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Oracle 1Z1-921 Exam Syllabus Topics:

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 does not have proper user rights.
B) The customer reached the database instance limit of 32.
C) 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.
D) The customer account might have reached resource quota/limits.

2. Which best describes database horizontal scale-out architecture deployment in MySQL in a read-heavy environment?

A) Increasing the storage capacity so that the database can store more data to scale.
B) Increasing the memory capacity so that there is a larger pooling buffer to increase the database read performance.
C) Allocating more CPU to the database instance to improve throughput performance.
D) Deploy MySQL read-only slaves utilizing replication so that the slaves can be used for reads.
E) Adding more MySQL servers and sharing the same dacadir on a shared storage component like NFS.

3. Which two statements about the download of MySQL Enterprise Backup are correct?

A) MySQL Enterprise Backup comes with MySQL Connector and is freely available for download.
B) MySQL Enterprise Backup comes with all MySQL editions including community edition.
C) MySQL Enterprise Backup is a separate package from MySQL Enterprise Edition. It can be downloaded from https://edelivery.oracle.com.
D) MySQL Enterprise Backup can be downloaded from My Oracle Support (MOS).
E) MySQL Enterprise Backup comes with MySQL Utilities Package, which is available for download publicly on http://www.mysql.com.

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

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

5. Which two statements are true about MySQL Enterprise Authentication?

A) MySQL Enterprise Authentication supports Windows Active Directory.
B) MySQL Enterprise Authentication determines what operation the user can perform.
C) MySQL Enterprise Authentication supports Linux Pluggable Authentication Modules (PAM).
D) MySQL Enterprise Authentication makes it more difficult to set up security because you have different sets of security policies.
E) MySQL Enterprise Edition automatically connects to Oracle Password Vault to verify user passwords..

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