Describe the Hadoop Ecosystem and Related Product Use Cases DATA-SCIENCE-FOUNDATIONS Practice Questions (Page 8)

Questions 36–40

1. 36application · medium

   A retail company stores years of transaction data in a relational database. They want to run complex analytical queries that join this data with clickstream logs stored in HDFS. The analytics team is comfortable with SQL. Which combination of Hadoop ecosystem components should they use?

   • AKafka to ingest the relational data, then HBase for SQL-like queries
   • BSqoop to import the relational data into HDFS, then Hive to run SQL-like queries over both datasets
   • COozie to transfer the relational data, then Spark SQL for queries
   • DFlume to stream the relational data into HDFS, then Pig to run SQL-like queries
   Reveal Solution Discussion Select an answer first
2. 37foundation · easy

   Which Hadoop module provides the common utilities and libraries that other Hadoop components depend on?

   • AHadoop Common
   • BHDFS
   • CMapReduce
   • DYARN
   Reveal Solution Discussion Select an answer first
4. 38foundation · easy

   What is the primary use case for Apache Kafka?

   • ACollecting and aggregating log data from multiple sources
   • BTransferring data between Hadoop and relational databases
   • CReal-time data streaming and messaging
   • DSQL-like querying and data warehousing
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5. 39foundation · easy

   In HDFS architecture, which node is responsible for storing the actual data blocks?

   • ADataNode
   • BNameNode
   • CNodeManager
   • DResourceManager
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6. 40foundation · easy

   What is the primary purpose of the MapReduce programming model?

   • ATo manage cluster resources and scheduling
   • BTo provide a SQL-like query interface
   • CTo store data reliably across multiple nodes
   • DTo process large datasets in parallel across a cluster
   Reveal Solution Discussion Select an answer first