Big Data Computing Assignment 2 Answers NPTEL 2021:- In This Article, we have provided the Answers to Big Data Computing Assignment 2 Answers. It’s nice to see you on our site
Q1. Consider the following statements:Statement 1: The Job Tracker is hosted inside the master and it receives the job execution request from the client.Statement 2: Task 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
Answer:- Both statements are true
Q2. __________ is the slave/worker node and holds the user data in the form of Data Blocks.
- NameNode
- Data block
- Replication
- DataNode
Answer:- DataNode
Q3. _______________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.
- Name Node
- Data block
- Replication
- Data Node
Answer:- Name Node
Q4. The number of maps in MapReduce is usually driven by the total size of____________
- Inputs
- Outputs
- Tasks
- None of the mentioned
Answer:- inputs
Q5. True or False ? The main duties of task tracker are to break down the receive job that is big computations in small parts, allocate the partial computations that is tasks to the slave nodes monitoring the progress and report of task execution from the slave.
- True
- False
Answer:- False
Q6. Point out the correct statement in context of YARN:
- YARN is highly scalable.
- YARN enhances a Hadoop compute cluster in many ways
- YARN extends the power of Hadoop to incumbent and new technologies found within the data center
- All of the mentioned
Answer:- All of the mentioned
Q7. Consider the pseudo-code for MapReduce’s WordCount example (not shown here). Let’s now assume that you want to determine the frequency of phrases consisting of 3 words each instead of determining the frequency of single words. 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
Answer:- Only map()
Q8. The namenode knows that the datanode is active using a mechanism known as
- Heartbeats
- Datapulse
- h-signal
- Active-pulse
Answer:- Heartbeats
Q9. True or False ?HDFS performs replication, although it results in data redundancy?
- True
- False
Answer:- True
Q10. _______________function processes a key/value pair to generate a set of intermediate key/value pairs.
- Map
- Reduce
- Both Map and Reduce
- None of the mentioned
Answer:- Map
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Big Data Computing Assignment 2 Answers NPTEL 2021:- In This Article, we have provided the Answers to Big Data Computing Assignment 2 Answers. It’s nice to see you on our site