How many formats of SequenceFile are present in Hadoop I/O?
(a) 2
(b) 3
(c) 4
(d) 5
(a) 2
(b) 3
(c) 4
(d) 5
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Right choice is (b) 3
For explanation I would say: SequenceFile has 3 available formats: An “Uncompressed” format, a “Record Compressed” format and a “Block-Compressed”.