HADOOP QUIZ DESCRIPTION Total Questions −30 00 Max Time − 15:00 The number of maps is usually driven by the total size of ____________ outputs inputs tasks None of the mentioned A ________ node acts as the Slave and is responsible for executing a Task assigned to it by the JobTracker. MapReduce Mapper TaskTracker JobTracker _________ can best be described as a programming model used to develop Hadoop-based applications that can process massive amounts of data. MapReduce Mahout Oozie All of the mentioned What was Hadoop written in? Java (software platform) Perl Java (programming language) Lua (programming language) What license is Hadoop distributed under? Apache License 2.0 Apache License 2.0 Shareware Commercial ________ hides the limitations of Java behind a powerful and concise Clojure API for Cascading. Scalding HCatalog Cascalog All of the mentioned ________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer. Partitioner OutputCollector Reporter All of the mentioned Point out the correct statement. Applications can use the Reporter to report progress The Hadoop MapReduce framework spawns one map task for each InputSplit generated by the InputFormat for the job The intermediate, sorted outputs are always stored in a simple (key-len, key, value-len, value) format All of the mentioned Mapper and Reducer implementations can use the ________ to report progress or just indicate that they are alive. Partitioner OutputCollector Reporter All of the mentioned ______ is a framework for performing remote procedure calls and data serialization. Drill BigTop Avro Chukwa _________ has the world’s largest Hadoop cluster. Apple Datamatics Facebook None of the mentioned Point out the correct statement. Hadoop is an ideal environment for extracting and transforming small volumes of data Hadoop stores data in HDFS and supports data compression/decompression The Giraph framework is less useful than a MapReduce job to solve graph and machine learning None of the mentioned Hive also support custom extensions written in ____________ C# Java C C++ Point out the wrong statement. A MapReduce job usually splits the input data-set into independent chunks which are processed by the map tasks in a completely parallel manner The MapReduce framework operates exclusively on <key, value> pairs Applications typically implement the Mapper and Reducer interfaces to provide the map and reduce methods None of the mentioned _________ is the default Partitioner for partitioning key space. HashPar Partitioner HashPartitioner None of the mentioned Which of the following genres does Hadoop produce? Distributed file system JAX-RS Java Message Service Relational Database Management System _________ maps input key/value pairs to a set of intermediate key/value pairs. Mapper Reducer Both Mapper and Reducer None of the mentioned Point out the correct statement. Hive is not a relational database, but a query engine that supports the parts of SQL specific to querying data Hive is a relational database with SQL support Pig is a relational database with SQL support All of the mentioned __________ part of the MapReduce is responsible for processing one or more chunks of data and producing the output results. Maptask Mapper Task execution All of the mentioned Point out the wrong statement. Hardtop processing capabilities are huge and its real advantage lies in the ability to process terabytes & petabytes of data Hadoop uses a programming model called “MapReduce”, all the programs should conform to this model in order to work on the Hadoop platform The programming model, MapReduce, used by Hadoop is difficult to write and test All of the mentioned The Hadoop list includes the HBase database, the Apache Mahout ________ system, and matrix operations. Machine learning Pattern recognition Statistical classification Artificial intelligence Hadoop achieves reliability by replicating the data across multiple hosts and hence does not require ________ storage on hosts. RAID Standard RAID levels ZFS Operating system _______ is a utility which allows users to create and run jobs with any executables as the mapper and/or the reducer. Hadoop Strdata Hadoop Streaming Hadoop Stream None of the mentioned Point out the wrong statement. Reducer has 2 primary phases Increasing the number of reduces increases the framework overhead, but increases load balancing and lowers the cost of failures It is legal to set the number of reduce-tasks to zero if no reduction is desired The framework groups Reducer inputs by keys (since different mappers may have output the same key) in the sort stage Which of the following phases occur simultaneously? Shuffle and Sort Reduce and Sort Shuffle and Map All of the mentioned Which of the following platforms does Hadoop run on? Bare metal Debian Cross-platform Unix-like The Pig Latin scripting language is not only a higher-level data flow language but also has operators similar to ____________ SQL JSON XML All of the mentioned _______ jobs are optimized for scalability but not latency. Mapreduce Drill Oozie Hive As companies move past the experimental phase with Hadoop, many cite the need for additional capabilities, including _______________ Improved data storage and information retrieval Improved extract, transform and load features for data integration Improved data warehousing functionality Improved security, workload management, and SQL support IBM and ________ have announced a major initiative to use Hadoop to support university courses in distributed computer programming. Google Latitude Android (operating system) Google Variations Google Previous Next Total Question16 Wrong Answer13 Right Answer13
