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Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

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

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

A) The number of machines per group must be 3, 5, 7 or 9.
B) Use Network-attached storage (NAS) for the data files.
C) Networks must be in separate regions.
D) Groups must be in even numbers; 2, 4, 6, 8.
E) use SSD,s for data and replication logs
F) smaller VM,s work best - with a maximum of eight vCPU,s and 16GB of RAM
G) isolated machine resources

3. Which two are advantages of using Document Store in MySQL?

A) MySQL provides a native data type to store JSON data as a document
B) MySQL provides a native data type to index PDF documents
C) MySQL is a document database allowing PDF and Word documents
D) MySQL provides a NoSQL API to access the document store
E) MySQL can store XML as a schema-less database

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

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

5. Which two methods help prevent MySQL security risks?

A) Ensure that MySQL accounts have short and easy passwords.
B) Use a firewall to control access to MySQL ports.
C) Grant only permissions that a user requires.
D) Use the secure installation script "mysql_alays_secure_installation".
E) Transmit plain (unencrypted) data over networks.
F) Allow unauthorized clients to connect to the server.

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