Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade 認定 CCA-505 試験問題:

1. You are configuring your cluster to run HDFS and MapReduce v2 (MRv2) on YARN. Which daemons need to be installed on your clusters master nodes? (Choose Two)

A) TaskTracker
B) JobTracker
C) HMaster
D) ResourceManager
E) NameNode
F) DataNode

2. Which process instantiates user code, and executes map and reduce tasks on a cluster running MapReduce V2 (MRv2) on YARN?

A) ApplicationMaster
B) TaskTracker
C) JobTracker
D) ResourceManager
E) NodeManager
F) NameNode
G) DataNode

3. Identify two features/issues that YARN is designed to address:

A) Single point of failure in the NameNode
B) Reduce complexity of the MapReduce APIs
C) Standardize on a single MapReduce API
D) Resource pressures on the JobTracker
E) HDFS latency
F) Ability to run frameworks other than MapReduce, such as MPI

4. On a cluster running MapReduce v2 (MRv2) on YARN, a MapReduce job is given a directory of 10 plain text as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?

A) We cannot say; the number of Mappers is determined by the ApplicationManager
B) 30
C) 10
D) We cannot say; the number of Mappers is determined by the developer
E) 3
F) We cannot say; the number of Mappers is determined by the RsourceManager

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