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Cloudera CCA-410 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Data Processing Tools and Ecosystem | - Data ingestion and processing tools
|
| Topic 2: HDFS Administration | - Filesystem management
|
| Topic 3: Hadoop Cluster Architecture (CDH4) | - Cluster roles and services
|
| Topic 4: Cluster Installation and Configuration | - CDH4 setup
|
| Topic 5: Cluster Monitoring and Troubleshooting | - System monitoring
|
| Topic 6: Security and Cluster Operations | - Security configuration
|
Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:
1. What additional capability does Ganglia provide to monitor a Hadoop?
A) Ability to monitor free task slots.
B) Ability to monitor NameNode memory usage.
C) Ability to monitor the amount of free space on HDFS.
D) Ability to monitor processor utilization.
E) Ability to monitor number of files in HDFS.
2. When planning a hadoop cluster, what general rule governs the hardware requirements between master nodes and slave nodes?
A) the master nodes requires less memory and fewer number disk drives than the slave nodes
B) The master nodes require more memory and greater disk capacity then the slave nodes
C) The master nodes requires more memory but less disk capacity
D) The master nodes requires more memory and no disk drives
E) The master and slave nodes should have the same hardware configuration
3. Which three processes does HDFS High Availability (HA) enable on your cluster?
A) Automatically 'fail over' between NameNodes if one goes down
B) Write data to two clusters simultaneously
C) Shut one NameNode down for maintenance without halting the cluster
D) Manually 'fail over' between NameNodes
E) Configure unlimited hot standby NameNode.
4. Using cloudera manager on CDH4 cluster running mapreduce V1(MRv1), you delete a tasktracker role instance from a host that also a runs a datanode role instance and a region server role instance.cloudera
Manager make changes to the cluster and prompts you to the accept the changes.
What other configuration option will cloudera manager automatically prompt you to change?
A) The option to failover to the instance by namenode
B) the option to immediately rebalance the cluster
C) The option to change java maximum heap sizes for the other role instances
D) the option to specify an alternate slave host to place the received data node role instance
5. How do you access the long messages a mapreduce application generates after you run it on your cluster?
A) You connect to the job tracker web UI and locate the details for your job this will include long messages
B) You remotely log in to any slave node in the cluster to browse your jobs log files in/var/log/hadoop/archive directly
C) You browse the currect working directory of the client machine from which You submitted the job
D) You browse the /logs directly in HDFS where all jobs log files as store
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A,C,D | Question # 4 Answer: D | Question # 5 Answer: C |
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