Oracle MySQL 2021 Implementation Essentials : 1Z1-921

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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

A) Data to be replicated must be stored in the InnoDB transactional storage engine.
B) Primary keys are required on every replicated table.
C) The minimum number of required nodes for achieving a consensus is two.
D) The use of global transaction identifiers is required.
E) The binary log format must be set to mixed.
F) GR only works with MySQL versions 8.0.12 or higher.

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

A) MySQL Enterprise Authentication determines what operation the user can perform.
B) MySQL Enterprise Edition automatically connects to Oracle Password Vault to verify user passwords..
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 Authentication supports Windows Active Directory.

3. What is true about MySQL Enterprise Transparent Data Encryption (TDE)?

A) Tablespace keys are managed manually behind the scenes.
B) Encryption key is stored in a centralized key memory location
C) Enables data-at-rest encryption by encrypting the physical files of the database.
D) Data is encrypted automatically, in real time, after it is written to storage.

4. Which two deployment architectures could you use for scaling-out database reads?

A) Changing the system setting with memory stickiness to true in order not to swap out mysq1dfrom memory.
B) Adding a memcached-tier for caching data and objects in RAM to reduce the number of times an external data source must be read.
C) Implementing a three-node, single-primary InnoDB Cluster.
D) Edit the configuration file and increase the value for parallel_read_workers and reboot the server
E) Altering the storage engine for all tables to memory to increase performance.

5. Which activity will take place if a table is created with both the compression and encryption options?

A) The system generates an error because the COMPRESSION and ENCRYPTION options cannot be used together.
B) The compression is performed, the ''data_at_rest_flag" is turned on and the tablespace data is encrypted.
C) The tablespace data is encrypted first and then compression is performed.
D) The compression is performed before tablespace data is encrypted.

Solutions: