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Welcome to the Hadoop IO MCQs Page

Dive deep into the fascinating world of Hadoop IO with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Hadoop IO, a crucial aspect of Hadoop. In this section, you will encounter a diverse range of MCQs that cover various aspects of Hadoop IO, 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 Hadoop IO. 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 Hadoop IO. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Hadoop IO MCQs | Page 6 of 6

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Q51.
Point out the correct statement.

a.

Snappy is licensed under the GNU Public License (GPL)

b.

BgCIK needs to create an index when it compresses a file

c.

The Snappy codec is integrated into Hadoop Common, a set of common utilities that supports other Hadoop subprojects

d.

None of the mentioned

Discuss
Answer: (c).The Snappy codec is integrated into Hadoop Common, a set of common utilities that supports other Hadoop subprojects
Q52.
Point out the wrong statement.

a.

From a usability standpoint, LZO and Gzip are similar

b.

Bzip2 generates a better compression ratio than does Gzip, but it’s much slower

c.

Gzip is a compression utility that was adopted by the GNU project

d.

None of the mentioned

Discuss
Answer: (a).From a usability standpoint, LZO and Gzip are similar
Q53.
Point out the correct statement.

a.

The HDFS architecture is compatible with data rebalancing schemes

b.

Datablocks support storing a copy of data at a particular instant of time

c.

HDFS currently support snapshots

d.

None of the mentioned

Discuss
Answer: (a).The HDFS architecture is compatible with data rebalancing schemes
Q54.
Point out the wrong statement.

a.

HDFS is designed to support small files only

b.

Any update to either the FsImage or EditLog causes each of the FsImages and EditLogs to get updated synchronously

c.

NameNode can be configured to support maintaining multiple copies of the FsImage and EditLog

d.

None of the mentioned

Discuss
Answer: (a).HDFS is designed to support small files only
Q55.
Point out the correct statement.

a.

Apache Avro is a framework that allows you to serialize data in a format that has a schema built in

b.

The serialized data is in a compact binary format that doesn’t require proxy objects or code generation

c.

Including schemas with the Avro messages allows any application to deserialize the data

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q56.
Point out the wrong statement.

a.

Java code is used to deserialize the contents of the file into objects

b.

Avro allows you to use complex data structures within Hadoop MapReduce jobs

c.

The m2e plugin automatically downloads the newly added JAR files and their dependencies

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Q57.
Point out the correct statement.

a.

Avro provides functionality similar to systems such as Thrift

b.

When Avro is used in RPC, the client and server exchange data in the connection handshake

c.

Apache Avro, Avro, Apache, and the Avro and Apache logos are trademarks of The Java Foundation

d.

None of the mentioned

Discuss
Answer: (a).Avro provides functionality similar to systems such as Thrift
Q58.
Point out the wrong statement.

a.

Apache Avro™ is a data serialization system

b.

Avro provides simple integration with dynamic languages

c.

Avro provides rich data structures

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q59.
Point out the correct statement.

a.

Records use the type name “record” and support three attributes

b.

Enum are represented using JSON arrays

c.

Avro data is always serialized with its schema

d.

All of the mentioned

Discuss
Answer: (a).Records use the type name “record” and support three attributes
Q60.
Point out the wrong statement.

a.

Record, enums and fixed are named types

b.

Unions may immediately contain other unions

c.

A namespace is a dot-separated sequence of such names

d.

All of the mentioned

Discuss
Answer: (b).Unions may immediately contain other unions
Page 6 of 6

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