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Oracle 1Z0-921 Certification Exam covers a variety of topics related to MySQL implementation, including installation and configuration, security, backup and recovery, performance tuning, and troubleshooting. Candidates who pass 1Z0-921 exam will have demonstrated their ability to perform tasks such as installing and configuring MySQL, securing the database against unauthorized access, optimizing database performance, and troubleshooting common issues. MySQL 2021 Implementation Essentials certification is a valuable credential for individuals seeking employment in roles such as database administrators, developers, or consultants who work with MySQL databases.

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Oracle MySQL 2021 Implementation Essentials Sample Questions (Q59-Q64):

NEW QUESTION # 59
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. All the MySQL instances (Master and Slave) have the same server_uuid in <datadir>/auto.cnf.
C. The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
D. The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
E. The MASTER and SLAVE are grouped as one instance for monitoring.

Answer: D,E

NEW QUESTION # 60
Consider this SQL statement which is using the innoDB storage engine and with global AUTOCOMMIT = 1:

What is the result after issuing the rollback command?

A. Only the t1 table is created.
B. Both the tables, t1 and t2, are created.
C. Both the tables, t1 and t2, are not created because there is an explicit ROLLBACK.
D. Only the t2 table is created.

Answer: B

NEW QUESTION # 61
You execute this statement:
SELECT NULL=NULL;
What is the result?

A. 0
B. 1
C. NULL
D. TRUE
E. FALSE

Answer: C

NEW QUESTION # 62
When using an Oracle Cloud Infrastructure Compute Instance with MySQL Enterprise Edition installed, you have two choices for backup destinations. What are these two choices?

A. Both Cloud storage and local storage
B. Flash-archive recovery area
C. Cloud storage only
D. Cloud tape library

Answer: A,C

NEW QUESTION # 63
Your newly-created Oracle Cloud Infrastructure instance is not available for login in. Which is a valid reason for this issue?

A. The opc user can be used to access MySQL only with the created SSH-Key.
B. You forgot to enable port 3306.
C. You forgot to create the correct SSL/TLC certificate during the setup process.
D. The OCI instance is still in the "creation" process.
E. Only root is allowed to access from non-localhost.

Answer: B

NEW QUESTION # 64
......

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