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Cloudera CCA-470 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Hadoop Ecosystem Tools | - Data ingestion tools
|
| HDFS Administration | - Maintenance and troubleshooting
|
| Hadoop Cluster Architecture | - Core Hadoop components overview
|
| Cluster Installation and Upgrade (CDH4) | - Upgrade process
|
| YARN and Resource Management | - Resource scheduling
|
| Security and Cluster Management | - Authentication and authorization
|
Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
Question 1
A client wants to read a file from HDFS. How does the data get from the DataNodes to the client?
A. The NameNode reads the blocks from the DataNodes, and caches them. Then, the application reads the blocks from the NameNode.
B. The blocks are sent to a single DataNode, then the application reads the blocks from that Data Node.
C. The application reads the blocks directly from the DataNodes.
Question 2
Which of the following statements arc accurate in describing features of Hadoop rack awareness? (Choose 2)
A. Configuration of rack awareness is accomplished using a configuration file. You cannot use a rack topology script.
B. Even for small clusters on a single rack, configuring rack awareness will improve performance.
C. Rack location is considered in the HDFS block placement policy.
D. Hadoop gives preference to intra-rack data transfer In order to conserve bandwidth.
E. HDFS is rack aware but MapReduce daemons are not.
Question 3
Which three distcp features can you utilize on a Hadoop cluster?
A. Use distcp to copy HBase table files.
B. Use distcp to run an internal MapReduce job to copy files.
C. Use distcp to copy physical blocks from the source to the target destination in your cluster.
D. Use distcp to copy data between directories inside the same cluster.
E. Use distcp to copy files only between two clusters or more. You cannot use distcp to copy data between directories inside the same cluster.
Question 4
Which of the following describe the functions of a scheduling algorithm? (Choose 4)
A. Run jobs at periodic times of the day.
B. Allow short Jobs to complete even when large, long jobs (consuming a lot of resources) are running.
C. Reduce job latencies in an environment with multiple jobs of different sizes.
D. Reduce the total amount of computation necessary to complete a job.
E. Support the implementation of service-level agreements for multiple cluster users.
F. Allow multiple users to share clusters in a predictable, policy-guided manner.
Question 5
Which of the following statements is the most accurate about the choice of operating systems to run on a Hadoop cluster?
A. Linux and Solaris/OpenSolaris are preferable to Windows. Solaris running on SPARC hardware is the preferred Hadoop slave node configuration.
B. The choice of operating system isn't very important for a Hadoop cluster.
C. Linux is preferable to Windows and Solaris/OpenSolaris, but the choice of Linux distribution is unimportant when planning a Hadoop cluster.
D. Linux is preferable to Windows and Solaris/OpenSolaris. Some Linux distributions are intended for cluster environments more than others.
Solutions:
| Question 1 Answer: C | Question 2 Answer: C,D | Question 3 Answer: A,B,D | Question 4 Answer: A,C,D,F | Question 5 Answer: D |
