Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) 認定 CCA-470 試験問題:

1. Which daemon spawns child JVMs to perform MapReduce processing?

A) TaskTracker
B) JobTracker
C) NameNode
D) Secondary NameNode
E) DataNode

2. Your developers request that you enable them to use Hive on your Hadoop cluster. What do install and/or configure?

A) Install the Hive interpreter on the client machines and all nodes on the cluster
B) Install the Hive interpreter on the client machines only, and configure a shared remote Hive Metastore.
C) Install the Hive interpreter on the master node running the JobTracker, and configure a shared remote Hive Metastore.
D) Install the Hive Interpreter on the client machines and all the slave nodes, and configure a shared remote Hive Metastore.

3. Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster running MapReduce v1 (MRv1):

A) The NameNode requires more memory and no disk drives.
B) The NameNode requires less memory and less disk capacity than the DataNodes.
C) The NameNode requires more memory and requires greater disk capacity than the DataNodes.
D) The NameNode and DataNodes should the same hardware configuration.
E) The NameNode requires more memory but less disk capacity.

4. Hadoop provider web interface can be used for all of the following EXCEPT: (choose 1)

A) Keeping track of jobs running on the cluster.
B) Keeping track of the number of files and directories stored in HDFS.
C) Browsing files in HDFS.
D) Keeping track of tasks running on each individual slave node.
E) Keeping track of processor and memory utilization on each individual slave node.

5. Identify two features/issues that MapReduce v2 (MRv2/YARN) is designed to address:

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

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