricks SQL query to monitor the performance of an ELT job.
The ELT job is triggered by a specific number of input records being ready to process. The Databricks SQL
query returns the number of minutes since the job's most recent runtime.
Which of the following approaches can enable the data engineering team to be notified if the ELT job has not
been run in an hour?
- A. They can set up an Alert for the query to notify them if the returned value is greater than 60
- B. They can set up an Alert for the accompanying dashboard to notify when it has not re-freshed in 60
minutes - C. They can set up an Alert for the query to notify when the ELT job fails
- D. They can set up an Alert for the accompanying dashboard to notify them if the returned value is greater
than 60 - E. This type of alerting is not possible in Databricks
Answer: A
NEW QUESTION 41
Which of the following statements describes Delta Lake?
- A. Delta Lake is an open format storage layer that delivers reliability, security, and per-formance
- B. Delta Lake is an open format storage layer that processes data
- C. Delta Lake is an open source analytics engine used for big data workloads
- D. Delta Lake is an open source data storage format for distributed data
- E. Delta Lake is an open source platform to help manage the complete machine learning lifecycle
Answer: A
Explanation:
Explanation
Delta Lake
NEW QUESTION 42
A data engineer has ingested data from an external source into a PySpark DataFrame raw_df. They need to
briefly make this data available in SQL for a data analyst to perform a quality assurance check on the data.
Which of the following commands should the data engineer run to make this data available in SQL for only
the remainder of the Spark session?
- A. There is no way to share data between PySpark and SQL
- B. raw_df.createOrReplaceTempView("raw_df")
- C. raw_df.saveAsTable("raw_df")
- D. raw_df.createTable("raw_df")
- E. raw_df.write.save("raw_df")
Answer: B
NEW QUESTION 43
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