Oracle 1Z1-921 : MySQL 2021 Implementation Essentials
- Exam Code: 1Z1-921
- Exam Name: MySQL 2021 Implementation Essentials
- Updated: Oct 08, 2026
- Q & A: 78 Questions and Answers
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Oracle 1Z1-921 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Management and SQL Operations | - SQL queries and DML operations - Indexing and optimization basics |
| Security and User Management | - Authentication plugins (PAM, AD integration) - User accounts and privileges |
| Database Design and Development | - Data types and normalization - Schema design principles |
| Backup, Recovery, and Replication | - Backup strategies - Replication concepts and configuration |
| MySQL Architecture and Installation | - MySQL server architecture - Installation and configuration |
| Monitoring and Troubleshooting | - Performance monitoring - Basic troubleshooting techniques |
Oracle MySQL 2021 Implementation Essentials Sample Questions:
Which three prerequisites are needed for creating an Oracle Linux VM instance in the Oracle Cloud Infrastructure?
- A. subnet configured on a Virtual Cloud Network (VCN)
- B. Object Storage
- C. existing VCN
- D. Custom Image
- E. bare metal Oracle Linux shape
- F. ssh key pair
Correct Answer: B,D,E 🗳️
What three are ways to export and import data in MySQL Workbench?
- A. Binary Data Export and Import Wizard
- B. SQL Data Export and Import Wizard
- C. Backup Data Export and Import Wizard
- D. Result Data Export and Import
- E. Table Data Export and Import Wizard
- F. Data Modeling Import Export Wizard
Correct Answer: B,D,E 🗳️
Which activity will take place if a table is created with both the compression and encryption options?
- A. The system generates an error because the COMPRESSION and ENCRYPTION options cannot be used together.
- B. The compression is performed, the ''data_at_rest_flag" is turned on and the tablespace data is encrypted.
- C. The tablespace data is encrypted first and then compression is performed.
- D. The compression is performed before tablespace data is encrypted.
Correct Answer: D 🗳️
Which is true about inserting an additional line in a single document stored in MySQL document store?
- A. You specify the new element,s position in the JSON_ARRAY_INSERT statement.
- B. The path specified must be an array position past the end of an array using the JSON_POSITION statement.
- C. You cannot insert a single line, you have to replace the entire document with a new document.
- D. Any new lines can only be inserted at the end of the document.
Correct Answer: A 🗳️
Which three options are valid reasons for using a primary key in a table?
- A. increasing performance when using select statements
- B. automatic storage of data in a sorted order
- C. exporting data faster with mysqldump
- D. to make it easier to change the PRIMARY KEY value
- E. maintaining a history of row insertions or updates
- F. preventing duplicate keys
Correct Answer: A,C,F 🗳️
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