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Hadoop
Zookeeper Interview
Quiz 1
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Q.1
Zookeeper essentially mirrors the _______ functionality exposed in the Linux kernel.
a) iread
b) inotify
c) iwrite
d) icount
Q.2
Point out the correct statement.
a) If we are to deploy Zookeeper in a distributed environment, we have to think about both the availability and scalability of the service
b) Chubby and Hbase are both much more than a distributed lock service
c) Given a cluster of Zookeeper servers, many can act as leader
d) None of the mentioned
Q.3
A ___________ server is a machine that keeps a copy of the state of the entire system and persists this information in local log files.
a) Master
b) Region
c) Zookeeper
d) All of the mentioned
Q.4
ZooKeeper’s architecture supports high ____________ through redundant services.
a) flexibility
b) scalability
c) availability
d) interactivity
Q.5
Point out the wrong statement.
a) Cluster-wide status centralization service is essential for management and serialization tasks across a large distributed set of servers
b) Within ZooKeeper, an application can create what is called a znode
c) The znode can be updated by any node in the cluster, and any node in the cluster can register to be informed of changes to that znode
d) None of the mentioned
Q.6
_________ serves distributed Lucene indexes in a grid environment.
a) Katta
b) Helprace
c) Neo4j
d) 101tec
Q.7
The Email & Apps team of ___________ uses ZooKeeper to coordinate sharding and responsibility changes in a distributed email client.
a) Katta
b) Helprace
c) Rackspace
d) None of the mentioned
Q.8
ZooKeeper is used for configuration, leader election in Cloud edition of ______________
a) Solr
b) Solur
c) Solar101
d) All of the mentioned
Q.9
Helprace is using ZooKeeper on a _______ cluster in conjunction with Hadoop and HBase.
a) 3-node
b) 4-node
c) 5-node
d) 6-node
Q.10
The ZooKeeper Data Directory contains files which are _________ copy of the znodes stored by a particular serving ensemble.
a) transient
b) read only
c) persistent
d) none of the mentioned
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