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Free Certified Data Engineer Associate Exam Braindumps
Certified Data Engineer Associate Questions 49–56 (page: 8)

Updated On: 7-Apr-2026
Page 8 of 30
PDF with 280 Questions

Which of the following describes a benefit of creating an external table from Parquet rather than CSV when using a CREATE TABLE AS SELECT statement?

  1. Parquet files can be partitioned
  2. CREATE TABLE AS SELECT statements cannot be used on files
  3. Parquet files have a well-defined schema
  4. Parquet files have the ability to be optimized
  5. Parquet files will become Delta tables

Answer(s): C



A data engineer needs to apply custom logic to identify employees with more than 5 years of experience in array column employees in table stores. The custom logic should create a new column exp_employees that is an array of all of the employees with more than 5 years of experience for each row. In order to apply this custom logic at scale, the data engineer wants to use the FILTER higher-order function.

Which of the following code blocks successfully completes this task?






Answer(s): A



A data engineer that is new to using Python needs to create a Python function to add two integers together and return the sum?

Which of the following code blocks can the data engineer use to complete this task?






Answer(s): D



A data engineer is working with two tables. Each of these tables is displayed below in its entirety.



The data engineer runs the following query to join these tables together:



Which of the following will be returned by the above query?






Answer(s): C



A data engineer has developed a data pipeline to ingest data from a JSON source using Auto Loader, but the engineer has not provided any type inference or schema hints in their pipeline. Upon reviewing the data, the data engineer has noticed that all of the columns in the target table are of the string type despite some of the fields only including float or boolean values.

Which of the following describes why Auto Loader inferred all of the columns to be of the string type?

  1. There was a type mismatch between the specific schema and the inferred schema
  2. JSON data is a text-based format
  3. Auto Loader only works with string data
  4. All of the fields had at least one null value
  5. Auto Loader cannot infer the schema of ingested data

Answer(s): B



Which of the following data workloads will utilize a Gold table as its source?

  1. A job that enriches data by parsing its timestamps into a human-readable format
  2. A job that aggregates uncleaned data to create standard summary statistics
  3. A job that cleans data by removing malformatted records
  4. A job that queries aggregated data designed to feed into a dashboard
  5. A job that ingests raw data from a streaming source into the Lakehouse

Answer(s): D



Which of the following statements regarding the relationship between Silver tables and Bronze tables is always true?

  1. Silver tables contain a less refined, less clean view of data than Bronze data.
  2. Silver tables contain aggregates while Bronze data is unaggregated.
  3. Silver tables contain more data than Bronze tables.
  4. Silver tables contain a more refined and cleaner view of data than Bronze tables.
  5. Silver tables contain less data than Bronze tables.

Answer(s): D



A data architect has determined that a table of the following format is necessary:



Which code block is used by SQL DDL command to create an empty Delta table in the above format regardless of whether a table already exists with this name?

  1. CREATE OR REPLACE TABLE table_name ( employeeId STRING, startDate DATE, avgRating FLOAT )
  2. CREATE OR REPLACE TABLE table_name WITH COLUMNS ( employeeId STRING, startDate DATE, avgRating FLOAT ) USING DELTA
  3. CREATE TABLE IF NOT EXISTS table_name ( employeeId STRING, startDate DATE, avgRating FLOAT )
  4. CREATE TABLE table_name AS SELECT employeeId STRING, startDate DATE, avgRating FLOAT

Answer(s): A



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