Oracle Big Data 2017 Implementation Essentials - 1z0-449 Exam Questions [2026]

QUESTION NO: 1
Your customer's security team needs to understand how the Oracle Loader for Hadoop
Connector writes data to the Oracle database.
Which service performs the actual writing?

A. NameNode B. OLH agent C. write tasks D. map tasks E. reduce tasks

Correct Answer: E

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QUESTION NO: 2
What are the two advantages of using Hive over MapReduce? (Choose two.)

A. Hive simplifies Hadoop for new users. B. Hive allows for sophisticated analytics on large data sets. C. Hive does not require MapReduce to run in order to analyze data. D. Hive is a free tool; Hadoop requires a license. E. Hive is much faster than MapReduce because it accesses data directly.

Correct Answer: A,B

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QUESTION NO: 3
During a meeting with your customer's IT security team, you are asked the names of the main OS users and groups for the Big Data Appliance.
Which users are created automatically during the installation of the Oracle Big Data
Appliance?

A. bda, cdh5, and oracle B. mapred, bda, and engsys C. flume, hbase, and hdfs D. hbase, cdh5, and oracle

Correct Answer: C

QUESTION NO: 4
You are working with a client who does not allow the storage of user or schema passwords in plain text.
How can you configure the Oracle Loader for Hadoop configuration file to meet the requirements of this client?

A. Configure the configuration file to prompt for the password during remote job executions. B. Encrypt the password in the configuration file by using Transparent Data Encryption. C. Store the password in an Access Control List and configure the ACL location in the configuration file. D. Store the information in an Oracle wallet and configure the wallet location in the configuration file.

Correct Answer: D

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QUESTION NO: 5
Your customer needs to manage configuration information on the Big Data Appliance.
Which service would you choose?

A. ApacheManager B. Zookeeper C. SparkPlug D. JobMonitor E. Hive Server

Correct Answer: B

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QUESTION NO: 6
Your customer is worried that the redundancy of HDFS will not meet its needs. The customer needs to store certain files with higher levels of redundancy than other files.
Which architectural feature of HDFS should you choose?

A. Apache Impala, which can be used to set the duplex level for each file B. Apache Scala on top of MapReduce, which allows you to store files at various redundancies C. Automatic Storage Management, which can be used to multiplex the data D. the replication factor, which can be set at the file level

Correct Answer: D

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QUESTION NO: 7
You need to place the results of a PigLatin script into an HDFS output directory.
What is the correct syntax in Apache Pig?

A. store D into './output'; B. write D as './output'; C. place D into './output'; D. hdfsstore D into './output'; E. update hdfs set D as './output';

Correct Answer: A

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QUESTION NO: 8
For Oracle R Advanced Analytics for Hadoop to access the data stored in HDFS, what must the input files comply with?

A. All the input files for a MapReduce job must be stored in one directory as part of one logical file. B. Only files with tab delimiters are supported. C. Oracle R Advanced Analytics does not have any restrictions on input files. D. Only input files with an underscore (_) are processed.

Correct Answer: A

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