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CCA-500 · Question #34
CCA-500 Question #34: Real Exam Question with Answer & Explanation
The correct answer is A. It only keeps track of which NameNode is Active at any given time. Availability-Guide.pdf(page 15)
Question
You decide to create a cluster which runs HDFS in High Availability mode with automatic failover, using Quorum Storage. What is the purpose of ZooKeeper in such a configuration?
Options
- AIt only keeps track of which NameNode is Active at any given time
- BIt monitors an NFS mount point and reports if the mount point disappears
- CIt both keeps track of which NameNode is Active at any given time, and manages the Edits file.
- DIf only manages the Edits file, which is log of changes to the HDFS filesystem
- EClients connect to ZooKeeper to determine which NameNode is Active
Explanation
Availability-Guide.pdf(page 15)
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