Try Cloudera : CCD-333 valid & accurate questions and answers
Updated: May 29, 2026
No. of Questions: 60 Questions & Answers with Testing Engine
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Cloudera Certified Developer for Apache Hadoop Sample Questions:
1. What is a SequenceFile?
A) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in sorted order.
B) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous writable objects.
C) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous writable objects.
D) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be same type.
2. 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
3. What is the preferred way to pass a small number of configuration parameters to a mapper or reducer?
A) Using a plain text file via the Distributedcache, which each mapper or reducer reads.
B) As a custom input key-value pair passed to each mapper or reducer.
C) Through a static variable in the MapReduce driver class (i.e., the class that submits the MapReduce job).
D) As key-value pairs in the jobconf object.
4. Custom programmer-defined counters in MapReduce are:
A) Lightweight devices for ensuring the correctness of a MapReduce program. Mappers Increment counters, and reducers decrement counters. If at the end of the program the counters read zero, then you are sure that the job completed correctly.
B) Lightweight devices for synchronization within MapReduce programs. You can use counters to coordinate execution between a mapper and a reducer.
C) Lightweight devices for bookkeeping within MapReduce programs.
5. You have an employee who is a Date Analyst and is very comfortable with SQL. He would like to run ad-hoc analysis on data in your HDFS duster. Which of the following is a data warehousing software built on top of Apache Hadoop that defines a simple SQL-like query language well-suited for this kind of user?
A) Hadoop Streaming
B) Oozie
C) Hue
D) Hive
E) Pig
F) Sqoop
G) Flume
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: D |
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