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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Hadoop Ecosystem Fundamentals | - HDFS Architecture and Data Storage Concepts
|
| Apache Hive | - HiveQL Query Language
|
| Data Processing and Integration | - Hadoop data formats
|
| Apache Pig | - Pig execution model
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
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 = JOIN A by al, B by b2;
- B. C = DOIN B BY a1, A by b2;
- C. C = JOIN A SO, B $1;
- D. C = JOIN A a1, B b2;
Answer: A
Which describes how a client reads a file from HDFS?
- A. The client contacts the NameNode for the block location(s). The NameNode then queries the DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects the client to the DataNode that holds the requested data block(s). The client then reads the data directly off the DataNode.
- B. The client queries the NameNode for the block location(s). The NameNode returns the block location(s) to the client. The client reads the data directory off the DataNode(s).
- C. The client queries all DataNodes in parallel. The DataNode that contains the requested data responds directly to the client. The client reads the data directly off the DataNode.
- D. The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then from the NameNode to the client.
Answer: B
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Which of the following tool was designed to import data from a relational database into HDFS?
- A. HCatalog
- B. Flume
- C. Ambari
- D. Sqoop
Answer: D
A NameNode in Hadoop 2.0 manages ______________.
- A. An arbitrary number of namespaces
- B. Two namespaces: an active namespace and a backup namespace
- C. A single namespace
- D. No namespaces
Answer: C
Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?
- A. ApplicationMasterService
- B. TaskTracker
- C. ApplicationMaster
- D. ResourceManager
- E. JobTracker
- F. NodeManager
Answer: F
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