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Cloudera CCA-410 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security & Data Governance | 15% | - Kerberos authentication - Data protection and backup - Authorization and permissions |
| Topic 2: Cluster Management & Monitoring | 25% | - Managing nodes and daemons - Starting/stopping services - Monitoring health and logs - Capacity and performance planning |
| Topic 3: HDFS Operations & High Availability | 20% | - NameNode and DataNode management - Replication and block management - HDFS High Availability (HA) - File system maintenance |
| Topic 4: Hadoop Cluster Installation & Configuration | 30% | - Network and OS tuning - HDFS architecture and configuration - MapReduce v1 configuration - CDH4 deployment |
| Topic 5: Troubleshooting & Optimization | 10% | - Performance tuning - Common error diagnosis - Job failure resolution |
Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:
Question 1
Your Hadoop cluster has 25 nodes with a total of 100 TB (4 TB per node) of raw disk space allocated HDFS storage. Assuming Hadoop's default configuration, how much data will you be able to store?
A. Approximately 25TB
B. Approximately 100TB
C. Approximately 33 TB
D. Approximately 10TB
Question 2
Which three file actions can execute as you write a file into HDFS?
A. You can delete the file
B. You can index the file
C. You can rename the file
D. You can update the files contents
E. You can move the file
Question 3
What four functions do scheduling algorithms perform on hadoop cluster?
A. support the implementation of service-level agreements for multiple cluster users
B. Run jobs at periodic times of the day
C. Ensure data locality by ordering map tasks so that they run on data local maps slots
D. Allow multiple users to share clusters in a predictable policy-guided manner
E. Reduce the job latencies in environment with multiple jobs of different sizes
F. allow short jobs to complete even when large, long jobs (consuming a lot of resources are running)
G. Reduce the total amount of computation necessary to complete a job.
Question 4
When planning a hadoop cluster, what general rule governs the hardware requirements between master nodes and slave nodes?
A. The master nodes requires more memory but less disk capacity
B. the master nodes requires less memory and fewer number disk drives than the slave nodes
C. The master nodes require more memory and greater disk capacity then the slave nodes
D. The master and slave nodes should have the same hardware configuration
E. The master nodes requires more memory and no disk drives
Question 5
A slave node in your cluster has 24GB of Ram and 12 physical processor cores on hyper threading-enabled processor. You set the value of mapped. child.java.opts to -Xmx1G, and the value of mapred.tasktracker.map.tasks.maximum to 12. What is the appropriate value to set for mapred.Tastracker.reduce.tasks.maximum?
A. 16.
B. 24
C. 12
D. 20
E. 2
F. 6
Solutions:
| Question 1 Answer: C | Question 2 Answer: A,C,E | Question 3 Answer: B,E,F,G | Question 4 Answer: A | Question 5 Answer: C |
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