Oracle 1Z0-921 : MySQL 2021 Implementation Essentials

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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

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

2. 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) Edit the configuration file and increase the value for parallel_read_workers and reboot the server
C) Implementing a three-node, single-primary InnoDB Cluster.
D) Altering the storage engine for all tables to memory to increase performance.
E) Adding a memcached-tier for caching data and objects in RAM to reduce the number of times an external data source must be read.

3. Which four authentication protocols are allowed when using MySQL Enterprise Authentication?

A) authentication using SHA-256 password hashing
B) connections through the local host via the UNIX socket file
C) SECURID authentication and authorization identity
D) Native Windows services
E) Simple Authentication and Security Layer
F) authentication via Pluggable Authentication Modules (PAMs)

4. The slave connects to the master and asks for updated records. What command was issued for this to happen?

A) RUN SLAVE
B) START SLAVE
C) START RUN SLAVE
D) SLAVE RUN
E) SLAVE START

5. Which component of MySQL Enterprise Monitor provides trend analysis and capacity planning for MySQL databases?
Response:

A) MySQL Dashboard
B) MySQL Query Analyzer
C) MySQL Advisors
D) Query Analyzer

Solutions: