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

1. Identify the daemon that performs checkpoint operations of the namespace state in a cluster configured with HDFS High Availability (HA) using Quorum based-storage?

A) BackupNode
B) NameNode
C) NodeManeger
D) Secondary NameNode
E) JournalNode
F) Standby NameNode
G) CheckpointNode

2. Under which of the following scenarios 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 workload generates a large amount of output data, significantly larger than the amount of intermediate data.
B) When the typical workload consumes a large amount of input data, relative to the entire Canada of HDFS.
C) When the typical workload generates a large amount of intermediate data, on the order of the input data itself.
D) When the typical workload consists of processor-intensive tasks.

3. How must you format the underlying filesystem of your Hadoop cluster's slave nodes running on Linux?

A) They must be formatted as either ext3 or ext4
B) They must be formatted as HDFS
C) They must not be formatted - - HDFS will format the filesystem automatically
D) They may be formatted in nay Linux filesystem

4. Hadoop provider web interface can be used for all of the following EXCEPT: (choose 1)

A) Browsing files in HDFS.
B) Keeping track of the number of files and directories stored in HDFS.
C) Keeping track of jobs running on the cluster.
D) Keeping track of tasks running on each individual slave node.
E) Keeping track of processor and memory utilization on each individual slave node.

5. You've configured your cluster with HDFS Federation. One NameNode manages the /data namesapace and another Name/Node manages the /reports namespace. How do you configure a client machine to access both the /data and the /reports directories on the cluster?

A) Configure the client to mount both namespaces by specifying the appropriate properties in the core-site.xml
B) You cannot configure a client to access both directories in the current implementation of HDFS Federation.
C) Configure the client to mount the /data namespace. As long as a single namespace is mounted and the client participates in the cluster, HDFS grants access to all files in the cluster to that client.
D) You don't need to configure any parameters on the client machine. Access is controlled by the NameNodes managing the namespace.

Solutions: