CCDAK 試験問題を無料オンラインアクセス

(You create an Orders topic with 10 partitions.
The topic receives data at high velocity.
Your Kafka Streams application initially runs on a server with four CPU threads.
You move the application to another server with 10 CPU threads to improve performance.
What does this example describe?)

• A.Horizontal Scaling
• B.Scaling Out
• C.Plain Scaling
• D.Vertical Scaling

(A stream processing application tracks user activity in online shopping carts, including items added, removed, and ordered throughout the day for each user.
You need to capture data to identify possible periods of user inactivity.
Which type of Kafka Streams window should you use?)

• A.Tumbling
• B.Hopping
• C.Sliding
• D.Session

You have a Kafka Connect cluster with multiple connectors.
One connector is not working as expected.
How can you find logs related to that specific connector?

• A.Modify the log4j.properties file to add a dedicated log appender for the connector.
• B.Make no change, there is no way to find logs other than by stopping all the other connectors.
• C.Modify the log4j.properties file to enable connector context.
• D.Change the log level to DEBUG to have connector context information in logs.

(You need to send a JSON message on the wire. The message key is a string.
How would you do this?)

• A.Specify a value serializer class for the JSON contents of the message's value. Set a key serializer for the string value.
• B.Specify a value serializer class for the JSON contents of the message's value. Set the key serializer class to JSON.
• C.Specify a key serializer class for the JSON contents of the message's value. Set the value serializer class to null.
• D.Specify a value serializer class for the JSON contents of the message's value. Set the key serializer class to null.

(You deploy a Kafka Streams application with five application instances.
Kafka Streams stores application metadata using internal topics.
Auto-topic creation is disabled in the Kafka cluster.
Which statement about this scenario is true?)

• A.The application will terminate with a non-retriable exception.
• B.The application will be on hold until internal topics are created manually.
• C.The application will continue to work and internal topics will be created, even if auto-topic creation is disabled.
• D.The application will work, but application metadata will not be stored.