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Welcome to the ZooKeeper,Sqoop and Cassandra MCQs Page

Dive deep into the fascinating world of ZooKeeper,Sqoop and Cassandra with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of ZooKeeper,Sqoop and Cassandra, a crucial aspect of Hadoop. In this section, you will encounter a diverse range of MCQs that cover various aspects of ZooKeeper,Sqoop and Cassandra, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Hadoop.

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Check out the MCQs below to embark on an enriching journey through ZooKeeper,Sqoop and Cassandra. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Hadoop.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of ZooKeeper,Sqoop and Cassandra. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

ZooKeeper,Sqoop and Cassandra MCQs | Page 8 of 11

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Q71.
_________ can be configured per table for non-QUORUM consistency levels.

a.

Read repair

b.

Read damage

c.

Write repair

d.

None of the mentioned

Discuss
Answer: (a).Read repair
Q72.
If the table has been configured with the __________ property, the coordinator node for the read request will retry the request with another replica node.

a.

rapid_retry

b.

speculative_retry

c.

speculative_rapid

d.

none of the mentioned

Discuss
Answer: (b).speculative_retry
Q73.
Point out the correct statement.

a.

ZooKeeper can achieve high throughput and high latency numbers

b.

The fault tolerant ordering means that sophisticated synchronization primitives can be implemented at the client

c.

The ZooKeeper implementation puts a premium on high performance, highly available, strictly ordered access

d.

All of the mentioned

Discuss
Answer: (c).The ZooKeeper implementation puts a premium on high performance, highly available, strictly ordered access
Q74.
Point out the wrong statement.

a.

Distributed applications use SQL to store important configuration information

b.

The service maintains a record of all transactions, which can be used for higher-level abstractions, like synchronization primitives

c.

ZooKeeper maintains a standard hierarchical name space, similar to files and directories

d.

ZooKeeper provides superior reliability through redundant services

Discuss
Answer: (d).ZooKeeper provides superior reliability through redundant services
Q75.
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

Discuss
Answer: (a).If we are to deploy Zookeeper in a distributed environment, we have to think about both the availability and scalability of the service
Q76.
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

Discuss
Answer: (d).None of the mentioned
Q77.
Point out the correct statement.

a.

All znodes are ephemeral, which means they are describing a “temporary” state

b.

/hbase/replication/state contains the list of RegionServers in the main cluster

c.

Offline snapshots are coordinated by the Master using ZooKeeper to communicate with the RegionServers using a two-phase-commit-like transaction

d.

None of the mentioned

Discuss
Answer: (a).All znodes are ephemeral, which means they are describing a “temporary” state
Q78.
Point out the wrong statement.

a.

All the znodes are prefixed using the default /hbase location

b.

ZooKeeper provides an interactive shell that allows you to explore the ZooKeeper state

c.

The znodes that you’ll most often see are the ones that coordinate operations like Region Assignment

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q79.
Point out the correct statement.

a.

BooleanSerializer is used to parse string representations of boolean values into boolean scalar types

b.

BlobRef is a wrapper that holds a BLOB either directly

c.

BooleanParse is used to parse string representations of boolean values into boolean scalar types

d.

All of the mentioned

Discuss
Answer: (b).BlobRef is a wrapper that holds a BLOB either directly
Q80.
Point out the wrong statement.

a.

Abstract base class that holds a reference to a Blob or a Clob

b.

ACCESSORTYPE is the type used to access this data in a streaming fashion

c.

CONTAINERTYPE is the type used to hold this data (e.g., BytesWritable)

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Page 8 of 11

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