Q. How does HDFS ensure fault tolerance for data blocks?

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Q. What is the purpose of the replication factor in HDFS?

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Q. What is the default block size in HDFS?

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Q. What is the role of the namenode in HDFS?

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Q. What is the primary design goal of the Hadoop Distributed File System (HDFS)?

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Q. Why does the Hadoop master represent a single point of failure?

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Q. What is the default number of map and reduce slots on a tasktracker in Hadoop?

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Q. How does the jobtracker divide input data in a Hadoop MapReduce cluster?

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Q. In a MapReduce job, what is the unit of work that users submit to the jobtracker?

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Q. What is the role of the master node in a Hadoop MapReduce cluster?

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Q. What is the primary purpose of the HBase database?

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Q. What is the key advantage of Hadoop's distributed file system, HDFS?

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Q. How does Skynet handle worker node failures in its MapReduce implementation?

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Q. What is the primary language used for writing MapReduce programs in Disco?

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Q. Which of the following companies was one of the early adopters of Hadoop, using it to generate their search index?

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Q. What does HBase provide, and what is it built on top of?

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Q. Which subproject of Hadoop provides the common utilities and interfaces supporting other Hadoop subprojects?

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Q. What programming language is the current implementation of Dryad written in?

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Q. What is Dryad's approach to executing data parallel applications?

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Q. What is one advantage of Skynet's architecture compared to other MapReduce implementations?

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