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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

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

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

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

3. Which three statements describe MySQL Enterprise Backup?

A) MySQL Enterprise Backup can be used to import/export data from on-premises MySQL installations.
B) MySQL Enterprise Backup offers backup based on Oracle RMAN with optimized row locking.
C) MySQL Enterprise Backup provides the point-in-time recovery functionality.
D) MySQL Enterprise Backup can be used to send backups to Oracle Cloud Infrastructure Storage Service.
E) MySQL Enterprise Backup is an optimized backup based on mysqldump with optimized row locking.

4. The slave connects to the master and asks for updated records. What command was issued for this to happen?

A) SLAVE START
B) RUN SLAVE
C) SLAVE RUN
D) START RUN SLAVE
E) START SLAVE

5. An Oracle Cloud Infrastructure customer already has many database instances configured and running in the cloud; however, they are reporting that they are unable to create any more instances.
What could be the problem?

A) The customer does not have proper user rights.
B) The customer reached the database instance limit of 32.
C) The customer has not kept up with their patching requirements; new instances cannot be created unless the majority or the template of existing instances are up-to-date.
D) The customer account might have reached resource quota/limits.

Solutions: