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Cloudera CCA-470 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| HDFS Administration | - NameNode and DataNode management - HDFS architecture and data replication |
| Upgrade and Migration (CDH4 focus) | - Compatibility and migration considerations - Upgrading CDH components |
| MapReduce and Job Management | - Troubleshooting failed jobs - Job execution and scheduling |
| Cluster Installation and Configuration | - Installing and configuring CDH4 components - Cluster setup and node management |
| Hadoop and CDH Architecture | - CDH4 architecture overview and services - Hadoop ecosystem components (HDFS, MapReduce) |
| Cluster Maintenance and Monitoring | - Monitoring cluster health and performance - Log analysis and debugging |
Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
Question 1
What would be a reasonable configuration of disk drives in a Hadoop datanode?
A. Four 1TB disk drives in a RAID configuration
B. 48 1.5TB disk drives in a JBOD configuration
C. Four 1TB disk drives in a JBOD configuration
D. 48 1.5 TB disk drives in a RAID configuration
E. One 1TB disk drive
Question 2
How must you format the underlying filesystem of your Hadoop cluster's slave nodes running on Linux?
A. They must be formatted as HDFS
B. They must be formatted as either ext3 or ext4
C. They must not be formatted - - HDFS will format the filesystem automatically
D. They may be formatted in nay Linux filesystem
Question 3
Which daemon spawns child JVMs to perform MapReduce processing?
A. Secondary NameNode
B. TaskTracker
C. DataNode
D. NameNode
E. JobTracker
Question 4
Which command does Hadoop offer to discover missing or corrupt HDFS data?
A. Hadoop does not provide any tools to discover missing or corrupt data; there is no need because three replicas are kept for each data block.
B. Du
C. Fsck
D. Dskchk
E. The map-only checksum utility,
Question 5
Under which scenario 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 workloads consumes a large amount of input data, relative to the entire capacity of HDFS.
B. When the typical workloads generates a large amount of output data, significantly larger than the amount of intermediate data.
C. When the typical workloads generates a large amount of intermediate data, on the order of the input data itself.
D. When the typical workloads consists of processor-intensive tasks.
Solutions:
| Question 1 Answer: C | Question 2 Answer: B | Question 3 Answer: B | Question 4 Answer: C | Question 5 Answer: C |
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