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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?

A) On the Master server, disable binlog by removing the --log-bin option.
B) Delete all binlog files manually on the file system to release storage spaces.
C) Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.
D) To safely purge binary log files, perform these steps:
E) Execute the purge binary logs statement without argument.

2. 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..

3. What are Security Lists in Oracle Cloud Infrastructure?

A) They are essentially firewall rules that help control traffic between OCI instances.
B) Security lists are data encryption levels that control who can see the data.
C) They contain rules established by HIPAA for securing end-user data.
D) They are user-role designations that assign rights to certain internal users and external users.
E) They allow administrators access to applications in the cloud and external servers.

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) Key or array references enable quick read-access to look up document elements directly.
E) It supports indexing directly against the JSON-defined column.
F) Comparisons of JSON values are not case-sensitive.

5. Which three components can MySQL InnoDB Cluster use to Achieve database high availability?

A) MySQL Shell to create and administer InnoDB Clusters using the built-in AdminAPI.
B) MySQL Router to ensure client requests are load balanced and routed to the correct servers.
C) MySQL Servers with Group Replication to replicate data to all members of the cluster.
D) MySQL X Plugin to enable MySQL to use the X Protocol to speed up and monitor data replication.
E) MySQL Online Hot Backup to keep data consistent and always ready to be used.

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