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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. When should you perform a backup in a MySQL database?
Response:

A) After every successful query execution.
B) Only when the database size exceeds a certain limit.
C) Only during scheduled maintenance windows.
D) After critical data updates or before making significant changes to the database.

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

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

3. Which of the following statements is true regarding MySQL user account privileges?
Response:

A) The GRANT option allows a user to revoke privileges from other users.
B) The USAGE privilege allows a user to connect to the MySQL server but grants no other privileges.
C) The RELOAD privilege allows a user to delete data from a table.
D) A user with the SUPER privilege can only read data from the database.

4. Which three are requirements for MySQL Group Replication (GR)?

A) GR only works with MySQL versions 8.0.12 or higher.
B) The binary log format must be set to mixed.
C) The use of global transaction identifiers is required.
D) Data to be replicated must be stored in the InnoDB transactional storage engine.
E) The minimum number of required nodes for achieving a consensus is two.
F) Primary keys are required on every replicated table.

5. By using the asynchronous MySQL Replication architecture, data can be replicated to slaves. Identify three use cases of MySQL Replication.

A) You can create a slave server for reporting applications, which get only read access to the slave servers. It off-loads the master server. Additional servers allow different database server configuration.
B) It allows backup to be done on the slave without impacting the master.
C) It provides multi-master access where the application can write and read data across the database servers.
D) MySQL Enterprise Backup will back up from Slave automatically.
E) MySQL Replication Connector/J (ReplicationDriver) is provided to allow read capability on slave and write capability on master.

Solutions: