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NEW QUESTION 21
You are building a data pipeline on Google Cloud. You need to prepare data using a casual method for a machine-learning process. You want to support a logistic regression model. You also need to monitor and adjust for null values, which must remain real-valued and cannot be removed. What should you do?
- A. Use Cloud Dataflow to find null values in sample source data. Convert all nulls to ‘none’ using a Cloud Dataprep job.
- B. Use Cloud Dataprep to find null values in sample source data. Convert all nulls to 0 using a Cloud Dataprep job.
- C. Use Cloud Dataflow to find null values in sample source data. Convert all nulls to 0 using a custom script.
- D. Use Cloud Dataprep to find null values in sample source data. Convert all nulls to ‘none’ using a Cloud Dataproc job.
Answer: A
NEW QUESTION 22
Which of the following is not true about Dataflow pipelines?
- A. Pipelines can share data between instances
- B. Pipelines are a set of operations
- C. Pipelines represent a data processing job
- D. Pipelines represent a directed graph of steps
Answer: A
Explanation:
The data and transforms in a pipeline are unique to, and owned by, that pipeline. While your program can create multiple pipelines, pipelines cannot share data or transforms Reference: https://cloud.google.com/dataflow/model/pipelines
NEW QUESTION 23
You store historic data in Cloud Storage. You need to perform analytics on the historic data. You want to use a solution to detect invalid data entries and perform data transformations that will not require programming or knowledge of SQL.
What should you do?
- A. Use Cloud Dataflow with Beam to detect errors and perform transformations.
- B. Use Cloud Dataprep with recipes to detect errors and perform transformations.
- C. Use federated tables in BigQuery with queries to detect errors and perform transformations.
- D. Use Cloud Dataproc with a Hadoop job to detect errors and perform transformations.
Answer: A
NEW QUESTION 24
In order to securely transfer web traffic data from your computer’s web browser to the Cloud Dataproc cluster you should use a(n) _____.
- A. FTP connection
- B. Special browser
- C. VPN connection
- D. SSH tunnel
Answer: D
Explanation:
To connect to the web interfaces, it is recommended to use an SSH tunnel to create a secure connection to the master node.
Reference: https://cloud.google.com/dataproc/docs/concepts/cluster-web- interfaces#connecting_to_the_web_interfaces
NEW QUESTION 25
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