Cloudera Certified Administrator for Apache Hadoop (CCAH) - CCA-500 Exam Practice Test

A. mapreduce.map.java.opts=-Xms3072m

B. mapreduce.map.java.opts=-Xmx3072m

C. yarn.application.child.java.opts=-Xmx3072m

D. yarn.application.child.java.opts=-Xsx3072m

A. In HDFS, in the directory of the user who generates the job

B. Cached by the NodeManager managing the job containers, then written to a log directory on the NameNode

C. On the local disk of the slave mode running the task

D. Cached in the YARN container running the task, then copied into HDFS on job completion

A. Fair Scheduler

B. Capacity Scheduler

C. YARN doesn't configure a default scheduler, you must first assign an appropriate scheduler class in yarn-site.xml

D. FIFO Scheduler

A. Complexity Fair Scheduler (CFS)

B. Fair Scheduler

C. Capacity Scheduler

D. FIFO Scheduler

A. User authentication on all remote procedure calls (RPCs)

B. Authentication for user access to the cluster against a central server

C. Encryption for data during transfer between the Mappers and Reducers

D. Encryption for data on disk ("at rest")

E. Root access to the cluster for users hdfs and mapred but non-root access for clients

A. They will see the file with a ._COPYING_ extension on its name. If they attempt to view the file, they will get a
ConcurrentFileAccessException until the entire file write is completed on the cluster

B. They will see the file with a ._COPYING_ extension on its name. If they view the file, they will see contents of the
file up to the last completed block (as each 64MB block is written, that block becomes available)

C. They will see the file with its original name. If they attempt to view the file, they will get a
ConcurrentFileAccessException until the entire file write is completed on the cluster

D. The directory will appear to be empty until the entire file write is completed on the cluster