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Cloudera CDP Data Engineer - Certification Exam Sample Questions (Q217-Q222):

NEW QUESTION # 217
You're working with a Spark application that processes streaming data in real-time. How does Spark handle persistence in this context?

A. Spark leverages micro-batching and checkpointing for persistence in streaming applications
B. Spark uses the same persistence mechanisms as batch processing for streaming data
C. Streaming data cannot be persisted due to its continuous nature
D. Streaming data is automatically persisted to HDFS for historical analysis

Answer: A

Explanation:
Unlike batch processing A, streaming data is continuous. Spark utilizes micro-batching C to break down the stream into small, manageable batches, allowing for persistence techniques like updateStateByKey or checkpoint to be applied within these batches. Option B is incorrect as persistence is possible, and D is not always the case.

NEW QUESTION # 218
In the context of Hive, what mechanism ensures that data is evenly distributed across buckets?

A. Natural key distribution
B. Manual data insertion scripts
C. A hash function applied to the bucketing column
D. External data balancing tools

Answer: C

Explanation:
In the context of Hive, a hash function applied to the bucketing column ensures that data is evenly distributed across buckets. When data is inserted into a bucketed table, Hive applies a hash function to the value of the bucketing column for each row to determine the bucket where the row should be stored. This mechanism helps achieve an even distribution of data across buckets, which is crucial for optimizing query performance and data management efficiency.

NEW QUESTION # 219
What is a primary benefit of schema-on-read compared to schema-on-write in big data processing frameworks?

A. It significantly reduces the computational overhead during data ingestion.
B. It mandates manual intervention for each data read operation.
C. It allows for greater flexibility in data formats and structures at the time of analysis.
D. It requires all data to conform to a rigid schema before storage.

Answer: C

Explanation:
Schema-on-read provides flexibility by deferring the interpretation of data structure until the data is read for analysis, unlike schema-on-write, which requires defining the schema before data storage. This approach allows for the processing of various data formats and structures without needing upfront schema definition, making it highly suitable for environments dealing with semi-structured or unstructured data.

NEW QUESTION # 220
How does the Cloudera Data Engineering service integrate with cloud storage solutions like Amazon S3 or Azure Blob Storage?

A. Requires custom scripting for each cloud storage provider.
B. Utilizes built-in connectors for seamless access.
C. Requires manual configuration for each storage bucket.
D. Not directly supported, requires external tools.

Answer: B

Explanation:
The Cloudera Data Engineering service comes with pre-built connectors for various cloud storage solutions like Amazon S3 and Azure Blob Storage. These connectors simplify data movement and integration between the platform and cloud storage solutions.

NEW QUESTION # 221
What is the primary purpose of the Airflow Scheduler in Apache Airflow?

A. To distribute tasks across workers for execution
B. To provide a user interface for monitoring and managing DAGs
C. To execute the code for each task in a DAG
D. To monitor the state of tasks and trigger them based on their dependencies

Answer: D

Explanation:
The Airflow Scheduler monitors all tasks and DAGs, then triggers the task instances whose dependencies have been met. Its primary role is not to execute task code (handled by the Executor) or distribute tasks (also a role of the Executor), nor is it to provide a UI (handled by the Webserver).

NEW QUESTION # 222
......

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CDP-3002 Customized Lab Simulation | Valid CDP-3002 Exam Camp

Valid CDP-3002 Exam Camp, CDP-3002 Study Tool

Cloudera CDP Data Engineer - Certification Exam Sample Questions (Q217-Q222):

Useful and reliable CDP-3002 training dumps & high-quality Cloudera CDP-3002 training material

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