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Cloudera CCA-500 Practice Test Questions Answers

Exam Code: CCA-500 (Updated 60 Q&As with Explanation)
Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH)
Last Update: 16-Sep-2025
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Questions Include:

  • Single Choice: 50 Q&A's
  • Multiple Choice: 10 Q&A's

  • CCA-500 Overview

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    CCA-500 Questions and Answers

    Question # 1

    You have A 20 node Hadoop cluster, with 18 slave nodes and 2 master nodes running HDFS High Availability (HA). You want to minimize the chance of data loss in your cluster. What should you do?

    A.

    Add another master node to increase the number of nodes running the JournalNode which increases the number of machines available to HA to create a quorum

    B.

    Set an HDFS replication factor that provides data redundancy, protecting against node failure

    C.

    Run a Secondary NameNode on a different master from the NameNode in order to provide automatic recovery from a NameNode failure.

    D.

    Run the ResourceManager on a different master from the NameNode in order to load-share HDFS metadata processing

    E.

    Configure the cluster’s disk drives with an appropriate fault tolerant RAID level

    Question # 2

    You need to analyze 60,000,000 images stored in JPEG format, each of which is approximately 25 KB. Because you Hadoop cluster isn’t optimized for storing and processing many small files, you decide to do the following actions:

    1. Group the individual images into a set of larger files

    2. Use the set of larger files as input for a MapReduce job that processes them directly with python using Hadoop streaming.

    Which data serialization system gives the flexibility to do this?

    A.

    CSV

    B.

    XML

    C.

    HTML

    D.

    Avro

    E.

    SequenceFiles

    F.

    JSON

    Question # 3

    Your Hadoop cluster contains nodes in three racks. You have not configured the dfs.hosts property in the NameNode’s configuration file. What results?

    A.

    The NameNode will update the dfs.hosts property to include machines running the DataNode daemon on the next NameNode reboot or with the command dfsadmin –refreshNodes

    B.

    No new nodes can be added to the cluster until you specify them in the dfs.hosts file

    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

    Question # 4

    You decide to create a cluster which runs HDFS in High Availability mode with automatic failover, using Quorum Storage. What is the purpose of ZooKeeper in such a configuration?

    A.

    It only keeps track of which NameNode is Active at any given time

    B.

    It monitors an NFS mount point and reports if the mount point disappears

    C.

    It both keeps track of which NameNode is Active at any given time, and manages the Edits file. Which is a log of changes to the HDFS filesystem

    D.

    If only manages the Edits file, which is log of changes to the HDFS filesystem

    E.

    Clients connect to ZooKeeper to determine which NameNode is Active

    Question # 5

    Your cluster has the following characteristics:

      A rack aware topology is configured and on

      Replication is set to 3

      Cluster block size is set to 64MB

    Which describes the file read process when a client application connects into the cluster and requests a 50MB file?

    A.

    The client queries the NameNode for the locations of the block, and reads all three copies. The first copy to complete transfer to the client is the one the client reads as part of hadoop’s speculative execution framework.

    B.

    The client queries the NameNode for the locations of the block, and reads from the first location in the list it receives.

    C.

    The client queries the NameNode for the locations of the block, and reads from a random location in the list it receives to eliminate network I/O loads by balancing which nodes it retrieves data from any given time.

    D.

    The client queries the NameNode which retrieves the block from the nearest DataNode to the client then passes that block back to the client.

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