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

1. The failure of which daemon makes HDFS unavailable on a cluster running MapReduce v1 (MRv1)?

A) Secondary NameNode
B) Resource Manager
C) Application Manager
D) Node Manager
E) NameNode
F) DataNode

2. Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster running MapReduce v1 (MRv1):

A) The NameNode and DataNodes should the same hardware configuration.
B) The NameNode requires less memory and less disk capacity than the DataNodes.
C) The NameNode requires more memory and requires greater disk capacity than the DataNodes.
D) The NameNode requires more memory and no disk drives.
E) The NameNode requires more memory but less disk capacity.

3. Which of the following scenarios makes HDFS unavailable?

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

4. Which MapReduce daemon instantiates user code, and executes map and reduce tasks on a cluster running MapReduce v1 (MRv1)?

A) JobTracker
B) NodeManager
C) ResourceManager
D) ApplicationMaster
E) NameNode
F) TaskTracker
G) DataNode

5. Which daemon spawns child JVMs to perform MapReduce processing?

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

Solutions: