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Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

1. Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching application containers and monitoring application resources usage?

A) ApplicationMasterService
B) ApplicationMaster
C) NodeManager
D) ResourceManager
E) JobTracker
F) TaskTracker

2. You configure Hadoop cluster with both MapReduce frameworks, MapReduce v1 (MRv1) and MapReduce v2 (MRv2/YARN). Which two MapReduce (computational) daemons do you need to configure to run on your master nodes?

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

3. MapReduce V2 (MRv2/YARN) splits which two major functions of the jobtracker into separate daemons?

A) Job scheduling/monitoring
B) Job coordination between the resource manager and the node manager
C) Managing file system metadata
D) MapReduce metric reporting
E) Resource management
F) Managing tasks
G) Launching tasks
H) Health status check (heartbeats)

4. Identify two features/issues that MapReduce v2 (MRv2/YARN) is designed to address:

A) Resource pressure on the JobTrackr
B) HDFS latency.
C) Ability to run frameworks other than MapReduce, such as MPI.
D) Standardize on a single MapReduce API.
E) Reduce complexity of the MapReduce APIs.
F) Single point of failure in the NameNode.

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

Solutions: