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HP0-J73 · Question #84
HP0-J73 Question #84: Real Exam Question with Answer & Explanation
The correct answer is D: hash-based chunking. Inline deduplication devices use hash-based chunking to detect and eliminate duplicate data segments in the write path before any data is committed to storage.
Question
Which deduplication method is used by inline deduplication devices?
Options
- Aobject differencing
- Bzone level
- Cbyte-level-delta
- Dhash-based chunking
Explanation
Inline deduplication devices use hash-based chunking to detect and eliminate duplicate data segments in the write path before any data is committed to storage.
Common mistakes.
- A. Object differencing is not a recognized inline deduplication method - it is a concept more associated with object storage versioning or differential backup strategies rather than inline dedup processing.
- B. Zone-level is not a standard deduplication method; deduplication operates at the data chunk or block level, not at a zone abstraction.
- C. Byte-level-delta (delta differencing) is a compression technique that records only the differences between data versions, used in post-process or replication deduplication scenarios rather than inline write-path deduplication.
Concept tested. Inline deduplication using hash-based chunking mechanism
Reference. https://www.snia.org/sites/default/files/technical_work/Deduplication/SNIA_Deduplication_101.pdf
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