최신Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) - CCA-470무료샘플문제

A. Reducers don't write blocks into HDFS

B. The Reducer will generate twelve blocks and write them to slave nodes nearest the node on which the Reducer runs.

C. The slave node on which the Reducer runs gets the first copy of every block written. Other block replicas will be placed on other nodes.

D. The Reducer will generate nine blocks and write them randomly to nodes throughout the cluster.

A. Client application B must wait until the entire file has been written, and will then read its entire contents.

B. Client application B returns an error

C. Client application on B can read the 300MB that has been written so far.

D. Application B can read 256MB of the file

A. They may be formatted in nay Linux filesystem

B. They must be formatted as either ext3 or ext4

C. They must be formatted as HDFS

D. They must not be formatted - - HDFS will format the filesystem automatically

A. Secondary NameNode

B. Resource Manager

C. Node Manager

D. Application Manager

E. DataNode

F. NameNode

A. When job A gets submitted, it consumes all the task slot

B. When job A gets submitted, it doesn't consume all the task slot

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

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

A. Capacity Scheduler

B. FIFO Scheduler

C. Completely Fair Scheduler (CFS)

D. Fair Scheduler

A. Information on the file's location in HDFS.

B. Checksums for the data in the block, as a separate file.

C. Node location of each block belonging to the same namespace.

D. None. Only the block itself is written.

A. 48 1.5TB disk drives in a JBOD configuration

B. Four 1TB disk drives in a RAID configuration

C. 48 1.5 TB disk drives in a RAID configuration

D. One 1TB disk drive

E. Four 1TB disk drives in a JBOD configuration

A. The choice of operating system isn't very important for a Hadoop cluster.

B. Linux and Solaris/OpenSolaris are preferable to Windows. Solaris running on SPARC hardware is the preferred Hadoop slave node configuration.

C. Linux is preferable to Windows and Solaris/OpenSolaris. Some Linux distributions are intended for cluster environments more than others.

D. Linux is preferable to Windows and Solaris/OpenSolaris, but the choice of Linux distribution is unimportant when planning a Hadoop cluster.