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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

2. You are using the innoDB engine and the innodb_f ile_per_table option is set.
You delete a significant number of rows of a large table named inventory and issue the command optimize table inventory.
What will happen to the inventory table?

A) The table storage space will be reduced.
B) The table will be checked for errors and repaired.
C) The table statistics will be stored.
D) The table will be optimized and replicated.

3. 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.

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

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

5. After installing MySQL 8.0, you initialize the data directory with the --initialize command. Which two are places where you can find the root password?

A) As root, execute the show password command by using the SHA-256 password encryption plug-in.
B) The root_pw variable stored in the mysq1.install table.
C) The root password is not given and is blank. You must manually set the root password.
D) The root password inserted in the error log set by the --log-error=[file_name] variable
E) The root password displayed on the screen via a [warning] message.

Solutions: