Learn with Cloudera : CCA-470 training material for 100% pass
Updated: May 27, 2026
No. of Questions: 87 Questions & Answers with Testing Engine
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Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
1. Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster running MapReduce v1 (MRv1):
A) The NameNode requires more memory but less disk capacity.
B) The NameNode requires more memory and no disk drives.
C) The NameNode requires less memory and less disk capacity than the DataNodes.
D) The NameNode and DataNodes should the same hardware configuration.
E) The NameNode requires more memory and requires greater disk capacity than the DataNodes.
2. Where does a MapReduce job store the intermediate data output from Mappers?
A) On the underlying filesystem of the local disk of the machine on which the Mapper ran.
B) On the underlying filesystem of the local disk machine on which the JobTracker ran.
C) Stores on the underlying filesystem of the local disk of the machine on which the Reducer.
D) In HDFS, in the job's output directory.
E) In HDFS, in temporary directory defined mapred.tmp.dir.
3. How does the NameNode know DataNodes are available on a cluster running MapReduce v1 (MRv1)
A) The NameNode send a broadcast across the network when it first starts, and DataNodes respond.
B) The NameNode broadcasts a heartbeat on the network on a regular basis, and DataNodes respond.
C) DataNodes heartbeat in the master on a regular basis.
D) DataNodes listed in the dfs.hosts file. The NameNode uses as the definitive list of available DataNodes.
4. In HDFS, you view a file with rw-r--r-- set as its permissions. What does this tell you about the file?
A) As a Filesystem in Userspace (FUSE), HDFS files are available to all user's on a cluster regardless of their underlying POSIX permissions.
B) The file cannot be run as a MapReduce job
C) The file cannot be deleted by anyone
D) The file's contents can be modified by the owner, but no-one else
E) The file cannot be deleted by anyone but the owner
5. What determines the number of Reduces that run a given MapReduce job on a cluster running MapReduce v1 (MRv1)?
A) It is set by the developer.
B) It is set by the Hadoop framework and is based on the number of InputSplits of the job.
C) It is set and fixed by the cluster administrator in mapred-site.xml. The number set always run for any submitted job.
D) It is set by the JobTracker based on the amount of intermediate data.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: C | Question # 4 Answer: E | Question # 5 Answer: A |
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