1z0-1105-23 Oracle Cloud Data Management 2023 Foundations Associate Questions and Answers

These two statements are true regarding MySQL Database Service HeatWave. According to the Oracle website3, “HeatWave is a high-performance in-memory query accelerator for MySQL Database Service on Oracle Cloud Infrastructure. It is designed to accelerate analytics workloads (OLAP) and increase the performance of your MySQL databases by orders of magnitude.” Additionally, according to the Oracle website4, “HeatWave uses machine learning to automate operations, increasing DBA productivity and reducing costs. HeatWave AutoML enables developers and data analysts to build, train, deploy, and explain machine learning models in MySQL HeatWave without moving data to a separate machine learning service.”

Hadoop clusters cannot be run on Oracle Database 19c. Hadoop is a framework for distributed processing of large data sets across clusters of computers using simple programming models. Oracle Database 19c is a relational database management system that supports SQL and PL/SQL queries and transactions. Hadoop clusters require a different architecture and storage model than Oracle Database 19c. Oracle Database 19c does not support the Hadoop Distributed File System (HDFS) or the MapReduce programming model.

Oracle Native Network Encryption and TDE are security measures that are implemented out-of-the-box, and are included if you are not using BYOL licensing with Exadata Cloud@Customer. According to the Oracle documentation5, “Oracle Native Network Encryption encrypts all data sent over the network between database clients and servers using industry-standard encryption algorithms.” Additionally, according to the Oracle documentation6, “Transparent Data Encryption (TDE) enables you to encrypt sensitive data, such as credit card numbers, stored in tables and tablespaces.”

This statement is not a prerequisite for patching Grid Infrastructure or database homes when using the console. According to the Oracle documentation8, “Before you patch Grid Infrastructure or database homes, ensure that the following prerequisites are met: All database compute nodes of the VM cluster are up and running. The /u01 directory on the database host file system has at least 15 GB of free space for the execution of patching processes. The required patch is available on the Control Plane server.” This means that Oracle Clusterware must be up and running on the VM cluster before patching, not down.

These are two characteristics of CI/CD, which is a set of practices that automate the building, testing, and deployment stages of software development. According to the Red Hat website9, “CI/CD introduces ongoing automation and continuous monitoring throughout the lifecycle of apps, from integration and testing phases to delivery and deployment.” This means that CI/CD aims to reduce manual tasks and increase efficiency and reliability across the development life cycle. According to the IBM blog10, “Continuous integration (CI) is an automation process for developers. Successful CI means new code changes to an app are regularly built, tested, and merged to a shared repository.” This means that CI/CD enables developers to integrate their code changes frequently and automatically, ensuring code quality and consistency.

Groups is an Oracle Cloud Infrastructure (OCI) Identity and Access Management (IAM) capability that helps you to organize multiple users into teams. According to the Oracle documentation4, “Groups are collections of users who need the same type of access to a particular set of resources. You can use groups to organize users and apply policies to them as a group.”

This statement is true about moving VM DB systems from one compartment to another. According to the Oracle documentation3, “To move resources between compartments, resource users must have sufficient access permissions on the compartment that the resourceis being moved to, as well as the current compartment.” The documentation also provides a step-by-step guide on how to move a DB system to another compartment using the Oracle Cloud Infrastructure Console.

OCI Block Volumes is the service used by default by the MySQL Database Service to store user data to make it more resistant to failures. OCI Block Volumes provides high-performance block storage volumes that can be attached to MySQL DB systems running on OCI Compute instances. Block volumes are always encrypted at rest using AES-256 encryption keys. Block volumes also support backup and restore operations using snapshots or clones that can be used for disaster recovery or testing purposes.

 Persistent memory is the resource that RDMA accesses in Exadata X8M. According to the Oracle website1, “Exadata X8M uses RDMA over Converged Ethernet (RoCE) to directly access the persistent memory in storage servers, bypassing the OS, IO, and network software stacks. This reduces IO latency by up to 10X compared to the previous generation of Exadata.”

OCI REST APIs and OCI Command-line Interface (CLI) are two methods that you can use to create or modify Oracle Cloud Infrastructure resources. According to the Oracle documentation, “The Oracle Cloud Infrastructure APIs are typical REST APIs that use HTTPS requests and responses. You can use these APIs to interact with your cloud resources programmatically.” Additionally, according to the Oracle documentation, “The OCI CLI is a tool that enables you to interact with Oracle Cloud Infrastructure services from the command line.”