H13-711_V3.5 · Question #345
Hadoop's NameNode is used to store the metadata of the file system.
The correct answer is A. True. A (True) is correct because the NameNode is the master server in Hadoop's HDFS architecture, responsible for maintaining all filesystem metadata - including the directory tree, file-to-block mappings, block locations, permissions, and replication factors. It does not store the…
Question
Hadoop's NameNode is used to store the metadata of the file system.
Options
- ATrue
- BFalse
How the community answered
(56 responses)- A79% (44)
- B21% (12)
Explanation
A (True) is correct because the NameNode is the master server in Hadoop's HDFS architecture, responsible for maintaining all filesystem metadata - including the directory tree, file-to-block mappings, block locations, permissions, and replication factors. It does not store the actual file data; that lives on the DataNodes.
B (False) is wrong because it contradicts Hadoop's core design - removing the NameNode's metadata role would break the entire HDFS namespace management.
Memory tip: Think of the NameNode as the "library catalog" - it knows where every book (data block) is shelved, but the actual books live on the shelves (DataNodes). No catalog = no way to find anything.
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