Exam Name: Hadoop 2.0 Certification exam for Pig and Hive Developer
Certification Provider: Hortonworks
Corresponding Certification: HCAHD
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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Hadoop Ecosystem Fundamentals | - HDFS Architecture and Data Storage Concepts
|
| Apache Pig | - Pig Latin Programming
|
| Data Processing and Integration | - Data ingestion and ETL workflows
|
| Apache Hive | - Hive architecture
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
Your client application submits a MapReduce job to your Hadoop cluster. Identify the Hadoop daemon on which the Hadoop framework will look for an available slot schedule a MapReduce operation.
- A. TaskTracker
- B. NameNode
- C. DataNode
- D. JobTracker
- E. Secondary NameNode
Correct Answer: D 🗳️
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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. Hive dynamically defines the schema of the table based on the FROM clause of a SELECT query.
- C. When the table is dropped, the underlying folder in HDFS is deleted.
- D. Records can only be added to the table using the Hive INSERT command.
Correct Answer: C 🗳️
A client application creates an HDFS file named foo.txt with a replication factor of 3. Identify which best describes the file access rules in HDFS if the file has a single block that is stored on data nodes A, B and C?
- A. The file can be accessed if at least one of the data nodes storing the file is available.
- B. Each data node stores a copy of the file in the local file system with the same name as the HDFS file.
- C. Each data node locks the local file to prohibit concurrent readers and writers of the file.
- D. The file will be marked as corrupted if data node B fails during the creation of the file.
Correct Answer: A 🗳️
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What data does a Reducer reduce method process?
- A. All data for a given value, regardless of which mapper(s) produced it.
- B. All data for a given key, regardless of which mapper(s) produced it.
- C. All the data in a single input file.
- D. All data produced by a single mapper.
Correct Answer: B 🗳️
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Your cluster's HDFS block size in 64MB. You have directory containing 100 plain text files, each of which is 100MB in size. The InputFormat for your job is TextInputFormat. Determine how many Mappers will run?
- A. 640
- B. 100
- C. 200
- D. 64
Correct Answer: C 🗳️
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