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Google Data Engineer Sample Questions:

1. You are planning to use Google's Dataflow SDK to analyze customer data such as displayed below. Your project requirement is to extract only the customer name Passing Certification Exams Made Easy visit - https://www.2PassEasy.com from the data source and then write to an output PCollection.
Tom,555 X street Tim,553 Y street Sam, 111 Z street
Which operation is best suited for the above data processing requirement?

A) Data extraction
B) ParDo
C) Sink API
D) Source API

2. What are all of the BigQuery operations that Google charges for?

A) Storage, queries, and loading data from a file
B) Storage, queries, and exporting data
C) Queries and streaming inserts
D) Storage, queries, and streaming inserts

3. You receive data files in CSV format monthly from a third party. You need to cleanse this data, but every third month the schema of the files changes. Your requirements for implementing these transformations include:
Executing the transformations on a schedule
Enabling non-developer analysts to modify transformations
Providing a graphical tool for designing transformations
What should you do?

A) Help the analysts write a Cloud Dataflow pipeline in Python to perform the transformatio
B) The Python code should be stored in a revision control system and modified as the incoming data's schema changes
C) Load each month's CSV data into BigQuery, and write a SQL query to transform the data to a standard scheme
D) Merge the transformed tables together with a SQL query
E) Use Apache Spark on Cloud Dataproc to infer the schema of the CSV file before creating a Dataframe.Then implement the transformations in Spark SQL before writing the data out to Cloud Storage and loading into BigQuery
F) Use Cloud Dataprep to build and maintain the transformation recipes, and execute them on a scheduled basis

4. You need to choose a database for a new project that has the following requirements:
Fully managed
Able to automatically scale up
Transactionally consistent
Able to scale up to 6 TB
Able to be queried using SQL Which database do you choose?

A) Cloud Bigtable
B) Cloud SQL
C) Cloud Datastore
D) Cloud Spanner

5. Which of the following job types are supported by Cloud Dataproc (select 3 answers)?

A) Hive
B) Pig
C) YARN
D) Spark

Solutions: