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1z0-449 PDF DEMO:

QUESTION NO: 1
What does the following line do in Apache Pig?
products = LOAD '/user/oracle/products' AS (prod_id, item);
A. The contents of /user/oracle/products are loaded as tuples and aliased to products.
B. The LOAD table is populated with prod_id and item.
C. The contents of /user/oracle/products are dumped to the screen.
D. The products table is loaded by using data pump with prod_id and item.
Answer: A
Explanation:
The LOAD function loads data from the file system.
Syntax: LOAD 'data' [USING function] [AS schema];
Terms: 'data'
The name of the file or directory, in single quote
References: https://pig.apache.org/docs/r0.11.1/basic.html#load

QUESTION NO: 2
How should you encrypt the Hadoop data that sits on disk?
A. Enable HDFS Transparent Encryption on a non-Kerberos secured cluster.
B. Enable HDFS Transparent Encryption by using bdacli on a Kerberos-secured cluster.
C. Enable Audit Vault and Database Firewall for Hadoop by using the Mammoth utility.
D. Enable Transparent Data Encryption by using the Mammoth utility.
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.

QUESTION NO: 3
What does the flume sink do in a flume configuration?
A. forwards events to the source
B. consumes events delivered to it by an external source such as a web server
C. hosts the components through which events flow from an external source to the next destination
D. removes events from the channel and puts them into an external repository
E. sinks the log file that is transmitted into Hadoop
Answer: B
Explanation:
A Flume source consumes events delivered to it by an external source like a web server.
The external source sends events to Flume in a format that is recognized by the target
Flume source. When a Flume source receives an event, it stores it into one or more channels.
The channel is a passive store that keeps the event until it's consumed by a
Flume sink.
References: https://flume.apache.org/FlumeUserGuide.html

QUESTION NO: 4
Which user in the following set of ACL entries has read, write and execute permissions? user::rwx group::r-x other::r-x
default:user::rwx
default:user:bruce:rwx #effective:r-x
default:group::r-x
default:group:sales:rwx #effective:r-x
default:mask::r-x
default:other::r-x
A. all users
B. hdfs
C. bruce
D. user
E. sales
Answer: D
Explanation:
References: https://askubuntu.com/questions/257896/what-is-meant-by-mask-and-effective-in-the- output-from-getfacl

QUESTION NO: 5
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?
A. It is the streaming script that creates a database directory.
B. It is the preprocessor script for the Oracle partitioned table.
C. It is the preprocessor script for the HDFS external table.
D. It defines the jar file that points to the directory where Hive is installed.
E. It is the preprocessor script for the Impala table.
Answer: C
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

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考試編碼:1z0-449
考試名稱:Oracle Big Data 2017 Implementation Essentials
更新時間:2018-05-26
問題數量:72題
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考試編碼:1z0-449
考試名稱:Oracle Big Data 2017 Implementation Essentials
更新時間:2018-05-26
問題數量:72題
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考試編碼:1z0-449
考試名稱:Oracle Big Data 2017 Implementation Essentials
更新時間:2018-05-26
問題數量:72題
Oracle 1z0-449 證照考試

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