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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Apache Pig | - Pig execution model
|
| Topic 2: Apache Hive | - Hive architecture
|
| Topic 3: Data Processing and Integration | - Data ingestion and ETL workflows
|
| Topic 4: Hadoop Ecosystem Fundamentals | - YARN and Resource Management
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
Which one of the following statements is FALSE regarding the communication between DataNodes and a federation of NameNodes in Hadoop 2.0?
- A. DataNodes send periodic block reports to all the NameNodes.
- B. Each DataNode receives commands from one designated master NameNode.
- C. DataNodes send periodic heartbeats to all the NameNodes.
- D. Each DataNode registers with all the NameNodes.
Correct Answer: B 🗳️
Consider the following two relations, A and B.
Which Pig statement combines A by its first field and B by its second field?
- A. C = DOIN B BY a1, A by b2;
- B. C = JOIN A by al, B by b2;
- C. C = JOIN A SO, B $1;
- D. C = JOIN A a1, B b2;
Correct Answer: B 🗳️
Which one of the following statements is true about a Hive-managed table?
- A. Hive dynamically defines the schema of the table based on the format of the underlying data.
- B. When the table is dropped, the underlying folder in HDFS is deleted.
- C. Hive dynamically defines the schema of the table based on the FROM clause of a SELECT query.
- D. Records can only be added to the table using the Hive INSERT command.
Correct Answer: B 🗳️
In a MapReduce job, the reducer receives all values associated with same key. Which statement best describes the ordering of these values?
- A. The values are arbitrary ordered, but multiple runs of the same MapReduce job will always have the same ordering.
- B. The values are arbitrarily ordered, and the ordering may vary from run to run of the same MapReduce job.
- C. Since the values come from mapper outputs, the reducers will receive contiguous sections of sorted values.
- D. The values are in sorted order.
Correct Answer: B 🗳️
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Review the following 'data' file and Pig code.
Which one of the following statements is true?
- A. The code executes successfully but there is not output because the D relation is empty
- B. The output of the dump d command is (M, {(38,95in),(62,95i02)})
- C. The code does not execute successfully because D is not a valid relation
- D. The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})
Correct Answer: D 🗳️
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