CCA-500 Exam Questions

For each YARN job, the Hadoop framework generates task log file. Where are Hadoop task log files stored?

You have a cluster running with the fair Scheduler enabled. There are currently no jobs running on the cluster, and you submit a job A, so that only job A is running on the cluster...

Each node in your Hadoop cluster, running YARN, has 64GB memory and 24 cores. Your yarn.site.xml has the following configuration: <property> <name>yarn.nodemanager.resource.memory-...

You want to node to only swap Hadoop daemon data from RAM to disk when absolutely necessary. What should you do?

You are configuring your cluster to run HDFS and MapReducer v2 (MRv2) on YARN. Which two daemons needs to be installed on your cluster's master nodes?

You observed that the number of spilled records from Map tasks far exceeds the number of map output records. Your child heap size is 1GB and your io.sort.mb value is set to 1000MB....

What does CDH packaging do on install to facilitate Kerberos security setup?

You want to understand more about how users browse your public website. For example, you want to know which pages they visit prior to placing an order. You have a server farm of 20...

Which three basic configuration parameters must you set to migrate your cluster from MapReduce 1 (MRv1) to MapReduce V2 (MRv2)?

Which three processes does HDFS High Availability (HA) enable on your cluster?

Your existing Hadoop cluster has 30 slave nodes, each of which has 4 x 2T hard drives. You plan to add another 10 nodes. How much disk space can your new nodes contain?

Choose which best describe a Hadoop cluster's block size storage parameters once you set the HDFS default block size to 64MB?

Identify four characteristics of a 300MB file that has been written to HDFS with block size of 128MB and all other Hadoop defaults unchanged?

You configure your hadoop cluster with mapreduce V1 (MRv1) along with HDFS high availability (HA) Quorum-based storage. On which nodes should you configure and run your journal nod...

Which three file actions can execute as you write a file into HDFS?

You set the value of dfs.block.size to 64MB in hdfs-site.xml on a client machine, but you set the same property to 128MB on your clusters name node. What happens when the client wr...

Which daemons instantiates JVM's to perform mapreduce processing in a cluster running mapreduce v1 (MRv1)?

You set mapred.tasktracker.reduce.tasks.maximum to a value of 4 on a cluster running mapreduce v1 (MRv1). How many reducers will run for any given job?

You configure your hadoop development cluster with both mapreduce frameworks, mapreduceV1 (MRv1) and mapreduce v2 (MRv2/YARN). You plan to run only one set of mapreduce daemons at...

Using hadoop's default settings, how much data will be able to store on your hadoop cluster if it is has 12 nodes with 4TB raw diskspace per node allocated to HDFS storage?

When requesting a file, how does HDFS retrieves the blocks associated with that file?

What four functions do scheduling algorithms perform on hadoop cluster?

What happens when a map task crashes while running a mapreduce job?

Which two updates occur when a client application opens a stream to begin a file write on a cluster running MapReduce v1 (MRv1)?

For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship between tasks and task templates?

What action occurs automatically on a cluster when a DataNode is marked as dead?

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

Which three distcp features can you utilize on a Hadoop cluster?

How does HDFS Federation help HDFS Scale horizontally?

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...

Your developers request that you enable them to use Hive on your Hadoop cluster. What do install and/or configure?

What metadata is stored on a DataNode when a block is written to it?

For each job, the Hadoop framework generates task log files. Where are Hadoop's task log files stored?

You are planning a Hadoop duster, and you expect to be receiving just under 1TB of data per week which will be stored on the cluster, using Hadoop's default replication. You decide...

Under which scenario would it be most appropriate to consider using faster (e.g 10 Gigabit) Ethernet as the network fabric for your Hadoop cluster?

Your cluster Mode size is set to 128MB. A client application (client application A) is writing a 500MB file to HDFS. After client application A has written 300MB of data, another c...

Your running a hadoop cluster with a name node on the host mynamenode. What are two ways you can determine available HDFS space in your cluster?

What is the rule governing the formatting of the underlying filesystem in the hadoop cluster?

Your cluster implements hdfs high availability (HA) your two namenodes are named hadoop01 and hadoop02. What occurs when you execute the command: Sudo -u hdfs haadmin -failover had...