HADOOP QUIZ DESCRIPTION Total Questions −30 00 Max Time − 15:00 What was Hadoop named after? Creator Doug Cutting’s favorite circus act Cutting’s high school rock band The toy elephant of Cutting’s son A sound Cutting’s laptop made during Hadoop development _______ is the most popular high-level Java API in Hadoop Ecosystem Scalding HCatalog Cascalog Cascading Mapper implementations are passed the JobConf for the job via the ________ method. JobConfigure.configure JobConfigurable.configure JobConfigurable.configurable None of the mentioned 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 the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution. Map Parameters JobConf MemoryConf 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 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 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 ______ is a framework for performing remote procedure calls and data serialization. Drill BigTop Avro Chukwa What license is Hadoop distributed under? Apache License 2.0 Apache License 2.0 Shareware Commercial Which of the following platforms does Hadoop run on? Bare metal Debian Cross-platform Unix-like _______ is a platform for constructing data flows for extract, transform, and load (ETL) processing and analysis of large datasets. Pig Latin Oozie Pig Hive _________ maps input key/value pairs to a set of intermediate key/value pairs. Mapper Reducer Both Mapper and Reducer None of the mentioned Which of the following phases occur simultaneously? Shuffle and Sort Reduce and Sort Shuffle and Map All of the mentioned Point out the correct statement. Hadoop do need specialized hardware to process the data Hadoop 2.0 allows live stream processing of real-time data In the Hadoop programming framework output files are divided into lines or records None of the mentioned The output of the _______ is not sorted in the Mapreduce framework for Hadoop. Cascader Cascader Scalding None 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 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 According to analysts, for what can traditional IT systems provide a foundation when they’re integrated with big data technologies like Hadoop? Big data management and data mining Data warehousing and business intelligence Management of Hadoop clusters Collecting and storing unstructured data 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 _______ function is responsible for consolidating the results produced by each of the Map() functions/tasks. Reduce Map Reducer All of the mentioned The right number of reduces seems to be ____________ 0.90 0.80 0.36 0.95 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 Point out the wrong statement. Elastic MapReduce (EMR) is Facebook’s packaged Hadoop offering Amazon Web Service Elastic MapReduce (EMR) is Amazon’s packaged Hadoop offering Scalding is a Scala API on top of Cascading that removes most Java boilerplate 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 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 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 The number of maps is usually driven by the total size of ____________ outputs inputs tasks None of the mentioned 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 Which of the following genres does Hadoop produce? Distributed file system JAX-RS Java Message Service Relational Database Management System Previous Next Total Question16 Wrong Answer13 Right Answer13
