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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. What are two ways in which customers can receive notifications such as outages, configuration changes, database emergencies, and other information on their Database as a Service instances?

A) Email
B) Application-to-application messaging
C) SMS-notification tab on the dashboard
D) Browser pop-ups
E) Direct support call from an Oracle representative

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

A) Changing the system setting with memory stickiness to true in order not to swap out mysq1dfrom memory.
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) Edit the configuration file and increase the value for parallel_read_workers and reboot the server
E) Altering the storage engine for all tables to memory to increase performance.

3. Which query will find rows in a table that have no counterpart in another table?

A) SELECT t1.name, t2.name2FROM employee AS t1 INNER JOIN info AS t2 ON t1.name= t2.name2;
B) SELECT left_tbl.*FROM left_tbl LEFT JOIN right_tbl ON left_tbl.id=right_tbl.idWHERE right_tbl.id IS NULL;
C) SELECT *FROM table1 INNER JOIN table2 ON table1.id=table2.id WHERE table1.id=! table2.id;
D) SELECT t1.name, t2.name2FROM employee t1 INNER JOIN info t2 WHERE t1.name=t2.name;

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

5. Which statement adds a column with the largest integer data type?

A) ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(15,10);
B) ALTER TABLE SCIENTIFIC ADD scientific_value BIGINT;
C) ALTER TABLE SCIENTIFIC ADD scientific_value INTEGER;
D) ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(10,10);

Solutions: