- Exam Code: 1Z1-921
- Exam Name: MySQL 2021 Implementation Essentials
- Updated: Sep 14, 2026
- Q & A: 78 Questions and Answers
Oracle MySQL 2021 Implementation Essentials : 1Z1-921
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Oracle 1Z1-921 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Security and User Management | - User accounts and privileges - Authentication plugins (PAM, AD integration) |
| Database Design and Development | - Data types and normalization - Schema design principles |
| MySQL Architecture and Installation | - MySQL server architecture - Installation and configuration |
| Monitoring and Troubleshooting | - Performance monitoring - Basic troubleshooting techniques |
| Data Management and SQL Operations | - SQL queries and DML operations - Indexing and optimization basics |
| Backup, Recovery, and Replication | - Backup strategies - Replication concepts and configuration |
Oracle MySQL 2021 Implementation Essentials Sample Questions:
Question #1
Which three are requirements for MySQL Group Replication (GR)?
- A. GR only works with MySQL versions 8.0.12 or higher.
- B. The binary log format must be set to mixed.
- C. Data to be replicated must be stored in the InnoDB transactional storage engine.
- D. The use of global transaction identifiers is required.
- E. Primary keys are required on every replicated table.
- F. The minimum number of required nodes for achieving a consensus is two.
Correct Answer: B,C,E 🗳️
Question #2
Which three installation options are available for installing the MySQL Enterprise Monitor/Agent on Linux?
- A. A GUI for installing MySQL Enterprise Monitor, Agent, and a MySQL Repository database
- B. A MySQL Enterprise Monitor to remotely deploy the MySQL Monitor Agent
- C. A browser-based wizard to remotely deploy the MySQL Monitor Agent
- D. A script (with an option file) for installing MySQL Enterprise Monitor, Agent, and a MySQL Repository database
- E. A CLI-based wizard MySQL Enterprise Monitor, Agent, and a MySQL Repository database
Correct Answer: A,D,E 🗳️
Question #3
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. Only root is allowed to access from non-localhost.
- D. The OCI instance is still in the "creation" process.
- E. You forgot to create the correct SSL/TLC certificate during the setup process.
Correct Answer: B 🗳️
Question #4
How does MySQL HeatWave improve query performance?
Response:
- A. By offloading analytics queries to an in-memory, highly parallel processing engine.
- B. By automatically creating indexes on frequently used columns.
- C. By replicating data across multiple servers.
- D. By caching the entire database in memory.
Correct Answer: A 🗳️
Question #5
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. Alter the table with the statement: ALTER TABLE IMPORT DATA WITH data_masking plugin;
- C. Use MySQL Enterprise High Availability to access one of the available data tables
- D. Execute the sakila-data. sqi script to populate the database
Correct Answer: B 🗳️
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