Monday 29 September 2014

Comments On CCD-410 Sample Dumps


What do you think of these three questions mentioned in site CCD-410 Practice Exam Questions Demo 100% Pass-Guaranteed or Your Money Back!!!


QUESTION: 3

What happens in a MapReduce job when you set the number of reducers to one?

A. A single reducer gathers and processes all the output from all the mappers. The output is written in as many separate files as there are mappers.
B. A single reducer gathers and processes all the output from all the mappers. The output is written to a single file in HDFS.
C. Setting the number of reducers to one creates a processing bottleneck, and since the number of reducers as specified by the programmer is used as a reference value only, the MapReduceruntime provides a default setting for the number of reducers.
D. Setting the number of reducers to one is invalid, and an exception is thrown.

Answer:A

QUESTION: 4

In the standard word count MapReduce algorithm, why might using a combiner reduce theoverall Job running time?

A. Because combiners perform local aggregation of word counts, thereby allowing the mappers to process input data faster.
B. Because combinersperform local aggregation of word counts, thereby reducing the number of mappers that need to run.
C. Because combiners perform local aggregation of word counts, and then transfer that data toreducers without writing the intermediate data to disk.
D. Because combiners perform local aggregation of word counts, thereby reducing the number of key-value pairs that need to be snuff let across the network to the reducers.

Answer:A

QUESTION: 5

You have user profile records in your OLTP database,that you want to join with weblogs you have already ingested into HDFS.How will you obtain these user records?

A. HDFS commands
B. Pig load
C. Sqoop import
D. Hive

Answer :B


Correct Answers

QUESTION 3: Answer B
QUESTION 4: Answer D
QUESTION 5: Answer C

See reviews on correct answer

4 comments:

  1. For CCD-410 latest and updated dumps contact completeexamcollection@gmail.com

    ReplyDelete
  2. For latest and updated Cloudera certification dumps in PDF format contact us at completeexamcollection@gmail.com.
    Refer our blog for more details http://completeexamcollection.blogspot.in/2015/04/cloudera-hadoop-certification-dumps.html

    ReplyDelete
  3. Really nice information. It is very useful and informative post. Thanks for sharing.


    Hadoop Certification in Chennai



    Hadoop Certification in Chennai

    ReplyDelete
  4. Latest updated for this exam in pdf format are available with itcertificationsqueries@gmail.com.Those who need the dumps for the exam can send us an email for the same.Kindly mention your exam number in the email subject

    ReplyDelete