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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. When using an Oracle Cloud Infrastructure Compute Instance with MySQL Enterprise Edition installed, you have two choices for backup destinations. What are these two choices?

A) Flash-archive recovery area
B) Cloud storage only
C) Cloud tape library
D) Both Cloud storage and local storage

2. Which three options are valid reasons for using a primary key in a table?

A) maintaining a history of row insertions or updates
B) increasing performance when using select statements
C) preventing duplicate keys
D) to make it easier to change the PRIMARY KEY value
E) exporting data faster with mysqldump
F) automatic storage of data in a sorted order

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

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

4. Which two methods help prevent MySQL security risks?

A) Ensure that MySQL accounts have short and easy passwords.
B) Use the secure installation script "mysql_alays_secure_installation".
C) Allow unauthorized clients to connect to the server.
D) Transmit plain (unencrypted) data over networks.
E) Use a firewall to control access to MySQL ports.
F) Grant only permissions that a user requires.

5. The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?

A) On the Master server, disable binlog by removing the --log-bin option.
B) Execute the purge binary logs statement without argument.
C) To safely purge binary log files, perform these steps:
D) Delete all binlog files manually on the file system to release storage spaces.
E) Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.

Solutions: