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Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

1. Your developers request that you enable them to use pig on your hadoop cluster. What do you need to configure and / or install?

A) Install the pig interpreter on the master node which is running the jobtracker
B) Install the pig interpreter on all nodes in the cluster, and the client machines
C) Install the pig jar's on the all slave nodes in the cluster the pig interpreter on the client machines
D) Install the pig interpreter on the client machines only.

2. The most important consideration for slave nodes in a Hadoop cluster running production jobs that require short turnaround times is:

A) The ratio between the amount of memory and the number of disk drives.
B) The ratio between the number of processor cores and number of disk drives.
C) The ratio between the amount of memory and the total storage capacity.
D) The ratio between the number of processor cores and the amount of memory.
E) The ratio between the number of processor cores and total storage capacity.

3. You configure you cluster with HDFS High Availability (HA) using Quorum-Based storage. You do
not implement HDFS Federation.
What is the maximum number of NameNodes daemon you should run on you cluster in order to avoid a "split-brain" scenario with your NameNodes?

A) One active NameNode and one Standby NameNode
B) Two active NameNodes and two Standby NameNodes
C) Unlimited. HDFS High Availability (HA) is designed to overcome limitations on the number of NameNodes you can deploy.
D) Two active NameNodes and one Standby NameNode

4. When planning a hadoop cluster, what general rule governs the hardware requirements between master nodes and slave nodes?

A) The master and slave nodes should have the same hardware configuration
B) The master nodes requires more memory but less disk capacity
C) the master nodes requires less memory and fewer number disk drives than the slave nodes
D) The master nodes require more memory and greater disk capacity then the slave nodes
E) The master nodes requires more memory and no disk drives

5. Your company stores user profile records in an OLTP database. You want to join these records with webserver logs. You have already ingested into the hadoop file system. What is the best way to obtain and ingest these user records?

A) Ingest with hadoop streaming
B) Ingest with Pig's Load Command
C) Ingest with flume agents
D) Ingest using the HDFS put command
E) Ingest using hives LOAD DATA command
F) Ingest with SQL import

Solutions: