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MySQL 2021 Implementation Essentials: 1Z0-921 Exam
"MySQL 2021 Implementation Essentials", also known as 1Z0-921 exam, is a Oracle Certification. With the complete collection of questions and answers, ExamcollectionPass has assembled to take you through 78 Q&As to your 1Z0-921 Exam preparation. In the 1Z0-921 exam resources, you will cover every field and category in Oracle MySQL Certification helping to ready you for your successful Oracle Certification.
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Oracle 1Z0-921 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Database Design and Development | - Schema design principles - Data types and normalization |
| Topic 2: Backup, Recovery, and Replication | - Replication concepts and configuration - Backup strategies |
| Topic 3: MySQL Architecture and Installation | - MySQL server architecture - Installation and configuration |
| Topic 4: Monitoring and Troubleshooting | - Basic troubleshooting techniques - Performance monitoring |
| Topic 5: Data Management and SQL Operations | - SQL queries and DML operations - Indexing and optimization basics |
| Topic 6: Security and User Management | - User accounts and privileges - Authentication plugins (PAM, AD integration) |
Oracle MySQL 2021 Implementation Essentials Sample Questions:
Which three are characteristics of the JSON data type?
- A. It validates the JSON syntax on insert or merge.
- B. Comparisons of JSON values are not case-sensitive.
- C. It is based on the TEXT data type.
- D. A set of SQL functions substantially support the SQL utilization of the data type.
- E. Key or array references enable quick read-access to look up document elements directly.
- F. It supports indexing directly against the JSON-defined column.
Correct Answer: A,E,F 🗳️
You want to change the default behavior of MySQL Enterprise Monitor (MEM). New instances detected by a MEM agent should automatically monitor discovered instances.
How can you change the Advisor Setting?
- A. Go to the configuration section (Advisors) and create a new advisor rule for new MySQL instances based on the MySQL Advisor Wizard.
- B. Go to the configuration section (MEM) and configure the default login credentials.
- C. Go to the configuration section (Users) and create a new user according to the existing users of your new MySQL instances.
- D. Go to the configuration section (Advisors) and edit the default settings of the MySQL Process Discovery according to the existing users of your new MySQL instances.
Correct Answer: D 🗳️
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. Use the secure installation script "mysql_alays_secure_installation".
- E. Allow unauthorized clients to connect to the server.
- F. Grant only permissions that a user requires.
Correct Answer: C,E 🗳️
You just installed MySQL by Using a Package Manager on Linux.
Where are the default InnoDB redo log files stored?
- A. /var/lib/mysql
- B. /usr/redo
- C. /usr/bin/logs
- D. /etc/my.cnf
- E. /var/lib/mysql/innodb
- F. /usr/mysql
Correct Answer: B 🗳️
Which two statements about the download of MySQL Enterprise Backup are correct?
- A. MySQL Enterprise Backup comes with MySQL Utilities Package, which is available for download publicly on http://www.mysql.com.
- B. MySQL Enterprise Backup comes with all MySQL editions including community edition.
- C. MySQL Enterprise Backup can be downloaded from My Oracle Support (MOS).
- D. MySQL Enterprise Backup is a separate package from MySQL Enterprise Edition. It can be downloaded from https://edelivery.oracle.com.
- E. MySQL Enterprise Backup comes with MySQL Connector and is freely available for download.
Correct Answer: B,D 🗳️
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