Vendor: Cloudera
Certifications: CCAH
Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH)
Exam Code: CCA-500
Total Questions: 60 Q&As
Last Updated: Jun 20, 2022
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CCA-500 Online Practice Questions and Answers
Which is the default scheduler in YARN?
A. YARN doesn't configure a default scheduler, you must first assign an appropriate scheduler class in yarn-site.xml
B. Capacity Scheduler
C. Fair Scheduler
D. FIFO Scheduler
During the execution of a MapReduce v2 (MRv2) job on YARN, where does the Mapper place the intermediate data of each Map Task?
A. The Mapper stores the intermediate data on the node running the Job's ApplicationMaster so that it is available to YARN ShuffleService before the data is presented to the Reducer
B. The Mapper stores the intermediate data in HDFS on the node where the Map tasks ran in the HDFS / usercache/and(user)/apache/application_and(appid) directory for the user who ran the job
C. The Mapper transfers the intermediate data immediately to the reducers as it is generated by the Map Task
D. YARN holds the intermediate data in the NodeManager's memory (a container) until it is transferred to the Reducer
E. The Mapper stores the intermediate data on the underlying filesystem of the local disk in the directories yarn.nodemanager.locak-DIFS
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?
A. It only keeps track of which NameNode is Active at any given time
B. It monitors an NFS mount point and reports if the mount point disappears
C. It both keeps track of which NameNode is Active at any given time, and manages the Edits file. Which is a log of changes to the HDFS filesystem
D. If only manages the Edits file, which is log of changes to the HDFS filesystem
E. Clients connect to ZooKeeper to determine which NameNode is Active
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