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Cloudera CCA-470 Exam Syllabus Topics:

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

1. On a cluster running MapReduce v1 (MRv1), 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) 30
B) 10
C) We cannot say; the number of Mappers is determined by the developer
D) 1

2. For a MapReduce job, what's the relationship between tasks and task attempts?

A) There are always at least as many task attempts as there are tasks.
B) There are always exactly as many task attempts as there are tasks.
C) There are always at most as many task attempts as there are tasks.

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 and all nodes on the cluster
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 only, and configure a shared remote Hive Metastore.

4. 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) Completely Fair Scheduler (CFS)
D) Fair Scheduler

5. Under which scenario would it be most appropriate to consider using faster (e.g 10 Gigabit) Ethernet as the network fabric for your Hadoop cluster?

A) When the typical workloads generates a large amount of intermediate data, on the order of the input data itself.
B) When the typical workloads consists of processor-intensive tasks.
C) When the typical workloads generates a large amount of output data, significantly larger than the amount of intermediate data.
D) When the typical workloads consumes a large amount of input data, relative to the entire capacity of HDFS.

Solutions: