Cloudera CCA-410 : Cloudera Certified Administrator for Apache Hadoop CDH4

CCA-410 real exams

Exam Code: CCA-410

Exam Name: Cloudera Certified Administrator for Apache Hadoop CDH4

Updated: Sep 19, 2026

Q & A: 97 Questions and Answers

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Cloudera CCA-410 Exam Syllabus Topics:

SectionObjectives
Security and User Management- Authentication and authorization
  • 1. Kerberos integration (if applicable)
    • 2. HDFS permissions and ACLs
      HDFS Management- HDFS architecture and operations
      • 1. Replication and storage policies
        • 2. NameNode and DataNode management
          - Data lifecycle operations
          • 1. Backup and recovery strategies
            • 2. Data ingestion and movement
              MapReduce and Processing Framework- MapReduce v1 execution model (CDH4)
              • 1. Job scheduling and monitoring
                • 2. JobTracker and TaskTracker management
                  Cluster Architecture and Installation- Cloudera Manager administration
                  • 1. Configuration best practices
                    • 2. Service deployment and management
                      - CDH4 cluster planning and deployment
                      • 1. Node roles and cluster topology design
                        • 2. Installation and configuration of CDH components
                          Cluster Monitoring and Troubleshooting- Monitoring tools and logs
                          • 1. Cloudera Manager monitoring dashboards
                            • 2. Log analysis and diagnostics
                              - Performance tuning and optimization
                              • 1. Resource utilization optimization
                                • 2. Fault detection and recovery

                                  Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

                                  Question #1

                                  Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster running MapReduce v1 (MRv1):

                                  • A. The NameNode and DataNodes should the same hardware configuration.
                                  • B. The NameNode requires more memory and no disk drives.
                                  • C. The NameNode requires more memory but less disk capacity.
                                  • D. The NameNode requires more memory and requires greater disk capacity than the DataNodes.
                                  • E. The NameNode requires less memory and less disk capacity than the DataNodes.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: C  🗳️

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                                  Question #2

                                  Your Hadoop cluster contains nodes in three racks. Choose which scenario results if you leave the dfs.hosts property in the NameNode's configuration file empty (blank)?

                                  • A. No new can be added to the cluster until you specify them in the dfs.hosts file.
                                  • B. The NameNode will update dfs.hosts property to include machines running the DataNode daemon on the next NameNode reboot or with a dfsadmin -refreshNodes.
                                  • C. Any machine running the DataNode daemon can immediately join the cluster.
                                  • D. Presented with a blank dfs.hosts property, the NameNode will permit DataNodes specified in mapred.hosts to join the cluster.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: A  🗳️

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                                  Question #3

                                  Identify two features/issues that MapReduce v2 (MRv2/YARN) is designed to address:

                                  • A. Reduce complexity of the MapReduce APIs.
                                  • B. Single point of failure in the NameNode.
                                  • C. HDFS latency.
                                  • D. Resource pressure on the JobTrackr
                                  • E. Standardize on a single MapReduce API.
                                  • F. Ability to run frameworks other than MapReduce, such as MPI.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: D,F  🗳️

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                                  Question #4

                                  How does the NameNode know DataNodes are available on a cluster running MapReduce v1 (MRv1)

                                  • A. The NameNode broadcasts a heartbeat on the network on a regular basis, and DataNodes respond.
                                  • B. DataNodes heartbeat in the master on a regular basis.
                                  • C. The NameNode send a broadcast across the network when it first starts, and DataNodes
                                    respond.
                                  • D. DataNodes listed in the dfs.hosts file. The NameNode uses as the definitive list of available DataNodes.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: B  🗳️

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                                  Question #5

                                  Your cluster Mapreduce V1 (MVR1). What determines where blocks are return into HDFS client application?

                                  • A. The clients sends the data to the name node, which then writes those blocks to the data nodes
                                  • B. The client immediately to data nodes based on the clusters rack locality settings
                                  • C. the client writes immediately to data nodes at random
                                  • D. The client queries the name node, which returns information on which data nodes to use. Then client writes to those data nodes.
                                  Reveal Solution  Discussion  0

                                  Correct Answer: D  🗳️

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