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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. MySQL is installed on a Linux server with the configuration:
Which two methods can change the default options to use the authentication plug-in that implements SHA-256 hashing for user account passwords?

A) Add --default_authentication_plugin=sha256_password on the command line when you invoke the server.
B) Add default_authentication_plugin=sha256_password under [mysqld] in the configuration file.
C) Create user by using CREATE USER 'newuser'@'localhost' IDENTIFIED WITH 'Sh@256Pa33';
D) Create user by using CREATE USER 'newuser' @'localhost' SET PASSWORD AS 'Sh@256Pa33';

2. What three are ways to export and import data in MySQL Workbench?

A) Data Modeling Import Export Wizard
B) SQL Data Export and Import Wizard
C) Table Data Export and Import Wizard
D) Result Data Export and Import
E) Binary Data Export and Import Wizard
F) Backup Data Export and Import Wizard

3. You just installed MySQL by Using a Package Manager on Linux.
Where are the default InnoDB redo log files stored?

A) /var/lib/mysql
B) /usr/redo
C) /etc/my.cnf
D) /usr/bin/logs
E) /usr/mysql
F) /var/lib/mysql/innodb

4. Which three statements are true about MySQL Enterprise Backup?

A) It cannot back up encrypted tablespaces.
B) It provides the ability to create incremental backups.
C) It performs logical backups.
D) It enables you to take non-locking backups.
E) It performs hot or warm backups.

5. How does MySQL HeatWave improve query performance?
Response:

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

Solutions: