The need for data replication can arise in various scenarios like

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Question:

The need for data replication can arise in various scenarios like

A.

DataNode is the slave/worker node and holds the user data in the form of Data Blocks

B.

DataNode goes down

C.

Data Blocks get corrupted

D.

All of the above

Answer» d. All of the above

Note: The above multiple-choice question is for all general and Competitive Exams in India.