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

1. You are planning a Hadoop duster, and you expect to be receiving just under 1TB of data per week which will be stored on the cluster, using Hadoop's default replication. You decide that your slave nodes will be configured with 4 x 1TB disks.
Calculate how many slave nodes you need to deploy at a minimum to store one year's worth of data.

A) 100 slave nodes
B) 50 slave nodes
C) 100 slave nodes
D) 10 slave nodes

2. You have a cluster running with the Fair in Scheduler enabled. There are currently no jobs running on the cluster, and you submit a job A, so that only job A is running on the cluster. A while later,
you submit job B, Now job A and job B are running on the cluster at the same time.
Which of the following describes how the Fair Scheduler operates? (Choose 2)

A) When job B gets submitted, it will get assigned tasks, while job A continues to run with fewer tasks.
B) When job A gets submitted, it doesn't consume all the task slots.
C) When job A gets submitted, it consumes all the task slots.
D) When job B gets submitted, job A has to finish first, before job B can get scheduled.

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

4. Which of the following scenarios makes HDFS unavailable?

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

5. What is the Secondary NameNode?

A) A standby NameNode, for high availability.
B) A process that performs a checkpoint operation on the files produced by the NameNode.
C) An alternate data channel for clients to reach HDFS, should the NameNode become too busy.
D) A process purely intended to perform backups of the NameNode.
E) A data channel between the primary name node and the tertiary NameNode.

Solutions: