Free 1Z1-921 Questions for Oracle MySQL 2021 Implementation Essentials 1Z1-921 Exam as PDF & Practice Test Engine

Exam Code/Number: 1Z1-921
Exam Name/Title: MySQL 2021 Implementation Essentials
Certification Provider: Oracle
Corresponding Certification: Oracle MySQL

Exam Questions: 78
Updated On: Oct 02, 2026

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 will be optimized and replicated.

B. The table will be checked for errors and repaired.

C. The table statistics will be stored.

D. The table storage space will be reduced.

Discussion 0

Correct Answer: A Vote an answer

Question #2

Which two statements are correct about MySQL Enterprise Edition?

A. Oracle MySQL Enterprise tools & plugins are available as optional services (installation Feature Pack I/II).

B. MySQL Enterprise Edition can be installed on an Oracle Cloud Infrastructure Compute Instance.

C. Oracle offers 24x7, global support for MySQL Enterprise Edition products installed on Oracle Cloud Infrastructure Compute Instances.

D. MySQL configuration can be changed in /etc/lib/myi.cnf.

E. MySQL Enterprise Product Suite can be installed on an Oracle Cloud Infrastructure Virtual Cloud Network.

Discussion 0

Correct Answer: A,D Vote an answer

Question #3

What are Security Lists in Oracle Cloud Infrastructure?

A. They are essentially firewall rules that help control traffic between OCI instances.

B. They allow administrators access to applications in the cloud and external servers.

C. They are user-role designations that assign rights to certain internal users and external users.

D. They contain rules established by HIPAA for securing end-user data.

E. Security lists are data encryption levels that control who can see the data.

Discussion 0

Correct Answer: A Vote an answer

Question #4

Which three are requirements for MySQL Group Replication (GR)?

A. The use of global transaction identifiers is required.

B. The minimum number of required nodes for achieving a consensus is two.

C. Data to be replicated must be stored in the InnoDB transactional storage engine.

D. GR only works with MySQL versions 8.0.12 or higher.

E. Primary keys are required on every replicated table.

F. The binary log format must be set to mixed.

Discussion 0

Correct Answer: C,E,F Vote an answer

Question #5

Which statement is used to create a new MySQL database?
Response:

A. CREATE TABLE

B. CREATE DATABASE

C. CREATE SCHEMA

D. NEW DATABASE

Discussion 0

Correct Answer: B Vote an answer

Question #6

How does MySQL HeatWave improve query performance?
Response:

A. By automatically creating indexes on frequently used columns.

B. By offloading analytics queries to an in-memory, highly parallel processing engine.

C. By caching the entire database in memory.

D. By replicating data across multiple servers.

Discussion 0

Correct Answer: B Vote an answer

Question #7

Which three statements describe MySQL Enterprise Backup?

A. MySQL Enterprise Backup offers backup based on Oracle RMAN with optimized row locking.

B. MySQL Enterprise Backup is an optimized backup based on mysqldump with optimized row locking.

C. MySQL Enterprise Backup can be used to import/export data from on-premises MySQL installations.

D. MySQL Enterprise Backup can be used to send backups to Oracle Cloud Infrastructure Storage Service.

E. MySQL Enterprise Backup provides the point-in-time recovery functionality.

Discussion 0

Correct Answer: A,B,E Vote an answer

Question #8

Which three are recommended configurations for installing and running MySQL InnoDB Cluster?

A. Groups must be in even numbers; 2, 4, 6, 8.

B. The number of machines per group must be 3, 5, 7 or 9.

C. Use Network-attached storage (NAS) for the data files.

D. smaller VM,s work best - with a maximum of eight vCPU,s and 16GB of RAM

E. isolated machine resources

F. use SSD,s for data and replication logs

G. Networks must be in separate regions.

Discussion 0

Correct Answer: A,B,C Vote an answer

Free 1Z1-921 Questions for Oracle MySQL 2021 Implementation Essentials 1Z1-921 Exam as PDF & Practice Test Engine

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