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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Hadoop Ecosystem Tools | - Sqoop and data ingestion - Workflow and processing frameworks |
| Topic 2: Pig Development | - Pig data types and UDFs - Pig Latin scripting |
| Topic 3: Hadoop Core Concepts | - YARN and MapReduce fundamentals - HDFS architecture and commands |
| Topic 4: Hive Development | - Hive table definitions and queries - Hive optimization and execution |
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
For each intermediate key, each reducer task can emit:
- A. As many final key-value pairs as desired. There are no restrictions on the types of those key-value
pairs (i.e., they can be heterogeneous). - B. As many final key-value pairs as desired, as long as all the keys have the same type and all the values
have the same type. - C. One final key-value pair per value associated with the key; no restrictions on the type.
- D. One final key-value pair per key; no restrictions on the type.
- E. As many final key-value pairs as desired, but they must have the same type as the intermediate
key-value pairs.
Correct Answer: B 🗳️
Which one of the following is NOT a valid Oozie action?
- A. mrunit
- B. hive
- C. mapreduce
- D. pig
Correct Answer: A 🗳️
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. Records can only be added to the table using the Hive INSERT command.
- D. Hive dynamically defines the schema of the table based on the FROM clause of a SELECT query.
Correct Answer: B 🗳️
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 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. - C. 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. - D. 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).
Correct Answer: D 🗳️
What does the following WebHDFS command do?
Curl -1 -L "http://host:port/webhdfs/v1/foo/bar?op=OPEN"
- A. Delete a directory /foo/bar
- B. Make a directory /foo/bar
- C. List a directory /foo
- D. Read a file /foo/bar
Correct Answer: D 🗳️
