Question

How does HDFS ensure fault tolerance for data blocks?

a.

By replicating data blocks on multiple datanodes

b.

By using a highly available namenode

c.

By increasing the block size for data storage

d.

By performing regular consistency checks on datanodes

Posted under Big Data Computing

Answer: (a).By replicating data blocks on multiple datanodes Explanation:HDFS ensures fault tolerance for data blocks by replicating data blocks on multiple datanodes.

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Q. How does HDFS ensure fault tolerance for data blocks?

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