Introduction To Hadoop — Part 1 MCQs with Explanations

The correct answer is B: HDFS . Let's break down why: HDFS stands for Hadoop Distributed File System . This is the heart of Hadoop's storage capabilities. Think of it like this: if you have a huge book (your data) that's too big for one bookshelf (a single computer), HDFS is designed to cleverly split that book into many parts and store those parts across many different bookshelves (computers) in a cluster. This is what we call distributed storage . It's designed to be very reliable and handle very large files across many machines. Now, let's look at why the other options are not responsible for distributed storage: A: YARN (Yet Another Resource Negotiator) is like the operating system of Hadoop. Its main job is to manage the resources (like CPU and memory) on your cluster and schedule your applications (like MapReduce jobs) to run. It doesn't store the data itself; it manages how jobs use the resources. C: MapReduce is a programming model and processing engine. It's what Hadoop uses to process and analyze the large amounts of data stored in HDFS. So, while HDFS stores the data, MapReduce processes it. It's for computing, not for storing. D: Hive is a data warehousing tool that sits on top of Hadoop. It lets you easily query and analyze data stored in HDFS using a language similar to SQL (called HiveQL). It's an analysis tool that *uses* the data stored in HDFS, but it's not a storage component itself. In summary, when you hear distributed storage in Hadoop, HDFS is the core component that comes to mind.

Batch processing of large datasets is the correct answer to “What is Hadoop primarily designed for”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Java is the correct answer to “Which programming language is commonly used for writing MapReduce programs”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Hadoop Distributed File System is the correct answer to “What does HDFS stand for in the context of Hadoop”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Manage metadata of HDFS is the correct answer to “In Hadoop, what is the purpose of a NameNode”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

3 is the correct answer to “What is the default replication factor in HDFS”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Sqoop is the correct answer to “Which Apache project is used for data ingestion from relational databases”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

A programming model and processing engine is the correct answer to “What does the term "MapReduce" refer to in Hadoop”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Manage computation resources is the correct answer to “In Hadoop, what is the primary role of the ResourceManager in YARN”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Hive is the correct answer to “Which Hadoop component is suitable for handling and processing structured data”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Configuration management is the correct answer to “What is Apache ZooKeeper used for in Hadoop”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Cluster management and monitoring is the correct answer to “What is the purpose of Apache Ambari in the Hadoop ecosystem”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Apache Spark is the correct answer to “Which Apache project is commonly used for real-time data processing in Hadoop”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

The software stack built on top of Hadoop is the correct answer to “What does the term "Hadoop ecosystem" refer to”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Manages task execution in MapReduce jobs is the correct answer to “In Hadoop, what does the term "JobTracker" refer to”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Store a backup of the entire HDFS metadata is the correct answer to “What is the purpose of the Hadoop Secondary NameNode”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Oozie is the correct answer to “Which Apache project is used for workflow automation in Hadoop”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Store and manage large volumes of data is the correct answer to “What is the main function of the Hadoop Distributed File System (HDFS)”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Ambari is the correct answer to “Which Hadoop ecosystem tool is used for managing and monitoring Hadoop clusters”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

A phase in MapReduce processing is the correct answer to “In the context of Hadoop, what does the term "shuffle" refer to”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Configuration management is the correct answer to “What is the primary function of Apache ZooKeeper in Hadoop”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Functional programming is the correct answer to “Which programming paradigm is central to Hadoop processing”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Manage computation resources is the correct answer to “What is the purpose of the ResourceManager in Hadoop YARN”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Hive is the correct answer to “Which Hadoop ecosystem tool is used for querying and analyzing large datasets”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Manage task execution in MapReduce jobs is the correct answer to “What is the role of the Hadoop JobTracker in MapReduce”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Store data blocks is the correct answer to “In Hadoop, what is the purpose of the DataNode”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Flume is the correct answer to “Which Apache project in Hadoop is designed for real-time data streaming”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Manage resource allocation is the correct answer to “What is the function of the Hadoop ResourceManager”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Store and manage large volumes of data is the correct answer to “In Hadoop, what is the purpose of the Hadoop Distributed File System (HDFS)”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

ResourceManager is the correct answer to “Which component of Hadoop is responsible for resource management”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Avro is the correct answer to “. . . . . . . . is a framework for performing remote procedure calls and data serialization.”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Real-time is the correct answer to “All of the following accurately describe Hadoop, EXCEPT . . . . . . . .”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

OpenSolaris is the correct answer to “Sun also has the Hadoop Live CD . . . . . . . . project, which allows running a fully functional Hadoop cluster using a live CD.”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

MapReduce is the correct answer to “Above the file systems comes the . . . . . . . . engine, which consists of one Job Tracker, to which client applications submit MapReduce jobs.”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Cascading is the correct answer to “. . . . . . . . is the most popular high-level Java API in Hadoop Ecosystem”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Apache License 2.0 is the correct answer to “What license is Hadoop distributed under”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

'Project Prism' is the correct answer to “Facebook Tackles Big Data With . . . . . . . . based on Hadoop.”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Facebook is the correct answer to “. . . . . . . . has the world's largest Hadoop cluster.”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Google is the correct answer to “IBM and . . . . . . . . have announced a major initiative to use Hadoop to support university courses in distributed computer programming.”. This question is standard in competitive examination syllabi for Introduction To Hadoop.

Improved security, workload management, and SQL support is the correct answer to “As companies move past the experimental phase with Hadoop, many cite the need for additional capabilities, including . . . . . . . .”. This question is standard in competitive examination syllabi for Introduction To Hadoop.