Oracle 1Z0-921 : MySQL 2021 Implementation Essentials

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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. The MySQL Enterprise Monitor Agent requires a user configured in each MySQL instance that is being monitored with suitable privileges to collect information about the server.
Which statement is correct?

A) The super privilege is required when creating and populating the inventory table, as well as running statements such as show master logs or SHOW ENGINE INNODB STATUS.
B) The super privilege is required when starting, stopping, or restarting monitored MySQL databases.
C) MySQL Enterprise Monitor creates the required users automatically.
D) Monitoring metrics need super and root privileges because they are not available for a less-privileged user.

2. After installing MySQL 8.0, you initialize the data directory with the --initialize command. Which two are places where you can find the root password?

A) The root password inserted in the error log set by the --log-error=[file_name] variable
B) The root_pw variable stored in the mysq1.install table.
C) As root, execute the show password command by using the SHA-256 password encryption plug-in.
D) The root password displayed on the screen via a [warning] message.
E) The root password is not given and is blank. You must manually set the root password.

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

A) It provides multi-master access where the application can write and read data across the database servers.
B) It allows backup to be done on the slave without impacting the master.
C) MySQL Enterprise Backup will back up from Slave automatically.
D) MySQL Replication Connector/J (ReplicationDriver) is provided to allow read capability on slave and write capability on master.
E) 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.

4. MySQL is installed on a Linux server with the configuration:
Which two methods can change the default options to use the authentication plug-in that implements SHA-256 hashing for user account passwords?

A) Add --default_authentication_plugin=sha256_password on the command line when you invoke the server.
B) Create user by using CREATE USER 'newuser'@'localhost' IDENTIFIED WITH 'Sh@256Pa33';
C) Create user by using CREATE USER 'newuser' @'localhost' SET PASSWORD AS 'Sh@256Pa33';
D) Add default_authentication_plugin=sha256_password under [mysqld] in the configuration file.

5. You are using the innoDB engine and the innodb_f ile_per_table option is set.
You delete a significant number of rows of a large table named inventory and issue the command optimize table inventory.
What will happen to the inventory table?

A) The table will be checked for errors and repaired.
B) The table statistics will be stored.
C) The table storage space will be reduced.
D) The table will be optimized and replicated.

Solutions: