Oracle 1Z1-921 Valid Q&A - in .pdf

  • 1Z1-921 pdf
  • Exam Code: 1Z1-921
  • Exam Name: MySQL 2021 Implementation Essentials
  • Updated: Oct 06, 2026
  • Q & A: 78 Questions and Answers
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  • Exam Code: 1Z1-921
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Oracle 1Z1-921 Exam Syllabus Topics:

SectionObjectives
Topic 1: Database Design and Development- Data types and normalization
- Schema design principles
Topic 2: Data Management and SQL Operations- Indexing and optimization basics
- SQL queries and DML operations
Topic 3: MySQL Architecture and Installation- MySQL server architecture
- Installation and configuration
Topic 4: Monitoring and Troubleshooting- Basic troubleshooting techniques
- Performance monitoring
Topic 5: Backup, Recovery, and Replication- Replication concepts and configuration
- Backup strategies
Topic 6: Security and User Management- User accounts and privileges
- Authentication plugins (PAM, AD integration)

Oracle MySQL 2021 Implementation Essentials Sample Questions:

Question #1

You are using the innoDB engine and the innodb_f ile_per_table option is set.
You delete a significant number of rows of a large table named inventory and issue the command optimize table inventory.
What will happen to the inventory table?

  • A. The table storage space will be reduced.
  • B. The table will be checked for errors and repaired.
  • C. The table statistics will be stored.
  • D. The table will be optimized and replicated.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #2

Which MySQL Enterprise Edition plug-in replaces real values with substitutes?

  • A. MySQL Enterprise Transparent Data Encryption (TDE)
  • B. MySQL Enterprise Data Masking and De-identification
  • C. MySQL Enterprise Scalability
  • D. MySQL Enterprise Audit
  • E. MySQL Enterprise No-Login Authentication
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #3

Which two methods help prevent MySQL security risks?

  • A. Ensure that MySQL accounts have short and easy passwords.
  • B. Use the secure installation script "mysql_alays_secure_installation".
  • C. Use a firewall to control access to MySQL ports.
  • D. Allow unauthorized clients to connect to the server.
  • E. Grant only permissions that a user requires.
  • F. Transmit plain (unencrypted) data over networks.
Reveal Solution  Discussion  0

Correct Answer: D,F  🗳️

Question #4

Which features of MySQL Enterprise Edition should you use to proactively monitor and track data changes in your databases?

  • A. MySQL Audit and MySQL Workbench
  • B. MySQL Workbench and MySQL Enterprise Firewall
  • C. SQL Enterprise Monitor and MySQL Enterprise Authentication
  • D. MySQL Enterprise Monitor and MySQL Audit
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #5

What SQL keyword must be specified when creating a foreign key constraint?

  • A. the SET_FOREGIN variable in the my .cnf file
  • B. an index on the foreign key
  • C. unique PRIMARY key values for both child and parent tables
  • D. a TRIGGER on the child table for cascading delete statements
  • E. a REFERENCES in the child table to the parent table
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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