Developing MapReduce Applications MCQ question and answer with solution

Home

Competitive Exams MCQs

Aptitude English Verbal Reasoning Non Verbal Reasoning General Knowledge(GK) General Science(GS) Data Interpretation(DI) Banking Awareness Current Affairs

Computer Fundatmental MCQs

Computer Fundamentals Microsoft Word Microsoft Excel MS Power Point Tally Operating System Python AI(Artificial Intelligence)

Engineering Subjects MCQs

Computer Science Electronics & Communication Mechanical Engineering Civil Engineering Electrical Engineering

More Engineering MCQs

Chemical Engineering Automobile Engineering Biotechnology Mining Engineering Geological Engineering Metallurgical Engineering

Engineering Core

Engineering Mathematics Engineering Physics Engineering Chemistry

Computer Fundamentals MCQs

Computer Fundamentals Microsoft Word Microsoft Excel MS Power Point Tally Operating System Networking Database SQL MySQL

Programming MCQs

C Programming C++ Programming Java Python PHP JavaScript

Advanced Programming MCQs

Artificial Intelligence Machine Learning Data Science Cloud Computing Hadoop IoT

Graduation & PG

Commerce Management Law Agriculture Sociology Psychology Home Science Mass Communication Political Science Psychology

Resources

Current Affairs Interview Blog

Exam Categories

SSC Exams Railway Exams All Exams

SSC Exams

SSC CGL SSC CHSL SSC MTS SSC CPO SSC GD SSC JHT SSC Selection Post SSC Stenographer SSC JE

Railway Exams

RRB ALP RRB Technician RRB Section Controller RRB JE RRB Paramedical RRB Group D

Popular Exams

SSC CGL SSC CHSL SSC MTS RRB NTPC (Graduate) RRB Group D RRB ALP RRB Technician RRB Section Controller

The output of the reduce task is typically written to the FileSystem via . . . . . . . .

A) OutputCollector.collect B) OutputCollector.get C) OutputCollector.receive D) OutputCollector.put

Discuss

Answer & Solution

Answer: Option A

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

The . . . . . . . . executes the Mapper/ Reducer task as a child process in a separate jvm.

A) JobTracker B) TaskTracker C) TaskScheduler D) None of the mentioned

Discuss

Answer & Solution

Answer: Option A

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

Point out the correct statement.

A) The number of sorted map outputs fetched into memory before being merged to disk B) The memory threshold for fetched map outputs before an in-memory merge is finished C) The percentage of memory relative to the maximum heap size in which map outputs may not be retained during the reduce D) None of the mentioned

Discuss

Answer & Solution

Answer: Option A

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

. . . . . . . . communicate with the client and handle data-related operations.

A) Master Server B) Region Server C) Htable D) All of the mentioned

Discuss

Answer & Solution

Answer: Option B

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

During the execution of a streaming job, the names of the . . . . . . . . parameters are transformed.

A) vmap B) mapvim C) mapreduce D) mapred

Discuss

Answer & Solution

Answer: Option D

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

Point out the wrong statement.

A) The Mapper outputs are sorted and then partitioned per Reducer B) The total number of partitions is the same as the number of reduce tasks for the job C) The intermediate, sorted outputs are always stored in a simple (key-len, key, value-len, value) format D) None of the mentioned

Discuss

Answer & Solution

Answer: Option D

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

Point out the correct statement.

A) The right number of reduces seems to be 0.95 or 1.75 B) Increasing the number of reduces increases the framework overhead C) With 0.95 all of the reduces can launch immediately and start transferring map outputs as the maps finish D) All of the mentioned

Discuss

Answer & Solution

Answer: Option C

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

The number of reduces for the job is set by the user via . . . . . . . .

A) JobConf.setNumTasks(int) B) JobConf.setNumReduceTasks(int) C) JobConf.setNumMapTasks(int) D) All of the mentioned

Discuss

Answer & Solution

Answer: Option B

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

The framework groups Reducer inputs by key in . . . . . . . . stage.

A) sort B) shuffle C) reduce D) none 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) To read data from an HBase table, use the get() method of the HTable class B) You can retrieve data from the HBase table using the get() method of the HTable class C) While retrieving data, you can get a single row by id, or get a set of rows by a set of row ids, or scan an entire table or a subset of rows D) None of the mentioned

Discuss

Answer & Solution

Answer: Option D

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

1 2 3 4 5 6 7

Developing MapReduce Applications MCQ question and answer with solution | Hadoop MCQs