Download Oracle.1z0-449.BrainDumps.2018-11-29.42q.tqb
| Vendor: | Oracle |
| Exam Code: | 1z0-449 |
| Exam Name: | Oracle Big Data 2016 Implementation Essentials |
| Date: | Nov 29, 2018 |
| File Size: | 680 KB |
| Downloads: | 1 |
Demo Questions
Question 1
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?
- It is the preprocessor script for the Impala table.
- It is the preprocessor script for the HDFS external table.
- It is the streaming script that creates a database directory.
- It is the preprocessor script for the Oracle partitioned table.
- It defines the jar file that points to the directory where Hive is installed.
Correct answer: B
Explanation:
The hdfs_stream script is the preprocessor for the Oracle Database external table created by Oracle SQL Connector for HDFS. References: https://docs.oracle.com/cd/E37231_01/doc.20/e36961/start.htm#BDCUG107 The hdfs_stream script is the preprocessor for the Oracle Database external table created by Oracle SQL Connector for HDFS.
References: https://docs.oracle.com/cd/E37231_01/doc.20/e36961/start.htm#BDCUG107
Question 2
How should you encrypt the Hadoop data that sits on disk?
- Enable Transparent Data Encryption by using the Mammoth utility.
- Enable HDFS Transparent Encryption by using bdacli on a Kerberos-secured cluster.
- Enable HDFS Transparent Encryption on a non-Kerberos secured cluster.
- Enable Audit Vault and Database Firewall for Hadoop by using the Mammoth utility.
Correct answer: B
Explanation:
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 decrypted. This process is “transparent” because it’s invisible to the application working with the data. The cluster where you want to use HDFS Transparent Encryption must have Kerberos enabled. Incorrect Answers:D: The cluster where you want to use HDFS Transparent Encryption must have Kerberos enabled.References: https://docs.oracle.com/en/cloud/paas/big-data-cloud/csbdi/using-hdfs-transparent-encryption.html#GUID-16649C5A-2C88-4E75-809A-BBF8DE250EA3 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 decrypted. This process is “transparent” because it’s invisible to the application working with the data.
The cluster where you want to use HDFS Transparent Encryption must have Kerberos enabled.
Incorrect Answers:
D: The cluster where you want to use HDFS Transparent Encryption must have Kerberos enabled.
References: https://docs.oracle.com/en/cloud/paas/big-data-cloud/csbdi/using-hdfs-transparent-encryption.html#GUID-16649C5A-2C88-4E75-809A-BBF8DE250EA3
Question 3
What two things does the Big Data SQL push down to the storage cell on the Big Data Appliance? (Choose two.)
- Transparent Data Encrypted data
- the column selection of data from individual Hadoop nodes
- WHERE clause evaluations
- PL/SQL evaluation
- Business Intelligence queries from connected Exalytics servers
Correct answer: AB
