Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH): CCA-470 Exam Premium File as PDF & Test Engine
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Our Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Preparation Material provides you everything you will need to take a Cloudera CCAH CCA-470 examination. Details are researched and produced by Cloudera Certification Experts who are constantly using industry experience to produce precise, and logical.
Cloudera CCA-470 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Cluster Maintenance and Monitoring | - Log analysis and debugging - Monitoring cluster health and performance |
| Topic 2: Upgrade and Migration (CDH4 focus) | - Upgrading CDH components - Compatibility and migration considerations |
| Topic 3: HDFS Administration | - NameNode and DataNode management - HDFS architecture and data replication |
| Topic 4: MapReduce and Job Management | - Troubleshooting failed jobs - Job execution and scheduling |
| Topic 5: Hadoop and CDH Architecture | - CDH4 architecture overview and services - Hadoop ecosystem components (HDFS, MapReduce) |
| Topic 6: Cluster Installation and Configuration | - Installing and configuring CDH4 components - Cluster setup and node management |
Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
1. Which of the following statements is the most accurate about the choice of operating systems to run on a Hadoop cluster?
A) The choice of operating system isn't very important for a Hadoop cluster.
B) Linux is preferable to Windows and Solaris/OpenSolaris. Some Linux distributions are intended for cluster environments more than others.
C) Linux and Solaris/OpenSolaris are preferable to Windows. Solaris running on SPARC hardware is the preferred Hadoop slave node configuration.
D) Linux is preferable to Windows and Solaris/OpenSolaris, but the choice of Linux distribution is unimportant when planning a Hadoop cluster.
2. What is the Secondary NameNode?
A) A data channel between the primary name node and the tertiary NameNode.
B) A process that performs a checkpoint operation on the files produced by the NameNode.
C) A standby NameNode, for high availability.
D) An alternate data channel for clients to reach HDFS, should the NameNode become too busy.
E) A process purely intended to perform backups of the NameNode.
3. 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 may be formatted in nay Linux filesystem
D) They must not be formatted - - HDFS will format the filesystem automatically
4. 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) Unlimited. HDFS High Availability (HA) is designed to overcome limitations on the number of NameNodes you can deploy.
B) Two active NameNodes and one Standby NameNode
C) One active NameNode and one Standby NameNode
D) Two active NameNodes and two Standby NameNodes
5. What metadata is stored on a DataNode when a block is written to it?
A) Information on the file's location in HDFS.
B) Node location of each block belonging to the same namespace.
C) Checksums for the data in the block, as a separate file.
D) None. Only the block itself is written.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: B |
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