Oracle Cloud Infrastructure Architect Associate — Lesson 2: VCN Architecture, Connectivity, Load Balancing, and DNS

Technical Scope

• VCNs, CIDRs, subnets, routes, and gateways
• security lists and network security groups
• DRG, FastConnect, VPN, peering, and private access
• load balancers, DNS, and traffic management

Instructor Demonstration

Demonstrate VCNs, CIDRs, subnets, routes, and gateways inside a customer-facing service revised for private connectivity, regulation, growth, regional failure, and budget limits, then capture the exact configuration, command, transaction, report, or code evidence that proves the result.

Applied Workshop

Implement a controlled workshop covering security lists and network security groups and DRG, FastConnect, VPN, peering, and private access, then test a failure or exception involving load balancers, DNS, and traffic management.

1. Confirm environment, identity, data, dependencies, and expected result.
2. Complete the product-specific implementation or analysis.
3. Capture commands, configuration, output, logs, transactions, or reports.
4. Explain the operational, security, performance, or business trade-off.

Validation Standard

The VCN Architecture, Connectivity, Load Balancing, and DNS result must be reproducible, traceable to approved inputs, and consistent with the expected Oracle product behavior.

• The intended target and ownership are verified.
• The result is supported by reproducible evidence.
• Security, performance, reliability, and support impact are reviewed.
• Unexpected behavior is investigated before acceptance.

Failure Analysis

Diagnose issues in VCNs, CIDRs, subnets, routes, and gateways, security lists and network security groups, DRG, FastConnect, VPN, peering, and private access, or load balancers, DNS, and traffic management without making an unverified production change.

Learners isolate the smallest proven cause, apply a reversible correction, rerun validation, and record the preventive action.