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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 9 of 11

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Q81.
Point out the correct statement.

a.

Interface FieldMapping is used for mapping of field

b.

Interface FieldMappable is used for mapping of field

c.

Sqoop is nothing but NoSQL to Hadoop

d.

Sqoop internally uses ODBC interface so it should work with any JDBC compatible database

Discuss
Answer: (b).Interface FieldMappable is used for mapping of field
Q82.
Point out the wrong statement.

a.

Sqoop is used to import complete database

b.

Sqoop is used to import selected columns from a particular table

c.

Sqoop is used to import selected tables

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q83.
Point out the correct statement.

a.

The sqoop command-line program is a wrapper which runs the bin/hadoop script shipped with Hadoop

b.

If $HADOOP_HOME is set, Sqoop will use the default installation location for Cloudera’s Distribution for Hadoop

c.

The active Hadoop configuration is loaded from $HADOOP_HOME/conf/, unless the $HADOOP_CONF_DIR environment variable is unset

d.

None of the mentioned

Discuss
Answer: (a).The sqoop command-line program is a wrapper which runs the bin/hadoop script shipped with Hadoop
Q84.
Point out the wrong statement.

a.

Avro data files are a compact, efficient binary format that provides interoperability with applications written in other programming languages

b.

By default, data is compressed while importing

c.

Delimited text also readily supports further manipulation by other tools, such as Hive

d.

None of the mentioned

Discuss
Answer: (b).By default, data is compressed while importing
Q85.
Point out the correct statement.

a.

Cassandra delivers continuous availability, linear scalability, and operational simplicity across many commodity servers

b.

Cassandra has a “masterless” architecture, meaning all nodes are the same

c.

Cassandra also provides customizable replication, storing redundant copies of data across nodes that participate in a Cassandra ring

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q86.
Point out the wrong statement.

a.

Cassandra supplies linear scalability, meaning that capacity may be easily added simply by adding new nodes online

b.

Cassandra 2.0 included major enhancements to CQL, security, and performance

c.

CQL for Cassandra 2.0.6 adds several important features including batching of conditional updates, static columns, and increased control over slicing of clustering columns

d.

None of the Mentioned

Discuss
Answer: (d).None of the Mentioned
Q87.
Point out the correct statement.

a.

Cassandra accommodates expensive, consumer SSDs extremely well

b.

Cassandra re-writes or re-reads existing data, and never overwrites the rows in place

c.

Cassandra uses a storage structure similar to a Log-Structured Merge Tree

d.

None of the mentioned

Discuss
Answer: (c).Cassandra uses a storage structure similar to a Log-Structured Merge Tree
Q88.
Point out the wrong statement.

a.

Cassandra provides fine-grained control of table storage on disk, writing tables to disk using separate table directories within each keyspace directory

b.

The hinted handoff feature and Cassandra conformance and conformance to the ACID

c.

Client utilities and application programming interfaces (APIs) for developing applications for data storage and retrieval are available

d.

None of the mentioned

Discuss
Answer: (b).The hinted handoff feature and Cassandra conformance and conformance to the ACID
Q89.
Point out the correct statement.

a.

Cassandra does not immediately remove data marked for deletion from disk

b.

A deleted column can reappear if you do not run node repair routinely

c.

The deletion of marked data occurs during compaction

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q90.
Point out the wrong statement.

a.

A hint indicates that a write needs to be replayed to one or more unavailable nodes

b.

When the cluster cannot meet the consistency level specified by the client, Cassandra does store a hint

c.

By default, hints are saved for three hours after a replica fails because if the replica is down longer than that, it is likely permanently dead

d.

All of the mentioned

Discuss
Answer: (b).When the cluster cannot meet the consistency level specified by the client, Cassandra does store a hint
Page 9 of 11

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