Cloudera Hadoop Developer Certification Questions and Answer (Dumps and Practice Questions)

Question : Which is Hadoop Daemon Process


1. JobTracker
2. Tasktracker
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4. DataNode
5. All of the above

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Question : Which statement is true about apache Hadoop ?



1. HDFS performs best with a modest number of large files
2. No Randome Writes is alowed to the file
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4. All of the above

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Question : Which statement is true about the storing files in HDFS



1. Files are split in the block
2. All the blocks of the files should remain on same macine
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4. All of the above
5. 1 and 3 are correct

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Related Questions

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Question :

You have following data in a hive table

ID:INT,COLOR:TEXT,WIDTH:INT
1,green,190
2,blue,300
3,yellow,299
4,blue,199
5,green,199
6,yellow,299
7,green,799

Select the correct MapReduce program which can produce the output similar to below Hive Query.

Select color from table group by color Having SUM(WIDTH)>600;


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2. 2
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Question : You have following data in a hive table

ID:INT,COLOR:TEXT,WIDTH:INT
1,green,190
2,blue,300
3,yellow,299
4,blue,199
5,green,199
6,yellow,299
7,green,799

Select the correct MapReduce program which can produce the output similar to below Hive Query.

Select color from table group by color DESC Having SUM(WIDTH)>600;


1. 1
2. 2
3. Access Mostly Uused Products by 50000+ Subscribers


Question :

You have following data in a hive table

ID:INT,COLOR:TEXT,WIDTH:INT
1,green,190
2,blue,300
3,yellow,299
4,blue,199
5,green,199
6,yellow,299
7,green,799

Select the correct MapReduce program which can produce the output similar to below Hive Query.

Select color,sum(width) from table group by color order by color desc;

1. 1
2. 2
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Question :

You have following data in a hive table

ID:INT,COLOR:TEXT,WIDTH:INT
1,green,190
2,blue,300
3,yellow,299
4,blue,199
5,green,199
6,yellow,299
7,green,799
8,red,800

Select the correct MapReduce program which can produce the output similar to below Hive Query.

Select `(green|blue)?+.+` from table;


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2. 2
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4. 4


Question : You have following data in a Hive table, assuming based on the tag you want to join the data
colortable,1,pink,300
colortable,2,red,500
colortable,3,yellow,300
flowertable,1,rose
flowertable,2,amaryllis
flowertable,3,sunflower
flowertable,4,lily
flowertable,5,cosmos
And produce the output as below hive query.
Select color,flower from colortable join flowertable ON (colortable.id=flowertable.id)
Select the correct MapReduce program which produces the output as above query.


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Question :


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2. 2
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