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Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

1. For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship between tasks and task templates?

A) There are always at least as many task attempts as there are tasks.
B) There are always at most as many tasks attempts as there are tasks.
C) The developer sets the number of task attempts on job submission.
D) There are always exactly as many task attempts as there are tasks.

2. Using cloudera manager on CDH4 cluster running mapreduce V1(MRv1), you delete a tasktracker role instance from a host that also a runs a datanode role instance and a region server role instance.cloudera
Manager make changes to the cluster and prompts you to the accept the changes.
What other configuration option will cloudera manager automatically prompt you to change?

A) the option to immediately rebalance the cluster
B) the option to specify an alternate slave host to place the received data node role instance
C) The option to failover to the instance by namenode
D) The option to change java maximum heap sizes for the other role instances

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

4. You install Cloudera Manager on a cluster where each host has 1 GB of RAM. All of the services show their status as concerning. However, all jobs submitted complete without an error.
Why is Cloudera Manager showing the concerning status KM the services?

A) The slave nodes are swapping.
B) DataNode service instance has crashed.
C) A slave node's disk ran out of space
D) The slave nodes, haven't sent a heartbeat in 60 minutes

5. MapReduce V2 (MRv2/YARN) splits which two major functions of the jobtracker into separate daemons?

A) Resource management
B) Job coordination between the resource manager and the node manager
C) Health status check (heartbeats)
D) Managing tasks
E) MapReduce metric reporting
F) Managing file system metadata
G) Launching tasks
H) Job scheduling/monitoring

Solutions: