Online Access Free 1z1-449 Exam Questions

Your customer's Hadoop cluster displays an error while running a MapReduce task by using Yarn. The error states that a container could not be created.
Which resource in Yarn creates containers?

• A.NameNode
• B.Node Manager
• C.Task Tracker
• D.MasterNode
• E.Resource Manager

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?

• A.HiveFastQL
• B.Apache Grunt
• C.native MapReduce Java programs
• D.Impala

Which statement is true about the NameNode in Hadoop?

• A.When loading data, the NameNode tells the client or program where to write the data.
• B.All data passes through the NameNode; so if it is not sized properly, it could be a potential bottleneck.
• C.A query in Hadoop requires a MapReduce job to be run so the NameNode gets the location of the data from the JobTracker.
• D.If the NameNode goes down and a secondary NameNode has not been defined, the cluster is still accessible.

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?

• A.Oracle Data Integrator
• B.Oracle Exadata
• C.Oracle Container Database
• D.Oracle NoSQL

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?

• A.Update the MySQL metadata for Hadoop to define access control lists.
• B.Configure Audit Vault and Database Firewall protection policies for the Hadoop data.
• C.Configure Apache Sentry policies to protect the Hadoop data.
• D.Configure an /etc/sudoers file to restrict the Hadoop data.