Point out the wrong statement.
A. Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides resizable compute capacity in the cloud
B. Amazon EC2 is designed to make web-scale cloud computing easier for developers.
C. Amazon EC2's simple web service interface allows you to obtain and configure capacity with minimal friction.
D. None of the mentioned
Answer: Option D
What is a common optimization technique to improve Hadoop MapReduce performance?
A. Increase block size
B. Decrease block size
C. Maintain the default block size
D. Use fewer mappers
Which compression codec is commonly used for optimizing storage in Hadoop?
A. Gzip
B. Snappy
C. Bzip2
D. LZO
What is the purpose of Hadoop speculative execution?
A. To handle speculative workloads
B. To minimize resource usage
C. To mitigate the impact of slow-running tasks
D. To speed up task completion
How can data skew in a Hadoop job be addressed for optimization?
A. Increase the number of reducers
B. Decrease the number of reducers
C. Use a combiner function
D. Use a custom partitioner
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