1Z0-449Preview

Your customers security team needs to understand how the Oracle Loader for Hadoop Connector writes data to the Oracle database.
Which service performs the actual writing?

Your customer needs to manage configuration information on the Big Data Appliance.
Which service would you choose?

You are helping your customer troubleshoot the use of the Oracle Loader for Hadoop Connector in online mode. You have performed steps 1, 2, 4, and 5.
STEP 1: Connect to the Oracle database and create a target table.
STEP 2: Log in to the Hadoop cluster (or client).

STEP 3: Missing step -
STEP 4: Create a shell script to run the OLH job.
STEP 5: Run the OLH job.
What step is missing between step 2 and step 4?

The hdfs_stream script is used by the Oracle SQL Connector for HDFS to perform a specific task to access data.
What is the purpose of this script?

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

What two things does the Big Data SQL push down to the storage cell on the Big Data Appliance? (Choose two.)

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?

Your customer has an older starter rack Big Data Appliance (BDA) that was purchased in 2013. The customer would like to know what the options are for growing the storage footprint of its server.
Which two options are valid for expanding the customers BDA footprint? (Choose two.)

What are three correct results of executing the preceding query? (Choose three.)

What does the following line do in Apache Pig?
products = LOAD /user/oracle/products AS (prod_id, item);

What is the output of the following six commands when they are executed by using the Oracle XML Extensions for Hive in the Oracle XQuery for Hadoop
Connector?

1. $ echo "xxx" > src.txt
2. $ hive --auxpath $OXH_HOME/hive/lib -i $OXH_HOME/hive/init.sql
3. hive> CREATE TABLE src (dummy STRING);
4. hive> LOAD DATA LOCAL INPATH 'src.txt' OVERWRITE INTO TABLE src;
5. hive> SELECT * FROM src;

OK -
xxx
6. hive> SELECT xml_query ("x/y", "<x><y>123</y><z>456</z></x>") FROM src;

The NoSQL KVStore experiences a node failure. One of the replicas is promoted to primary.
How will the NoSQL client that accesses the store know that there has been a change in the architecture?

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?

Your customer keeps getting an error when writing a key/value pair to a NoSQL replica.
What is causing the error?

The log data for your customer's Apache web server has seven string columns.
What is the correct command to load the log data from the file 'sample.log' into a new Hive table LOGS that does not currently exist?

Your customer’s Oracle NoSQL store has a replication factor of 3. One of the customer’s replica nodes goes down.
What will be the long-term performance impact on the customer’s NoSQL database if the node is replaced?

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?

What is the result when a flume event occurs for the following single node configuration?

What kind of workload is MapReduce designed to handle?

Your customer uses LDAP for centralized user/group management.
How will you integrate permissions management for the customers Big Data Appliance into the existing architecture?

Your customer collects diagnostic data from its storage systems that are deployed at customer sites. The customer needs to capture and process this data by country in batches.
Why should the customer choose Hadoop to process this data?

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?

How should you control the Sqoop parallel imports if the data does not have a primary key?

Your customer uses Active Directory to manage user accounts. You are setting up Hadoop Security for the customers Big Data Appliance.
How will you integrate Hadoop and Active Directory?