← Back to exam page

CCA-500 – Cloudera Certified Administrator for Apache Hadoop (CCAH)

Loading demo links...

Showing 7–9 of 10 questions

Question 7

Your cluster has the following characteristics:

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

Select an option, then click Submit answer.

  • ○

    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.
  • ○

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

    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.
  • ○

    The client queries the NameNode which retrieves the block from the nearest DataNode to the client then passes that block back to the client.
Question 8

Your cluster implements HDFS High Availability (HA). Your two NameNodes are named nn01 and nn02. What occurs when you execute the command: hdfs haadmin –failover nn01 nn02?

Select an option, then click Submit answer.

  • ○

    nn02 is fenced, and nn01 becomes the active NameNode
  • ○

    nn01 is fenced, and nn02 becomes the active NameNode
  • ○

    nn01 becomes the standby NameNode and nn02 becomes the active NameNode
  • ○

    nn02 becomes the standby NameNode and nn01 becomes the active NameNode
Question 9

Which YARN daemon or service negotiations map and reduce Containers from the Scheduler, tracking their status and monitoring progress?

Select an option, then click Submit answer.

  • ○

    NodeManager
  • ○

    ApplicationMaster
  • ○

    ApplicationManager
  • ○

    ResourceManager