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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) 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.
C) MySQL Enterprise Backup will back up from Slave automatically.
D) It provides multi-master access where the application can write and read data across the database servers.
E) It allows backup to be done on the slave without impacting the master.

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

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

3. Which two statements are true about MySQL Enterprise Authentication?

A) MySQL Enterprise Authentication supports Windows Active Directory.
B) MySQL Enterprise Edition automatically connects to Oracle Password Vault to verify user passwords..
C) MySQL Enterprise Authentication makes it more difficult to set up security because you have different sets of security policies.
D) MySQL Enterprise Authentication determines what operation the user can perform.
E) MySQL Enterprise Authentication supports Linux Pluggable Authentication Modules (PAM).

4. The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?

A) On the Master server, disable binlog by removing the --log-bin option.
B) Execute the purge binary logs statement without argument.
C) To safely purge binary log files, perform these steps:
D) Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.
E) Delete all binlog files manually on the file system to release storage spaces.

5. 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/innodb
C) /usr/mysql
D) /usr/redo
E) /var/lib/mysql
F) /usr/bin/logs

Solutions: