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Oracle 1Z0-921 (MySQL 2021 Implementation Essentials) exam is a certification test designed to validate an individual's knowledge and skills in implementing and managing MySQL databases. 1Z1-921 exam is intended for database administrators, developers, and IT professionals who want to demonstrate their proficiency in MySQL database implementation. Passing 1Z1-921 exam can help individuals advance their careers, gain recognition in the industry, and increase their earning potential.

The MySQL 2021 Implementation Essentials certification exam is intended for individuals who are responsible for database administration, development and support. The topics covered in the exam include database architecture, installation and configuration, server administration, security, backup and recovery, and performance tuning. Candidates will be tested on their knowledge of SQL commands, MySQL data types, indexing, character sets, and collations.

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Oracle MySQL 2021 Implementation Essentials Sample Questions (Q75-Q80):

NEW QUESTION # 75
Which three statements describe MySQL Enterprise Backup?

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

Answer: A,B,C

NEW QUESTION # 76
Which two are advantages of using Document Store in MySQL?

A. MySQL provides a NoSQL API to access the document store
B. MySQL can store XML as a schema-less database
C. MySQL provides a native data type to index PDF documents
D. MySQL is a document database allowing PDF and Word documents
E. MySQL provides a native data type to store JSON data as a document

Answer: A,B

NEW QUESTION # 77
Which three components can MySQL InnoDB Cluster use to Achieve database high availability?

A. MySQL X Plugin to enable MySQL to use the X Protocol to speed up and monitor data replication.
B. MySQL Router to ensure client requests are load balanced and routed to the correct servers.
C. MySQL Servers with Group Replication to replicate data to all members of the cluster.
D. MySQL Shell to create and administer InnoDB Clusters using the built-in AdminAPI.
E. MySQL Online Hot Backup to keep data consistent and always ready to be used.

Answer: B,C,D

NEW QUESTION # 78
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

Answer: A,C

NEW QUESTION # 79
Which statement adds a column with the largest integer data type?

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

Answer: A

NEW QUESTION # 80
......

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