What is the cause of the error?

Correct Answer for the following Question is given below You want to set up access control lists on your NameNode in your Big Data Appliance. However, when you try to do so, you get an error stating “the NameNode disallows creation of ACLs.”What is the cause of the error?To use ACLs, first you’ll need to … Read more

How should you encrypt the Hadoop data that sits on disk?

Correct Answer for the following Question is given below How should you encrypt the Hadoop data that sits on disk?HDFS Transparent Encryption protects Hadoop data that’s at rest on disk. When the encryption is enabled for a cluster, data write and read operations on encrypted zones (HDFS directories) on the disk are automatically encrypted and … Read more

Which solution should the customer use?

Correct Answer for the following Question is given below Your customer wants to architect a system that helps to make real-time recommendations to users based on their past search history.Which solution should the customer use?Oracle Data Integration (both Oracle GoldenGate and Oracle Data Integrator) help to integrate data end-to-end between big data (NoSQL,Hadoop-based) environments and … Read more

What change should you make to the default configuration to improve performance?

Correct Answer for the following Question is given below Your customer is using the IKM SQL to HDFS File (Sqoop) module to move data from Oracle to HDFS. However, the customer is experiencing performance issues.What change should you make to the default configuration to improve performance?Controlling the amount of parallelism that Sqoop will use to … Read more

Which option can the customer use to improve performance?

Correct Answer for the following Question is given below Your customer is experiencing significant degradation in the performance of Hive queries. The customer wants to continue using SQL as the main query language for the HDFS store.Which option can the customer use to improve performance?Cloudera Impala is Cloudera’s open source massively parallel processing (MPP) SQL … Read more

What two actions do the following commands perform in the Oracle R Advanced Analytics for Hadoop Connector?

Correct Answer for the following Question is given below What two actions do the following commands perform in the Oracle R Advanced Analytics for Hadoop Connector? (Choose two.) ore.connect (type=”HIVE”) ore.attach ()You can connect to Hive and manage objects using R functions that have an ore prefix, such as ore.connect.To attach the current environment into … Read more

Which users are created automatically during the installation of the Oracle Big Data Appliance?

Correct Answer for the following Question is given below 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? Question: Which users are created automatically during … Read more

Identify two features of the Hadoop Distributed File System (HDFS). (Choose two.)

Correct Answer for the following Question is given below Identify two features of the Hadoop Distributed File System (HDFS). (Choose two.)HDFS is a distributed file system that provides high-performance access to data across Hadoop clusters. Like other Hadoop-related technologies, HDFS has become a key tool for managing pools of big data and supporting big data … Read more

How can you configure the Oracle Loader for Hadoop configuration file to meet the requirements of this client?

Correct Answer for the following Question is given below 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?In online database mode, Oracle Loader for Hadoop can connect … Read more

How should you accommodate this request?

Correct Answer for the following Question is given below You recently set up a customer’s Big Data Appliance. At the time, all users wanted access to all the Hadoop data. Now, the customer wants more control over the data that is stored in Hadoop.How should you accommodate this request?Apache Sentry is a new project that … Read more