Hadoop Input Output Operations MCQ question and answer with solution

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HDFS, by default, replicates each data block . . . . . . . . times on different nodes and on at least . . . . . . . . racks.

A) 3, 2 B) 1, 2 C) 2, 3 D) All of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Point out the wrong statement.

A) Java code is used to deserialize the contents of the file into objects B) Avro allows you to use complex data structures within Hadoop MapReduce jobs C) The m2e plugin automatically downloads the newly added JAR files and their dependencies D) None of the mentioned

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

. . . . . . . . stores its metadata on multiple disks that typically include a non-local file server.

A) DataNode B) NameNode C) ActionNode D) None of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Point out the wrong statement.

A) Apache Avro™ is a data serialization system B) Avro provides simple integration with dynamic languages C) Avro provides rich data structures D) All of the mentioned

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The . . . . . . . . codec uses Google's Snappy compression library.

A) null B) snappy C) deflate D) none of the mentioned

Discuss

Answer & Solution

Answer: Option B

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Which of the following supports splittable compression?

A) LZO B) Bzip2 C) Gzip D) All of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Gzip (short for GNU zip) generates compressed files that have a . . . . . . . . extension.

A) .gzip B) .gz C) .gzp D) .g

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The LZO compression format is composed of approximately . . . . . . . . blocks of compressed data.

A) 128k B) 256k C) 24k D) 36k

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following is the slowest compression technique?

A) LZO B) Bzip2 C) Gzip D) All of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Point out the correct statement.

A) Avro provides functionality similar to systems such as Thrift B) When Avro is used in RPC, the client and server exchange data in the connection handshake C) Apache Avro, Avro, Apache, and the Avro and Apache logos are trademarks of The Java Foundation D) None of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Hadoop Input Output Operations MCQ question and answer with solution | Hadoop MCQs