1z0-1195-25 Oracle Data Platform 2025 Foundations Associate Questions and Answers

For connections to multiple public clouds via 3rd-party connectivity, Oracle supports "Megaport Cloud Router (MCR) and Virtual Cross Connect (VXC)" (C). Megaport provides a cloud router and virtual cross-connects to link OCI with other clouds (e.g., AWS, Azure) through a global network. "Layer 3 and FastConnect" (A) is incomplete, "VCNs and Amazon VPC" (B) are internal constructs, and "FastConnect and Direct Connect" (D) are specific to Oracle and AWS, not a 3rd-party solution. Oracle’s multicloud connectivity documentation confirms Megaport’s role.

For the "MySQL Database Service," the "Start" command (A) resumes OCPU billing, as it activates the database instance, incurring compute costs. "Stop" (B) halts billing by suspending the instance, "Restart" (C) is a stop-then-start sequence, and "Backup" (D) affects storage, not OCPU billing. Oracle’s MySQL Service documentation ties billing to the Start command.

A "MySQL Database Service DB System" includes a "Compute Instance" (A) for processing, a "Virtual Network Interface" (B) for networking, and "Block Storage" (D) for data. "FastConnect" (C), a high-speed connectivity service to OCI, is not a component of the DB system itself but an optional external connection. Oracle’s MySQL Service documentation lists the core components, excluding FastConnect.

In Oracle’s Data Lakehouse architecture, data persistence refers to the storage layer where data is durably maintained. "Autonomous Database" (B) provides a managed, self-tuning relational database for structured data persistence, supporting SQL-based workloads. "OCI Object Storage" (D) offers scalable, durable storage for unstructured and semi-structured data, such as files, images, and logs, serving as the data lake component of the Lakehouse. "OCI Data Catalog" (A) is a metadata management service, not a persistence layer, and "OCI GoldenGate" (C) handles data replication and integration, not direct storage. Oracle’s Lakehouse documentation identifies Autonomous Database and OCI Object Storage as the primary persistence services.

"SQLcl (including Liquibase)" (D) is the tool provided to support CI/CD workflows. SQLcl integrates with Liquibase to track, version, and deploy database schema changes, aligning withCI/CD pipelines. "ADB console" (A) is for monitoring, "Database Actions" (B) is for SQL tasks, and "SQL Developer" (C) is a GUI tool, none of which are CI/CD-focused. Oracle’s documentation highlights SQLcl’s Liquibase integration for DevOps workflows.

Full Detailed In-Depth Explanation: Oracle APEX (Application Express) is a leading low-code platform designed to simplify and accelerate application development, particularly within the Oracle ecosystem. The two main features of APEX’s low-code platform are "Use graphical user interfaces and configuration" (D) and "Focus on business requirements" (F). Option D reflects APEX’s core strength: it provides a browser-based, declarative development environment with drag-and-drop functionality, wizards, and visual UI tools, allowing developers and business users to build applications with minimal coding. This reduces complexity and speeds up development, aligning with the low-code philosophy. Option F highlights APEX’s emphasis on enabling users to address business needs directly, rather than getting bogged down in technical intricacies, by offering prebuilt components and templates tailored to solve real-world problems efficiently. "Limited productivity" (A) is incorrect, as APEX enhances productivity significantly. "Build scalable web apps for MongoDB" (B) is false, as APEX is optimized for Oracle Database, not MongoDB. "Simplified core-based licensing" (C) is a licensing aspect, not a development feature, and "Use traditional computer programming paradigms" (E) contradicts APEX’s low-code approach, which minimizes hand-coding. Oracle’s official APEX documentation emphasizes its graphical, business-focused design as key differentiators.

A prerequisite for running "APEX" (Application Express) on an Autonomous Database is provisioning "an Autonomous Database with the workload type Data Warehouse, TransactionProcessing, JSON, or APEX" (B). APEX is supported across these workload types, with ORDS (Oracle REST Data Services) pre-enabled. Option A is incorrect, as ORDS is automatically configured. Option C is too restrictive, as APEX isn’t limited to the APEX workload type alone. Option D is unnecessary, as user creation follows provisioning, not precedes it. Oracle’s Autonomous Database documentation confirms APEX availability across these workload types with no manual ORDS setup required.

The "built-in SQL Worksheet and Notebook" (e.g., in Autonomous Database’s Database Actions) have two true statements: "No need to install a client query tool" (C), as it’s web-based and accessible via browser, and "Quickly start running queries with built-in web-based notebooks" (D), enabling immediate SQL execution. "Based on Apache Tomcat" (A) is not specified in documentation, and "Need to install client query tool for the PL/SQL" (B) is false due to its integrated nature. Oracle’s documentation confirms these web-based features.

"Autonomous Transaction Processing" (ATP) is "used for OLTP and mixed workloads" (A), designed for high-performance transactional processing and hybrid workloads. "Data is stored in columnar format" (B) applies to Autonomous Data Warehouse, not ATP. "Used for analytic workloads" (C) is ADW’s focus, and "Used with data marts and machine learning" (D) is more ADW-specific. Oracle’s ATP documentation confirms its OLTP focus.

For migrating "old database backups" to OCI, "Archive Storage" (D) is the most cost-effective service. Archive Storage offers the lowest cost per gigabyte for long-term, infrequently accessed data, ideal for backups that don’t require immediate retrieval. "Object Storage (standard)" (A) is more expensive and suited for frequent access, "Block Volume" (B) is high-performance and costly, and "File Storage" (C) is for active file systems. Oracle’s storage pricing and use case documentation recommend Archive Storage for cost-effective backup archival.

The "Autonomous Database" offers self-service tools like "Oracle Machine Learning" (B), enabling users to build ML models directly in the database, and "Low-Code App Dev, APEX" (C), allowing rapid application development via Oracle APEX. "Business Objects" (A) is a third-party BI tool, not native to ADB, and "Encryption only in Object Storage" (D) is a feature, not a tool, and inaccurate (encryption is broader). Oracle’s documentation highlights OML and APEX as key self-service capabilities.

Customers may not move databases to the public cloud due to "Putting data in the cloud would break data residency rules" (A), where laws mandate data remain in specific regions, and "Regulations that prevent moving data into the public cloud" (B), such as industry-specific compliance requirements (e.g., GDPR, HIPAA). "Total Cost of Ownership in public cloud is higher" (C) is a consideration but not a universal barrier, and "Public cloud does not provide storage for more than 10TB" (D) is false, as OCI offers vast storage options. Oracle’s cloud adoption guides cite residency and regulatory constraints as common blockers.

To create or modify Oracle Cloud Infrastructure (OCI) resources, "OCI REST APIs" (A) and "OCI Command-line Interface (CLI)" (C) are two primary methods. OCI REST APIs allow programmatic management of resources via HTTP requests, while the OCI CLI provides a command-line tool for scripting and automation. "Remote Desktop Protocol (RDP)" (B) is for accessing Windows-based systems, not OCI resource management, and "Secure Shell (SSH)" (D) is for accessing compute instances, not broadly creating or modifying resources. Oracle’s OCI documentation confirms REST APIs and CLI as standard management tools.

When registering "Exadata Cloud@Customer" in an OCI region, you must "consider any business policies or regulations that preclude the use of a particular region" (A), as compliance (e.g., data residency laws) dictates region selection. You should also "consider the physical proximity of the region you register the infrastructure into your data center" (D), as proximity reduces latency for control plane interactions. Option B is false because, despite being hosted on-premises, Exadata Cloud@Customer is registered in an OCI region for management. Option C is incorrect, as the region cannot be changed post-creation without significant reconfiguration. Oracle’s documentation highlights these considerations for region selection.