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Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:

1. Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?

A) hadoop fs -put foo LocalFoo
B) hadoop fs -Is foo
C) hadoop fs -get foo LocalFoo
D) hadoop -cp foo LocalFoo

2. In a MapReduce job with 500 map tasks, how many map task attempts will there be?

A) At most 500.
B) Exactly 500.
C) At least 500.
D) Between 500 and 1000.
E) It depends on the number of reduces in the job.

3. Which describes how a client reads a file from HDFS?

A) The client contacts the NameNode for the block location(s). The NameNode then queries the DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects the client to the DataNode that holds the requested data block(s). The client then reads the data directly off the DataNode.
B) The client queries all DataNodes in parallel. The DataNode that contains the requested data responds directly to the client. The client reads the data directly off the DataNode.
C) The client queries the NameNode for the block location(s). The NameNode returns the block location(s) to the client. The client reads the data directory off the DataNode(s).
D) The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then from the NameNode to the client.

4. Which YARN component is responsible for monitoring the success or failure of a Container?

A) ResourceManager
B) NodeManager
C) JobTracker
D) ApplicationMaster

5. Which one of the following statements regarding the components of YARN is FALSE?

A) The ResourceManager monitors and restarts any failed Containers
B) A client application submits a YARW job to the ResourceManager
C) A Container executes a specific task as assigned by the ApplicationMaster
D) The ResourceManager is responsible for scheduling and allocating resources

Solutions: