1z0-908 Oracle MySQL 8.0 Database Administrator exact Exam Questions

MySQL 8.0 Database Administrator

Last Update 19 hours ago Total Questions : 141

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Question # 4

Your MySQL environment has asynchronous position based-replication with one master and one slave.

The slave instance had a disk I/O problem, so it was stopped.

You determined that the slave relay log files were corrupted and unusable, but no other files are damaged.

You restart MySQL Server.

How can replication be restored?

The slave relay logs should be deleted; then execute START SLAVE;

The relay logs from the master should be used to replace the corrupted relay logs.

The slave relay logs should be deleted; execute CHANGE MASTER to adjust the replication relay log file name, then issue start SLAVE;

The slave needs to be restored from backup.

Question # 5

Examine this MySQL Shell command:

dba.rebootClusterFromCompleteOutage()

Which two statements are true? (Choose two.)

It reconfigures InnoDB Cluster if the cluster was stopped.

It performs InnoDB Cluster instances rolling restart.

It only starts all InnoDB Cluster instances.

It is not mandatory that all instances are running and reachable before running the command.

It stops and restarts all InnoDB Cluster instances and initializes the metadata.

It only stops and restarts all InnoDB Cluster instances.

It picks the minimum number of instances necessary to rebuild the quorum and reconfigures InnoDB Cluster.

Question # 6

Which two statements are true about raw binary backups? (Choose two.)

They are converted to a highly compressible binary format.

The data format is identical to how MySQL stores the data on disk.

They are required to obtain FIPS security compliance.

The resulting files are easily human readable.

They are faster than logical backups because the process is a simple file or file system copy.

Question # 7

Your MySQL instance is capturing a huge amount of financial transactions every day in the finance database.

Company policy is to create a backup every day.

The main tables being updated are prefixed with transactions-.

These tables are archived into tables that are prefixed with archives- each month. mysqlbackup --optimistic-busy-tables="^finance\.transactions-.*" backup

Which optimization process best describes what happens with the redo logs?

The redo logs are backed up first, then the transaction and archive tables.

The redo logs are backed up only if there are changes showing for the transactions tables.

The redo logs are not backed up at all.

The archive tables are backed up first, then the transaction tables and redo logs.

The transaction tables are backed up first, then the archive tables and redo logs.

Question # 8

You have a MySQL system with 500 GB of data that needs frequent backups.

You use a mix of MyISAM and InnoDB storage engines for your data. Examine your backup requirement:

The MySQL system being backed up can never be unavailable or locked to the client applications.
The recovery from the backup must work on any system.
Only 1 hour of data can be lost on recovery of the backup.

Which option fulfills all backup requirements?

Take a physical backup of the MySQL system.

Use the Clone Plugin to copy the data to another MySQL system.

Take a logical backup of the MySQL system.

Take your backup from a slave of the MySQL system.