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Cloudera CCD-333 Exam Syllabus Topics:

Cloudera Certified Developer for Apache Hadoop Sample Questions:

1. You need a distributed, scalable, data Store that allows you random, realtime read/write access to hundreds of terabytes of data. Which of the following would you use?

A) Flume
B) Oozie
C) Sqoop
D) Hive
E) HBase
F) Hue
G) Pig

2. Which of the following best describes the workings of TextInputFormat?

A) The input file is split exactly at the line breaks, so each Record Reader will read a series of complete lines.
B) Input file splits may cross line breaks. A line that crosses tile splits is ignored.
C) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReaders of both splits containing the broken line.
D) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains the end of the broken line.
E) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains the beginning of the broken line.

3. You use the hadoop fs -put command to write a 300 MB file using an HDFS block size of 64 MB. Just after this command has finished writing 200 MB of this file, what would another user see when trying to access this file?

A) They would see no content until the whole file is written and closed.
B) They would see the current state of the file, up to the last bit written by the command.
C) They would see the content of the file through the last completed block.
D) They would see Hadoop throw an concurrentFileAccessException when they try to access this file.

4. During the standard sort and shuffle phase of MapReduce, keys and values are passed to reducers. Which of the following is true?

A) Keys are presented to a reducer in random order; values for a given key are sorted in ascending order.
B) Keys are presented to a reducer in random order; values for a given key are not sorted.
C) Keys are presented to a reducer in soiled order; values for a given key are sorted in ascending order.
D) Keys are presented to a reducer in sorted order; values for a given key are not sorted.

5. Which of the following best describes the map method input and output?

A) It accepts a single key-value pair as input and can emit only one key-value pair as output.
B) It accepts a single key-value pair as input and can emit any number of key-value pairs as output, including zero.
C) It accepts a list of key-value pairs as input hut run emit only one key value pair as output.
D) It accepts a single key-value pair as input and emits a single key and list of corresponding values as output

Solutions: