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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

Question 1

Which two are advantages of using Document Store in MySQL?

A. MySQL provides a native data type to store JSON data as a document
B. MySQL is a document database allowing PDF and Word documents
C. MySQL can store XML as a schema-less database
D. MySQL provides a native data type to index PDF documents
E. MySQL provides a NoSQL API to access the document store

Question 2

You want to create an encrypted table. So, you enter this command:
CREATE TABLE 'test_encryption2% (
'id' int(10) unsigned NOT NULL AUTO_INCREMENT,
'server_name' varchar(15) NOT NULL,
PRIMARY KEY ('id') ) ENGINE=MYISAM AUTO_INCREMENT=l DEFAULT CHARSET=latin1 ENCRYPTION = 'Y1; You receive the following error:
ERROR 1031 (HY000): Table storage engine for 'test_encryption2' doesn't have this option Which statement correctly explains the reason for this error?

A. The encryption feature only works with InnoDB tables. You are creating a MylSAM table, and it is causing the error.
B. The term "server_name" is a reserved MySQL term. You cannot use it for the new table. This is what is causing the error.
C. You cannot use the AUTO_INCREMENT option to create an encrypted table. This is what is causing the error.
D. The test_encryption2 already exist. You are not using the correct option to recreate it and it is causing the error.

Question 3

Which activity will take place if a table is created with both the compression and encryption options?

A. The compression is performed, the ''data_at_rest_flag" is turned on and the tablespace data is encrypted.
B. The compression is performed before tablespace data is encrypted.
C. The system generates an error because the COMPRESSION and ENCRYPTION options cannot be used together.
D. The tablespace data is encrypted first and then compression is performed.

Question 4

How does MySQL HeatWave improve query performance?
Response:

A. By offloading analytics queries to an in-memory, highly parallel processing engine.
B. By automatically creating indexes on frequently used columns.
C. By replicating data across multiple servers.
D. By caching the entire database in memory.

Question 5

Which three prerequisites are needed for creating an Oracle Linux VM instance in the Oracle Cloud Infrastructure?

A. subnet configured on a Virtual Cloud Network (VCN)
B. Object Storage
C. existing VCN
D. bare metal Oracle Linux shape
E. Custom Image
F. ssh key pair

Solutions: