Vendor: Cloudera
Certifications: CCAH
Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH)
Exam Code: CCA-500
Total Questions: 60 Q&As
Last Updated: Sep 17, 2023
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CCA-500 Online Practice Questions and Answers
Which two features does Kerberos security add to a Hadoop cluster? (Choose two)
A. User authentication on all remote procedure calls (RPCs)
B. Encryption for data during transfer between the Mappers and Reducers
C. Encryption for data on disk ("at rest")
D. Authentication for user access to the cluster against a central server
E. Root access to the cluster for users hdfs and mapred but non-root access for clients
You have a Hadoop cluster HDFS, and a gateway machine external to the cluster from which clients submit jobs. What do you need to do in order to run Impala on the cluster and submit jobs from the command line of the gateway machine?
A. Install the impalad daemon statestored daemon, and daemon on each machine in the cluster, and the impala shell on your gateway machine
B. Install the impalad daemon, the statestored daemon, the catalogd daemon, and the impala shell on your gateway machine
C. Install the impalad daemon and the impala shell on your gateway machine, and the statestored daemon and catalogd daemon on one of the nodes in the cluster
D. Install the impalad daemon on each machine in the cluster, the statestored daemon and catalogd daemon on one machine in the cluster, and the impala shell on your gateway machine
E. Install the impalad daemon, statestored daemon, and catalogd daemon on each machine in the cluster and on the gateway node
You have a cluster running with a FIFO scheduler enabled. You submit a large job A to the cluster, which
you expect to run for one hour. Then, you submit job B to the cluster, which you expect to run a couple of
minutes only.
You submit both jobs with the same priority.
Which two best describes how FIFO Scheduler arbitrates the cluster resources for job and its tasks?
(Choose two)
A. Because there is a more than a single job on the cluster, the FIFO Scheduler will enforce a limit on the percentage of resources allocated to a particular job at any given time
B. Tasks are scheduled on the order of their job submission
C. The order of execution of job may vary
D. Given job A and submitted in that order, all tasks from job A are guaranteed to finish before all tasks from job B
E. The FIFO Scheduler will give, on average, and equal share of the cluster resources over the job lifecycle
F. The FIFO Scheduler will pass an exception back to the client when Job B is submitted, since all slots on the cluster are use
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