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

문제1

On a cluster running MapReduce v2 (MRv2) on YARN, a MapReduce job is given a directory of 10 plain text files as its
input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?

A. 30

B. We cannot say; the number of Mappers is determined by the developer

C. We cannot say; the number of mappers is determined by the ApplicationMaster

D. 3

E. We cannot say; the number of Mappers is determined by the ResourceManager

F. 10

정답: F

문제2

You are planning a Hadoop cluster and considering implementing 10 Gigabit Ethernet as the network fabric. Which
workloads benefit the most from faster network fabric?

A. When your workload consists of processor-intensive tasks

B. When your workload generates a large amount of output data, significantly larger than the amount of intermediate
data

C. When your workload consumes a large amount of input data, relative to the entire capacity if HDFS

D. When your workload generates a large amount of intermediate data, on the order of the input
data itself

정답: B

문제3

Which process instantiates user code, and executes map and reduce tasks on a cluster running MapReduce v2 (MRv2)
on YARN?

A. NameNode

B. TaskTracker

C. ApplicationMaster

D. NodeManager

E. JobTracker

F. DataNode

G. ResourceManager

정답: E

문제4

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

B. Any machine running the DataNode daemon can immediately join the cluster

C. Presented with a blank dfs.hosts property, the NameNode will permit DataNodes specified in mapred.hosts to join
the cluster

D. 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

정답: D

문제5

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.
A while later, you submit Job B.now Job A and Job B are running on the cluster at the same time.
How will the Fair Scheduler handle these two jobs?

A. When Job B gets submitted, Job A has to finish first, before job B can gets scheduled.

B. When Job B gets submitted, it will get assigned tasks, while job A continues to run with fewer tasks.

C. When Job A gets submitted, it consumes all the task slots.

D. When Job A gets submitted, it doesn't consumes all the task slots.

정답: A

문제6

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?

A. nn02 becomes the standby NameNode and nn01 becomes the active NameNode

B. nn01 is fenced, and nn02 becomes the active NameNode

C. nn01 becomes the standby NameNode and nn02 becomes the active NameNode

D. nn02 is fenced, and nn01 becomes the active NameNode

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

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

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