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Oracle 1Z0-921 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Backup, Recovery, and Replication | - Replication concepts and configuration - Backup strategies |
| Monitoring and Troubleshooting | - Basic troubleshooting techniques - Performance monitoring |
| Database Design and Development | - Schema design principles - Data types and normalization |
| Security and User Management | - User accounts and privileges - Authentication plugins (PAM, AD integration) |
| Data Management and SQL Operations | - SQL queries and DML operations - Indexing and optimization basics |
| MySQL Architecture and Installation | - MySQL server architecture - Installation and configuration |
Oracle MySQL 2021 Implementation Essentials Sample Questions:
Which three are characteristics of the JSON data type?
- A. Comparisons of JSON values are not case-sensitive.
- B. A set of SQL functions substantially support the SQL utilization of the data type.
- C. It supports indexing directly against the JSON-defined column.
- D. It is based on the TEXT data type.
- E. It validates the JSON syntax on insert or merge.
- F. Key or array references enable quick read-access to look up document elements directly.
Correct Answer: C,E,F 🗳️
You just installed MySQL by Using a Package Manager on Linux.
Where are the default InnoDB redo log files stored?
- A. /etc/my.cnf
- B. /var/lib/mysql/innodb
- C. /usr/mysql
- D. /usr/redo
- E. /var/lib/mysql
- F. /usr/bin/logs
Correct Answer: D 🗳️
Which two methods help prevent MySQL security risks?
- A. Use the secure installation script "mysql_alays_secure_installation".
- B. Transmit plain (unencrypted) data over networks.
- C. Allow unauthorized clients to connect to the server.
- D. Ensure that MySQL accounts have short and easy passwords.
- E. Use a firewall to control access to MySQL ports.
- F. Grant only permissions that a user requires.
Correct Answer: B,C 🗳️
What are the two main components required to set up persistent storage for MySQL on Kubernetes?
Response:
- A. Pod and ReplicaSet
- B. Secret and Deployment
- C. PVC (Persistent Volume Claim) and PV (Persistent Volume)
- D. PVC (Persistent Volume Claim) and ConfigMap
Correct Answer: C 🗳️
When should you perform a backup in a MySQL database?
Response:
- A. After critical data updates or before making significant changes to the database.
- B. Only during scheduled maintenance windows.
- C. Only when the database size exceeds a certain limit.
- D. After every successful query execution.
Correct Answer: A 🗳️
