MySQL Enterprise Firewall can block destructive SQL commands, such as DROP DATABASE, if these commands are not part of the normal query patterns learned by the firewall, preventing unauthorized database modification or deletion.

MySQL Enterprise Audit and MySQL Enterprise Backup are part of the MySQL Enterprise Edition, providing advanced auditing and backup capabilities. The Performance Schema is available in both Community and Enterprise editions, while Query Cache is a general MySQL feature.

In synchronous replication, the primary server waits for all replicas to confirm that they have successfully applied the changes before committing the transaction. This ensures consistency across the primary and replicas but can add latency.

InnoDB uses undo logs and redo logs to ensure crash recovery. If the server crashes, InnoDB can use these logs to roll back incomplete transactions and ensure data integrity.

MySQL Enterprise Monitor provides a graphical interface that helps administrators track the health and performance of MySQL databases. It includes real-time monitoring and alerting to identify potential bottlenecks or issues before they affect performance.