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Google Data Engineer Sample Questions:

1. Your company is loading comma-separated values (CSV) files into Google BigQuery. The data is fully imported successfully; however, the imported data is not matching byte-to-byte to the source file. What is the most likely cause of this problem?

A) The CSV data loaded in BigQuery is not flagged as CSV.
B) The CSV data has invalid rows that were skipped on import.
C) The CSV data loaded in BigQuery is not using BigQuery's default encoding.
D) The CSV data has not gone through an ETL phase before loading into BigQuery.

2. The YARN ResourceManager and the HDFS NameNode interfaces are available on a Cloud Dataproc cluster .

A) master node
B) worker node
C) conditional node
D) application node

3. You want to process payment transactions in a point-of-sale application that will run on Google Cloud Platform. Your user base could grow exponentially, but you do not want to manage infrastructure scaling.
Which Google database service should you use?

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

4. You are building a new application that you need to collect data from in a scalable way. Data arrives continuously from the application throughout the day, and you expect to generate approximately 150 GB of JSON data per day by the end of the year. Your requirements are: Decoupling producer from consumer Space and cost-efficient storage of the raw ingested data, which is to be stored indefinitely Near real-time SQL query Maintain at least 2 years of historical data, which will be queried with SQ Which pipeline should you use to meet these requirements?

A) Create an application that provides an AP
B) Create an application that writes to a Cloud SQL database to store the dat
C) Set up periodic exports of the database to write to Cloud Storage and load into BigQuery.
D) Create an application that publishes events to Cloud Pub/Sub, and create a Cloud Dataflow pipeline that transforms the JSON event payloads to Avro, writing the data to Cloud Storage and BigQuery.
E) Create an application that publishes events to Cloud Pub/Sub, and create Spark jobs on Cloud Dataproc to convert the JSON data to Avro format, stored on HDFS on Persistent Disk.
F) Write a tool to poll the API and write data to Cloud Storage as gzipped JSON files.

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

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

Solutions: