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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. You have a MySQL Server instance (running with Port# 3306) monitored by the Service Manager in MySQL Enterprise Monitor. You cloned the MySQL Database instance and configured it to be a replicated MySQL instance as Slave using Port# 3316 on the same machine as the Master Server. The replication configuration is working correctly. The Master and Slave Servers are running.
You are trying to add the newly created MySQL Slave instance to the Monitor. The Service Manager in MySQL Enterprise Monitor notifies you that the new instance is successfully added; however, it is not added correctly at the newly added configuration points to the old Master monitored items. The Monitor shows only one monitored MySQL instance for Master and Slave.
Which two are possible reasons for this problem?

A) The mysql.inventory table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
B) The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
C) The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
D) All the MySQL instances (Master and Slave) have the same server_uuid in <datadir>/auto.cnf.
E) The MASTER and SLAVE are grouped as one instance for monitoring.

2. An existing MySQL Database environment has been doing backup and restore in a logical way by using the mysq1dump and mysq1 client utilities. When the backup is started using mysqldump with single-transaction mode, the existing application has long wait time. When the restore is required, it takes more than three hours to restore.
What two are benefits of using mysqlbackup from MySQL Enterprise Backup in this situation?

A) mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.
B) MySQL Enterprise Backup does not back up system data so that it is much faster.
C) mysqlbackup can back up tables with the InnoDB engine without blocking. The backup is hot with InnoDB. Together with Incremental Backup, mysqlbackup from MySQL Enterprise Backup shortens the backup windows.
D) MySQL Enterprise Backup provides tape backup integration by default. It has the virtual tape option, which allows backup to tape device directly without extra third-party software integration.
E) mysqlbackup utilities dump the full database into a SQL file, which is imported into the mysql client in single-thread mode. mysqlbackup restores data from physical backups. Physical backup methods are faster than logical methods because they involve only file coping without conversion.

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

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

4. Assume that MySQL Enterprise Monitor is configured to monitor MySQL 8.0.10 or a later instance. Which three features are available?

A) deploying MySQL agent on supported target operating system
B) monitoring the availability of the MySQL Instance
C) analyzing executed MySQL queries
D) starting and stopping the MySQL instance
E) creating e-mail alerts and SNMP traps for MySQL warnings
F) tracing import and export with mysqldump

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 Replication Connector/J (ReplicationDriver) is provided to allow read capability on slave and write capability on master.
E) MySQL Enterprise Backup will back up from Slave automatically.

Solutions: