NPTEL Big Data Computing Assignment 2 Answers

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NPTEL Big Data Computing Assignment 2


NPTEL Big Data Computing Assignment 2 Answer 2022 :-


Q1. ______works as a master server that manages the file system namespace and basically regulates access to these files from clients, and it also keeps track of where the data is on the Data Nodes and where the blocks are distributed essentially.

  • Data Node
  • Name Node
  • Data block
  • Replication

Q.2. When a client contacts the name node for accessing a file, the name node responds with

  • Size of the file requested
  • Block ID of the file requested
  • Block ID and hostname of any one of the data nodes containing that block
  • Block ID and hostname of all the data nodes containing that block.

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Q.3. The namenode knows that the datanode is active using a mechanism known as:

  • datapulse
  • h-signal
  • heartbeats
  • Active-pulse

Q.4. For reading/writing data to/from HDFS, clients first connect to ___

  • NameNode
  • Checkpoint Node
  • DataNode
  • None of the mentioned

Q.5. True or False ?

HDFS performs replication, although it results in data redundancy?

  • True
  • False

Q.6. Consider the following statements:

Statement 1: Task Tracker is hosted inside the master and it receives the job execution request from the client.
Statement 2: 
Job tracker is the MapReduce component on the slave machine as there are multiple slave machines.

  • Only statement 1 is true
  • Only statement 2 is true
  • Both statements are true
  • Both statements are false

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Q.7. Consider the following statements:

Statement 1: MapReduce is a programming model and an associated implementation for processing and generating large data sets.

Statement 2:Users specify a map function that processes a key/value pair to generate a set of intermediate key/value pairs, and a reduce function that merges all intermediate values associated with the same intermediate key.

  • Only statement 1 is true
  • Only statement 2 is true
  • Both statements are true
  • Both statements are false

Q.8. Point out the correct statement in context of YARN:

  • YARN extends the power of Hadoop to incumbent and new technologies found within the data center
  • YARN is highly scalable
  • YARN enhances a Hadoop compute cluster in many ways.
  • All of the mentioned

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Q.9. Apache Hadoop YARN stands for:

  • Yet Another Reserve Negotiator
  • Yet Another Resource Negotiator
  • Yet Another Resource Network
  • Yet Another Resource Manager

Q.10. Consider the pseudo-code for MapReduce’s WordCount example (not shown here). Let’s now assume that you want to determine the average length of all the words in a text file. Which part of the pseudo-code do you need to adapt?

  • Only map()
  • Only reduce()
  • map() and reduce()
  • The code does not have to be changed


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About NPTEL Soft Skills Course: 

Soft Skills, a buzz word today has attracted the attention of students, professionals and entrepreneurs all over the world. Employability, being the major concern today, every individual aims at getting coveted jobs. Employability today is commensurate with proving multiple skills in varied situations in a fast changing world. Hence, everyone aspiring for jobs today has to prove one’s mettle in various situations where one requires to be armed with different skills, which, collectively come under Soft Skills.


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The course structure and content covers, over a period of 12 weeks:

  • Week 1: Introduction to Soft Skills, Aspects of Soft Skills, Effective Communication Skills, Classification of Communication, Personality Development 
  • Week 2: Positive Thinking, Telephonic Communication Skills, Communicating without Words, Paralanguage
  • Week 3: Proxemics,  Haptics: The Language of Touch, Meta-communication, Listening Skills, Types of Listening
  • Week 4: Negotiation Skills, Culture as Communication, Organizational Communication
  • Week 5: Communication Breakdown, Advanced Writing Skills, Principles of Business Writing
  • Week 6: Business Letters, Business Letters: Format and Style, Types of Business Letter
  • Week 7: Writing Reports, Types of Report, Strategies for Report Writing, Evaluation and Organization of Data
  • Week 8: Structure of Report, Report Style, Group Communication Skills
  • Week 9: Leadership Skills, Group Discussion, Meeting Management, Adaptability & Work Ethics
  • Week 10:Advanced Speaking Skills, Oral Presentation, Speeches & Debates, Combating Nervousness, Patterns & Methods of Presentation, Oral Presentation: Planning & Preparation
  • Week 11:Making Effective Presentations, Speeches for Various Occasions, Interviews, Planning & Preparing: Effective Résumé,
  • Week 12: Facing Job Interviews, Emotional Intelligence & Critical Thinking, Applied Grammar

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