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Oracle 1Z1-921 real answers - MySQL 2021 Implementation Essentials

1Z1-921
  • Exam Code: 1Z1-921
  • Exam Name: MySQL 2021 Implementation Essentials
  • Updated: Oct 15, 2025
  • Q & A: 78 Questions and Answers
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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. An Oracle Cloud Infrastructure customer already has many database instances configured and running in the cloud; however, they are reporting that they are unable to create any more instances.
What could be the problem?

A) The customer account might have reached resource quota/limits.
B) The customer does not have proper user rights.
C) The customer reached the database instance limit of 32.
D) The customer has not kept up with their patching requirements; new instances cannot be created unless the majority or the template of existing instances are up-to-date.


2. Which three are characteristics of the JSON data type?

A) Key or array references enable quick read-access to look up document elements directly.
B) It validates the JSON syntax on insert or merge.
C) Comparisons of JSON values are not case-sensitive.
D) It is based on the TEXT data type.
E) A set of SQL functions substantially support the SQL utilization of the data type.
F) It supports indexing directly against the JSON-defined column.


3. MySQL Enterprise Masking and De-identification can hide or obfuscate sensitive data, by controlling how the data appears. Which three are MySQL Enterprise Masking and De-identification functions?

A) strict or relaxed masking
B) random data substitution
C) misspelling
D) whitelisting and substitution
E) dictionary substitution


4. Which three are levels in which MySQL Enterprise Monitor provides access control?

A) MySQL Enterprise Operations: the right to deploy the necessary MySQL Enterprise Agent
B) MySQL Enterprise Operations: the right to start/stop/restart/update MySQL Enterprise Monitor Services
C) Application administration: the rights to view or change the MySQL Enterprise Monitor configuration
D) Asset visibility: the rights to access data collected from hosts or MySQL instances
E) Specific data access: the rights to view specific types of potentially sensitive data


5. Which three statements describe MySQL Enterprise Backup?

A) MySQL Enterprise Backup can be used to send backups to Oracle Cloud Infrastructure Storage Service.
B) MySQL Enterprise Backup is an optimized backup based on mysqldump with optimized row locking.
C) MySQL Enterprise Backup offers backup based on Oracle RMAN with optimized row locking.
D) MySQL Enterprise Backup can be used to import/export data from on-premises MySQL installations.
E) MySQL Enterprise Backup provides the point-in-time recovery functionality.


Solutions:

Question # 1
Answer: C
Question # 2
Answer: A,B,F
Question # 3
Answer: A,B,E
Question # 4
Answer: C,D,E
Question # 5
Answer: B,C,E

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