A. Each pools share of task slots may change throughout the course of job execution

B. Each pool gets 1/N of the total available tasks slots, where N is the no of jobs running on the cluster

C. Each pools share of the tasks slots remains static within the execution of any individual job

D. Pools get a dynamically-allocated share of the available task slots (subject to additional constraints)

E. Pools are assigned priorites.pools with higher priorities an executed b4 pools with lower priorities

F. Each pool gets 1/M of the total available tasks slots, where M is the no. of nodes in the cluster

A. Namenode, standby namenode and jobtracker

B. standby namenode, jobtracker, resourcemanager

C. On each datanode

D. Namenode

E. Jobtracker

F. standby namenode

G. Namenode and standby namenode

A. The status of the heartbeats of each DataNode.

B. An edit log of changes that have been made since the last snapshot compaction by the Secondary NameNode.

C. Names of the files in HDFS.

D. An edit log of changes that have been made since the last snapshot of the NameNode.

E. The directory structure of the files in HDFS.

F. File permissions of the files in HDFS.

G. A catalog of DataNodes and the blocks that are stored on them.

A. Three RAID 1 arrays

B. Six separate volumes

C. A RAID 5 array

D. A single Linux LVM (Logical volume Manager) volume

A. On the underlying filesystem of the local disk machine on which the JobTracker ran.

B. In HDFS, in the job's output directory.

C. On the underlying filesystem of the local disk of the machine on which the Mapper ran.

D. In HDFS, in temporary directory defined mapred.tmp.dir.

E. Stores on the underlying filesystem of the local disk of the machine on which the Reducer.

A. Approximately 33 TB

B. Approximately 10TB

C. Approximately 25TB

D. Approximately 100TB

A. Reducer don't write blocks into HDFS

B. The node on which the reducer is running will receive one copy of the each block. The other replicas will be placed on other nodes in the cluster

C. The 9 blocks will be return randomly to the nodes; some may receive multiple blocks some may receive none

D. The 9 blocks will be return to 3 nodes, such that each of the three get's one copy of each block

E. All 9 nodes will each receive exactly one block

A. You must modify the configuration files on only one of the DataNode machine

B. You must restart the NameNode daemon to apply the changes to the cluster

C. You must modify the configuration files on the NameNode only. DataNodes read their configuration from the master nodes.

D. You don't need to restart any daemon, as they will pick up changes automatically.

E. You must restart all six DataNode daemons to apply the changes to the cluster.

F. You must modify the configuration files on each of the six DataNode machines.

A. Resourcemanager

B. Applicationmaster

C. Namenode

D. Jobtracker

E. applicationmanager

F. Nodemanager

G. Datanode

H. Tasktracker

A. the master nodes requires less memory and fewer number disk drives than the slave nodes

B. The master nodes requires more memory but less disk capacity

C. The master nodes require more memory and greater disk capacity then the slave nodes

D. The master and slave nodes should have the same hardware configuration

E. The master nodes requires more memory and no disk drives