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