CCA-470 Cloudera Cloudera Certified Administrator for(R) Apache Hadoop CDH4 Upgrade (CCAH)
CCA-470 Answer: B, C QUESTION: 81 What information is stored on disk on the NameNode? (Choose 4) A. File permissions of the files in HDFS. B. An edit log of changes that have been made since the last backup of the NameNode. C. A catalog of DataNodes and the blocks that are stored on them. D. Names of the files in HDFS. E. The directory structure of the files in HDFS. F. An edit log of changes that have been made since the last snapshot compaction by the Secondary NameNode. G. The status of the heartbeats of each DataNode. Answer: C, D, E, F QUESTION: 82 Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster: A. The NameNode requires more memory and no disk drives. B. The NameNode requires more memory but less disk capacity. C. The NameNode and DataNodes should have the same hardware configuration. D. The NameNode requires less memory and fewer number of disk drives than the DataNodes.
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- Fall '20
- Hadoop, NameNode