Which row keys are likely to cause a disproportionate number of reads and/or writes on a particular node in a Bigtable cluster (select 2 answers)?

• A.A sequential numeric ID
• B.A timestamp followed by a stock symbol
• C.A non-sequential numeric ID
• D.A stock symbol followed by a timestamp

Comment: *

Name: *

Email: *

Verification: *

You have Cloud Functions written in Node.js that pull messages from Cloud Pub/Sub and send the data to BigQuery. You observe that the message processing rate on the Pub/Sub topic is orders of magnitude higher than anticipated, but there is no error logged in Stackdriver Log Viewer. What are the two most likely causes of this problem? (Choose two.)

• A.Error handling in the subscriber code is not handling run-time errors properly.
• B.Publisher throughput quota is too small.
• C.Total outstanding messages exceed the 10-MB maximum.
• D.The subscriber code cannot keep up with the messages.
• E.The subscriber code does not acknowledge the messages that it pulls.

Comment: *

Name: *

Email: *

Verification: *

You work for a bank. You have a labelled dataset that contains information on already granted loan application and whether these applications have been defaulted. You have been asked to train a model to predict default rates for credit applicants.
What should you do?

• A.Increase the size of the dataset by collecting additional data.
• B.Match loan applicants with their social profiles to enable feature engineering.
• C.Train a linear regression to predict a credit default risk score.
• D.Remove the bias from the data and collect applications that have been declined loans.

Comment: *

Name: *

Email: *

Verification: *

You are using Cloud Bigtable to persist and serve stock market data for each of the major indices. To serve the trading application, you need to access only the most recent stock prices that are streaming in How should you design your row key and tables to ensure that you can access the data with the most simple query?

• A.For each index, have a separate table and use a reverse timestamp as the row key design
• B.Create one unique table for all of the indices, and then use a reverse timestamp as the row key design.
• C.For each index, have a separate table and use a timestamp as the row key design
• D.Create one unique table for all of the indices, and then use the index and timestamp as the row key design

Comment: *

Name: *

Email: *

Verification: *

To give a user read permission for only the first three columns of a table, which access control method would you use?

• A.Primitive role
• B.Predefined role
• C.Authorized view
• D.It's not possible to give access to only the first three columns of a table.

Comment: *

Name: *

Email: *

Verification: *