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CCA-500 · Question #72
CCA-500 Question #72: Real Exam Question with Answer & Explanation
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Question
When requesting a file, how does HDFS retrieves the blocks associated with that file?
Options
- Athe client polls the datanodes for the block ID's
- Bthe namenode requires the datanode for the block ID's
- CThe namenode reads the block ID's from memory
- Dthe namenode reads the block ID's from disk
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