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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which three prerequisites are needed for creating an Oracle Linux VM instance in the Oracle Cloud Infrastructure?

A) subnet configured on a Virtual Cloud Network (VCN)
B) bare metal Oracle Linux shape
C) Custom Image
D) Object Storage
E) existing VCN
F) ssh key pair

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

A) 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.
B) On Windows systems, MySQL Enterprise Firewall is controlled and managed by using the Windows Internet Connection Firewall control panel.
C) System tables named firewall_users and firewall_whitelist in the mysql database provide persistent storage of firewall data.
D) MySQL Enterprise Firewall is available only in MySQL Enterprise versions 5.7.10.and later.
E) MySQL Enterprise Firewall shows only notifications blocked connections, which originated outside of your network's primary domain.
F) Server-side plug-ins named MYSQL_FIREWALL_USERS and MYSQL_FIREWALL-WHITELIST implement INFORMATION_SCHEMA tables that provide views into the firewall data cache.

3. Which three statements describe MySQL Enterprise Backup?

A) MySQL Enterprise Backup can be used to import/export data from on-premises MySQL installations.
B) MySQL Enterprise Backup can be used to send backups to Oracle Cloud Infrastructure Storage Service.
C) MySQL Enterprise Backup is an optimized backup based on mysqldump with optimized row locking.
D) MySQL Enterprise Backup offers backup based on Oracle RMAN with optimized row locking.
E) MySQL Enterprise Backup provides the point-in-time recovery functionality.

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

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

5. Which two deployment architectures could you use for scaling-out database reads?

A) Altering the storage engine for all tables to memory to increase performance.
B) Adding a memcached-tier for caching data and objects in RAM to reduce the number of times an external data source must be read.
C) Implementing a three-node, single-primary InnoDB Cluster.
D) Changing the system setting with memory stickiness to true in order not to swap out mysq1dfrom memory.
E) Edit the configuration file and increase the value for parallel_read_workers and reboot the server

Solutions: