Question 1

A manufacturer of delivery drones is implementing a new data analysis pipeline to detect part failures before they occur. The drones have multiple sensors that send performance and environment data to an analytics pipeline. Currently, data is sent to a REST API endpoint. The REST API endpoint that receives data cannot always keep up with the pace data is arriving. When that happens, data is lost. Machine learning engineers have asked you to change the ingestion process to reduce this data loss. What would you do?

Options :

A : Write data to a Cloud Pub/Sub topic instead of a REST API endpoint and have the ingestion application read from the topic.

B : Write data to a Cloud Storage bucket instead of a REST API endpoint and have the ingestion application read from the bucket.

C : Write data to a Cloud SQL Postgres database endpoint and have the ingestion application query the database.

D : Create a Hadoop cluster in Compute Engine using managed instance groups and write data to an Hbase database and have the application query the database.

Answer: A

Question 2

Which role must be assigned to a service account used by the virtual machines in a Dataproc cluster so they can execute jobs?

Options :

A : Dataproc Worker

B : Dataproc Viewer

C : Dataproc Runner

D : Dataproc Editor

Answer: A

Question 3

Your company is running their first dynamic campaign, serving different offers by analyzing real-time data during the holiday season. The data scientists are collecting terabytes of data that rapidly grows every hour during their 30-day campaign. They are using Google Cloud Dataflow to preprocess the data and collect the feature (signals) data that is needed for the machine learning model in Google Cloud Bigtable. The team is observing suboptimal performance with reads and writes of their initial load of 10 TB of data. They want to improve this performance while minimizing cost. What should they do?

Options :

A : Redefine the schema by evenly distributing reads and writes across the row space of the table.

B : The performance issue should be resolved over time as the site of the BigDate cluster is increased.

C : Redesign the schema to use a single row key to identify values that need to be updated frequently in the cluster.

D : Redesign the schema to use row keys based on numeric IDs that increase sequentially per user viewing the offers.

Answer: A

Question 4

You have some data, which is shown in the graphic below. The two dimensions are X and Y, and the shade of each dot represents what class it is. You want to classify this data accurately using a linear algorithm

To do this you need to add a synthetic feature. What should the value of that feature be?

Options :

A : X^2+Y^2

B : X^2

C : Y^2

D : cos(X)

Answer: D

Question 5

Which methods can be used to reduce the number of rows processed by BigQuery?

Options :

A : Splitting tables into multiple tables; putting data in partitions

B : Splitting tables into multiple tables; putting data in partitions; using the LIMIT clause

C : Putting data in partitions; using the LIMIT clause

D : Splitting tables into multiple tables; using the LIMIT clause

Answer: A

Higher Test Marks with Free Online Professional-Data-Engineer Exam Practice

Buying Options: