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Exam Code: 1Z0-921
Exam Name: MySQL 2021 Implementation Essentials
Updated: Sep 09, 2026
Q & A: 78 Questions and Answers
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| Section | Objectives |
|---|---|
| MySQL Architecture and Installation | - MySQL server architecture - Installation and configuration |
| Backup, Recovery, and Replication | - Backup strategies - Replication concepts and configuration |
| Security and User Management | - User accounts and privileges - Authentication plugins (PAM, AD integration) |
| Database Design and Development | - Schema design principles - Data types and normalization |
| Data Management and SQL Operations | - SQL queries and DML operations - Indexing and optimization basics |
| Monitoring and Troubleshooting | - Performance monitoring - Basic troubleshooting techniques |
Question 1
Which two methods help prevent MySQL security risks?
A. Use a firewall to control access to MySQL ports.
B. Ensure that MySQL accounts have short and easy passwords.
C. Transmit plain (unencrypted) data over networks.
D. Allow unauthorized clients to connect to the server.
E. Grant only permissions that a user requires.
F. Use the secure installation script "mysql_alays_secure_installation".
Question 2
What three are ways to export and import data in MySQL Workbench?
A. SQL Data Export and Import Wizard
B. Binary Data Export and Import Wizard
C. Result Data Export and Import
D. Data Modeling Import Export Wizard
E. Table Data Export and Import Wizard
F. Backup Data Export and Import Wizard
Question 3
Which three options are valid reasons for using a primary key in a table?
A. exporting data faster with mysqldump
B. increasing performance when using select statements
C. automatic storage of data in a sorted order
D. preventing duplicate keys
E. to make it easier to change the PRIMARY KEY value
F. maintaining a history of row insertions or updates
Question 4
You have a backup image file that is backed up using MySQL Enterprise Backup with the -compress option:
/home/mysq1/backup/full/mybackup/myimage. Img
You are required to perform a database restore to a new machine to provision the database. Which command can provision the new database in the datadir as /home/mysql/data/MEB?
A.
B.
C.
D.
E. 
Question 5
What are the two main components required to set up persistent storage for MySQL on Kubernetes?
Response:
A. PVC (Persistent Volume Claim) and PV (Persistent Volume)
B. Secret and Deployment
C. Pod and ReplicaSet
D. PVC (Persistent Volume Claim) and ConfigMap
Solutions:
| Question 1 Answer: C,D | Question 2 Answer: A,C,E | Question 3 Answer: A,B,D | Question 4 Answer: C | Question 5 Answer: A |
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