Advanced MapReduce Concepts MCQ question and answer with solution

1

Which of the following is the only way of running mappers?

A) MapReducer B) MapRunner C) MapRed D) All of the mentioned

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Answer & Solution

Answer: Option B

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2

. . . . . . . . method adds the deprecated key to the global deprecation map.

A) addDeprecits B) addDeprecation C) keyDeprecation D) none of the mentioned

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Answer: Option B

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3

reduceProgress() gets the progress of the job's reduce-tasks, as a float between . . . . . . . .

A) 0.0-1.0 B) 1.0-2.0 C) 2.0-3.0 D) None of the mentioned

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Answer & Solution

Answer: Option A

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4

Which of the following is only for storage with limited compute?

A) Hot B) Cold C) Warm D) All_SSD

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Answer: Option B

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5

The CapacityScheduler has a predefined queue called . . . . . . . .

A) domain B) root C) rear D) all of the mentioned

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Answer & Solution

Answer: Option B

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6

YARN's dynamic allocation of cluster resources improves utilization over more static . . . . . . . . rules used in early versions of Hadoop.

A) Hive B) MapReduce C) Imphala D) All of the mentioned

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Answer: Option B

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7

Point out the wrong statement.

A) Data transfer protocol of DataNode does not use the RPC framework of Hadoop B) Apache Oozie which access the services of Hadoop on behalf of end users need to be able to impersonate end users C) DataNode must authenticate itself by using privileged ports which are specified by dfs.datanode.address and dfs.datanode.http.address D) None of the mentioned

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Answer: Option D

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8

. . . . . . . . will clear the RMStateStore and is useful if past applications are no longer needed.

A) -format-state B) -form-state-store C) -format-state-store D) none of the mentioned

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Answer & Solution

Answer: Option C

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9

. . . . . . . . is used for storing one of the replicas in SSD.

A) Hot B) Lazy_Persist C) One_SSD D) All_SSD

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Answer: Option C

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10

Point out the correct statement.

A) Mover is not similar to Balancer B) hdfs dfsadmin -setStoragePolicy <path> <policyName> puts a storage policy to a file or a directory. C) addCacheArchive add archives to be localized D) none of the mentioned

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Answer: Option C

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Advanced MapReduce Concepts MCQ question and answer with solution | Hadoop MCQs