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Cloudera CDP-3002 Exam Syllabus Topics:

Cloudera CDP Data Engineer - Certification Sample Questions:

Question 1

When monitoring a PySpark application in Kubernetes, you notice that Executor pods are frequently restarting. What is the most likely cause of this issue?

A. Too many tasks assigned to each Executor.
B. Executor pods are not configured to restart upon failure.
C. Insufficient memory allocation for Executor pods.
D. Dynamic resource allocation is disabled.

Question 2

You're working with a complex DataFrame containing nested structures (e.g., arrays of structs). How can you access and manipulate data within these nested structures?

A. Leverage Spark SQL's built-in functions like explode and struct
B. Convert the nested data into a simpler format like a single-level DataFrame
C. Directly access elements using their position within the nested structure
D. Implement custom recursive functions to navigate through the nested structure

Question 3

Why are partitioned tables beneficial in Hive for large datasets?

A. They ensure that all data is stored in a single file, simplifying access.
B. They automatically encrypt data based on the partition key.
C. They allow for faster query processing by scanning only relevant partitions.
D. They decrease the security of the data.

Question 4

Which of the following strategies would NOT be recommended for managing skewed data during join operations in Spark?

A. Salting the keys to distribute the data more evenly across partitions.
B. Using a broadcast join assuming one dataset is small enough to fit into memory.
C. Applying a filter to remove outliers that cause data skewness before joining.
D. Increasing the number of partitions to distribute the skewed data more evenly.

Question 5

You are deploying a Spark application on Kubernetes, which requires access to a web I-Jl. You decide to expose it using a Kubernetes service. Which type of service would you typically use to expose the Spark IJI to external traffic?

A. ClusteriP
B. LoadBalancer
C. NodePort
D. ExternalName

Solutions: