1. c) Nullwritable . Big Data - Quiz 1. Which of the following statements about Hadoop is FALSE? 44. 28. C - Datanodes send block reports to only one of the namenodes. 1. (B) a) True. (C) a) Text . Which of the following statements about Hadoop is FALSE? Below is some multiple choice Questions corresponding to them are the choice of answers. 42. A. Hadoop enables distributed parallel processing of huge amounts of data across inexpensive computers. d) String . b) core-site.xml. Only one distributed cache file can be used in a Map Reduce job. (B) a) True . (a) It is a distributed framework (b) The main algorithm used in it is Map Reduce (c) It runs with commodity hard ware (d) All are true 2. B - One of them is active while the other one remains powered off. (p199) a. Hadoop extracts data from multiple tables that have a relationship b. Hadoop breaks a big data problem down into subproblems c. Hadoop enables distributed parallel processing of huge amounts of data across inexpensive computers d. ... False, if source and destination are in same cluster. A. Hadoop enables distributed parallel processing of huge amounts of data across inexpensive computers. B. Hadoop breaks a big data problem down into subproblems. Statement 2: Task tracker is the MapReduce component on the slave machine as there are multiple slave machines. Which of the following statements is NOT a characteristic of Hadoop? Which one of the following is false about Hadoop ? Which of the following Hadoop config files is used to define the heap size? B. Hadoop combines results into a smaller data set that is easier to analyze. Which of the following statements is NOT a characteristic of Hadoop? b) False . 45. This quiz will help you to revise the concepts of Apache Hadoop and will build up your confidence in Hadoop. Hadoop Framework is written in (a) Python (b) C++ (c) Java (d) Scala 3. Objective. After learning to Hadoop try your hands on Apache Hadoop MCQs and get to know your learning so far. 43. HaDoop does not have indicies so the entire dataset is copied in the join operation. B. Hadoop combines results into a smaller data set that is easier to analyze. D. Hadoop breaks a big data problem down into sub-problems. Answers to all these Hadoop Quiz Questions are also provided along with them, it will help you to brush up your Knowledge. Consider the following statements: Statement 1: The Job Tracker is hosted inside the master and it receives the job execution request from the client. Which of the following writables can be used to know value from a mapper/reducer? This set of Multiple Choice Questions & Answers (MCQs) focuses on “Big-Data”. ... Only one distributed cache file can be used in a Map Reduce job. This Apache Hadoop Quiz will help you to revise your Hadoop concepts and check your Big Data knowledge.It will increase your confidence while appearing for Hadoop interviews to land your dream Big Data jobs in India and abroad. Hope these questions are helpful for you. Which of following statement(s) are true about distcp command? C. Hadoop extracts data from multiple tables that have a relationship. C. Hadoop is an open source software framework. D - The standby node takes periodic checkpoints of active namenode’s namespace. Distributed cache files can’t be accessed in Reducer. A. Hadhoop enables distributed parallel processing of huge amounts of data across inexpensive computers. b) IntWritable . (B) a) True . b) False . b) False. Which command is used to check the status of all daemons running in the HDFS. A - When a client request comes, one of them chosen at random serves the request. (C ) a) hdfs-site.xml. 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