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Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

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

2. How does MySQL HeatWave improve query performance?
Response:

A) By replicating data across multiple servers.
B) By offloading analytics queries to an in-memory, highly parallel processing engine.
C) By caching the entire database in memory.
D) By automatically creating indexes on frequently used columns.

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

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

4. Which two statements are true about MySQL Enterprise Firewall?

A) MySQL Enterprise Firewall is available only in MySQL Enterprise versions 5.7.10.and later.
B) System tables named firewall_users and firewall_whitelist in the mysql database provide persistent storage of firewall data.
C) Server-side plug-ins named MYSQL_FIREWALL_USERS and MYSQL_FIREWALL-WHITELIST implement INFORMATION_SCHEMA tables that provide views into the firewall data cache.
D) The firewall functionality is dependent upon SHA-256 and ANSI-specific functions built in to the mysql.firewall table. These functions cannot be deleted, even by the root user.
E) On Windows systems, MySQL Enterprise Firewall is controlled and managed by using the Windows Internet Connection Firewall control panel.
F) MySQL Enterprise Firewall shows only notifications blocked connections, which originated outside of your network's primary domain.

5. You want to create an encrypted table. So, you enter this command:
CREATE TABLE 'test_encryption2% (
'id' int(10) unsigned NOT NULL AUTO_INCREMENT,
'server_name' varchar(15) NOT NULL,
PRIMARY KEY ('id') ) ENGINE=MYISAM AUTO_INCREMENT=l DEFAULT CHARSET=latin1 ENCRYPTION = 'Y1; You receive the following error:
ERROR 1031 (HY000): Table storage engine for 'test_encryption2' doesn't have this option Which statement correctly explains the reason for this error?

A) The test_encryption2 already exist. You are not using the correct option to recreate it and it is causing the error.
B) The encryption feature only works with InnoDB tables. You are creating a MylSAM table, and it is causing the error.
C) The term "server_name" is a reserved MySQL term. You cannot use it for the new table. This is what is causing the error.
D) You cannot use the AUTO_INCREMENT option to create an encrypted table. This is what is causing the error.

Solutions: