Cloudera CCA-470 Actual Tests : Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH)

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Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:

Question 1

How does the NameNode know DataNodes are available on a cluster running MapReduce v1 (MRv1)

A. DataNodes heartbeat in the master on a regular basis.
B. The NameNode broadcasts a heartbeat on the network on a regular basis, and DataNodes respond.
C. DataNodes listed in the dfs.hosts file. The NameNode uses as the definitive list of available DataNodes.
D. The NameNode send a broadcast across the network when it first starts, and DataNodes respond.

Question 2

How must you format the underlying filesystem of your Hadoop cluster's slave nodes running on Linux?

A. They must be formatted as either ext3 or ext4
B. They must be formatted as HDFS
C. They may be formatted in nay Linux filesystem
D. They must not be formatted - - HDFS will format the filesystem automatically

Question 3

Which scheduler would you deploy to ensure that your cluster allows short jobs to finish within a reasonable time without starving long-running jobs?

A. FIFO Scheduler
B. Capacity Scheduler
C. Fair Scheduler
D. Completely Fair Scheduler (CFS)

Question 4

How does the HDFS architecture provide redundancy?

A. Reliance on SAN devices as a DataNode interface.
B. Reliance on RAID at each datanode.
C. Storing multiple replicas of data blocks on different DataNodes.
D. DataNodes make copies of their data blocks, and put them on different local disks.

Question 5

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

Solutions: