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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

Question 1

You are testing a new application and want to use data masking but the database is empty. What option will generate dummy data for you to use for testing?

A. Use mysqldump to import data from the sakila_dummy database sample data set.
B. Execute the sakila-data. sqi script to populate the database
C. Use MySQL Enterprise High Availability to access one of the available data tables
D. Alter the table with the statement: ALTER TABLE IMPORT DATA WITH data_masking plugin;

Question 2

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

A. SELECT left_tbl.*FROM left_tbl LEFT JOIN right_tbl ON left_tbl.id=right_tbl.idWHERE right_tbl.id IS NULL;
B. SELECT t1.name, t2.name2FROM employee AS t1 INNER JOIN info AS t2 ON t1.name= t2.name2;
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;

Question 3

Which MySQL Enterprise Edition plug-in replaces real values with substitutes?

A. MySQL Enterprise Transparent Data Encryption (TDE)
B. MySQL Enterprise No-Login Authentication
C. MySQL Enterprise Scalability
D. MySQL Enterprise Audit
E. MySQL Enterprise Data Masking and De-identification

Question 4

You have a MySQL Server instance (running with Port# 3306) monitored by the Service Manager in MySQL Enterprise Monitor. You cloned the MySQL Database instance and configured it to be a replicated MySQL instance as Slave using Port# 3316 on the same machine as the Master Server. The replication configuration is working correctly. The Master and Slave Servers are running.
You are trying to add the newly created MySQL Slave instance to the Monitor. The Service Manager in MySQL Enterprise Monitor notifies you that the new instance is successfully added; however, it is not added correctly at the newly added configuration points to the old Master monitored items. The Monitor shows only one monitored MySQL instance for Master and Slave.
Which two are possible reasons for this problem?

A. The mysql.inventory table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
B. The MASTER and SLAVE are grouped as one instance for monitoring.
C. All the MySQL instances (Master and Slave) have the same server_uuid in <datadir>/auto.cnf.
D. The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
E. The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.

Question 5

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

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

Solutions: