Hadoop Input Output Operations — Part 1 MCQs with Explanations

Defines how input data is read is the correct answer to “What is the purpose of the Hadoop InputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Reads and parses input data is the correct answer to “In Hadoop, what is the primary role of the RecordReader”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Execute MapReduce jobs is the correct answer to “What is the significance of the Hadoop OutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Combine intermediate key-value pairs on the mapper side is the correct answer to “In Hadoop MapReduce, what is the role of the CombineFileInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Store data in a binary format is the correct answer to “What is the purpose of the Hadoop SequenceFile format”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Convert data into a binary format is the correct answer to “In Hadoop, what does the term "Serialization" refer to”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output key-value pairs is the correct answer to “What is the primary function of the Hadoop RecordWriter”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Defines how input data is read is the correct answer to “What is the purpose of the Hadoop FileInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Process input key-value pairs is the correct answer to “In Hadoop, what does the term "Deserialization" refer to”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Read and parse text-based input data is the correct answer to “What is the primary role of the Hadoop TextInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Defines how input data is read is the correct answer to “In Hadoop, what is the purpose of the Hadoop SequenceFileInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output to multiple files is the correct answer to “What is the function of the Hadoop MultipleOutputs class”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Combine intermediate key-value pairs on the mapper side is the correct answer to “What does the term "Combiner" represent in the context of Hadoop I/O”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Store data in a binary format is the correct answer to “In Hadoop, what is the purpose of the Hadoop MapFile format”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Manages storage layer is the correct answer to “What is the primary role of the Hadoop OutputCommitter”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Reads and parses Avro data is the correct answer to “What is the role of the Hadoop AvroInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Serialization/Deserialization is the correct answer to “What does the term "SerDe" stand for in the context of Hadoop”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Read and parse text-based input data is the correct answer to “In Hadoop, what is the purpose of the Hadoop NLineInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Defines the reduce output format is the correct answer to “What is the function of the Hadoop FileOutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output to a SequenceFile is the correct answer to “In Hadoop, what is the primary role of the Hadoop SequenceFileOutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Combine intermediate key-value pairs on the mapper side is the correct answer to “What is the purpose of the Hadoop CombineFileInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Manages storage layer is the correct answer to “In Hadoop, what does the term "OutputCommitter" refer to”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output in Avro data format is the correct answer to “What is the significance of the Hadoop AvroOutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Simplify the output format is the correct answer to “In Hadoop MapReduce, what is the role of the LazyOutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output to a MapFile is the correct answer to “What is the primary purpose of the Hadoop MapFileOutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Read data from a database is the correct answer to “In Hadoop, what is the role of the Hadoop DBInputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Serialization/Deserialization is the correct answer to “What does the term "SerDe" stand for in Hadoop”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output to multiple files is the correct answer to “What is the primary function of the Hadoop MultipleOutputs class”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Represents a chunk of input data is the correct answer to “In Hadoop, what does the term "InputSplit" represent”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Write output in Avro data format is the correct answer to “What is the purpose of the Hadoop AvroKeyOutputFormat”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Static number is the correct answer to “Thrift resolves possible conflicts through . . . . . . . . of the field.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Fixed is the correct answer to “. . . . . . . . instances are encoded using the number of bytes declared in the schema.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Avro is the correct answer to “Apache . . . . . . . . is a serialization framework that produces data in a compact binary format.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

MapFile is the correct answer to “The . . . . . . . . is a directory that contains two SequenceFile.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Synchronization markers is the correct answer to “. . . . . . . . are used between blocks to permit efficient splitting of files for MapReduce processing.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

checksum is the correct answer to “The HDFS client software implements . . . . . . . . checking on the contents of HDFS files.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

RPC is the correct answer to “Avro is said to be the future . . . . . . . . layer of Hadoop.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

MapReduce is the correct answer to “Which of the following works well with Avro”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

Sort Order is the correct answer to “. . . . . . . . permits data written by one system to be efficiently sorted by another system.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.

7 is the correct answer to “Avro supports . . . . . . . . kinds of complex types.”. This question is standard in competitive examination syllabi for Hadoop Input Output Operations.