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Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH): CCA-470 Exam
"Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH)", also known as CCA-470 exam, is a Cloudera Certification. With the complete collection of questions and answers, BraindumpsPass has assembled to take you through 87 Q&As to your CCA-470 Exam preparation. In the CCA-470 exam resources, you will cover every field and category in CCAH Certification helping to ready you for your successful Cloudera Certification.
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Cloudera CCA-470 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cluster Installation and Configuration | - Installing and configuring CDH4 components - Cluster setup and node management |
| Hadoop and CDH Architecture | - Hadoop ecosystem components (HDFS, MapReduce) - CDH4 architecture overview and services |
| Cluster Maintenance and Monitoring | - Log analysis and debugging - Monitoring cluster health and performance |
| Upgrade and Migration (CDH4 focus) | - Upgrading CDH components - Compatibility and migration considerations |
| HDFS Administration | - HDFS architecture and data replication - NameNode and DataNode management |
| MapReduce and Job Management | - Job execution and scheduling - Troubleshooting failed jobs |
Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
Identify the function performed by the Secondary NameNode daemon on a cluster configured to run with a single NameNode.
- A. In this configuration, the Secondary NameNode performs deal-time backups of the NameNode.
- B. In this configuration, the Secondary NameNode performs a checkpoint operation on the files by the NameNode.
- C. In this configuration, the Secondary NameNode servers as alternate data channel for clients to reach HDFS, should the NameNode become too busy.
- D. In this configuration, the Secondary NameNode is standby NameNode, ready to failover and provide high availability.
Answer: B
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You are running a Hadoop cluster with all monitoring facilities properly configured. Which scenario will go undetected?
- A. The NameNode goes down.
- B. MapReduce jobs that are causing excessive memory swaps.
- C. A DataNode is disconnected from the cluster.
- D. HDFS is almost full.
- E. Map or reduce tasks that are stuck in an infinite loop.
Answer: E
What two processes must you do if you are running a Hadoop cluster with a single NameNode and six DataNodes, and you want to change a configuration parameter so that it affects all six DataNodes.
- A. You must restart the NameNode daemon to apply the changes to the cluster
- B. You don't need to restart any daemon, as they will pick up changes automatically.
- C. You must restart all six DataNode daemons to apply the changes to the cluster.
- D. You must modify the configuration files on only one of the DataNode machine
- E. You must modify the configuration files on the NameNode only. DataNodes read their configuration from the master nodes.
- F. You must modify the configuration files on each of the six DataNode machines.
Answer: A,E
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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 the amount of memory.
- C. The ratio between the number of processor cores and total storage capacity.
- D. The ratio between the number of processor cores and number of disk drives.
- E. The ratio between the amount of memory and the total storage capacity.
Answer: C
The failure of which daemon makes HDFS unavailable on a cluster running MapReduce v1 (MRv1)?
- A. DataNode
- B. Application Manager
- C. NameNode
- D. Secondary NameNode
- E. Resource Manager
- F. Node Manager
Answer: C
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