Oracle 1Z0-1124-25 Exam Dumps

Requirements: App tier (public) needs internet; DB tier (private) must not.

Components:

Internet Gateway: Full internet access for public subnets.

NAT Gateway: Outbound-only internet for private subnets.

Service Gateway: Private OCI service access.

Evaluate Options:

A: Reversed roles; public subnet doesn't need Service Gateway; incorrect.

B: NAT for public is unnecessary with Internet Gateway; inefficient.

C: NAT for public is wrong; Service Gateway doesn't block DB internet; incorrect.

D: Internet Gateway for app, NAT for DB if needed, aligns with policy; correct.

Conclusion: Option D is most secure and efficient.

Subnet roles dictate gateway use. The Oracle Networking Professional study guide states, 'Public subnets use an Internet Gateway for full internet access, while private subnets can use a NAT Gateway for outbound-only access, ensuring no direct internet exposure' (OCI Networking Documentation, Section: VCN Gateways). Option D balances security and functionality.

Purpose: Secure access to private subnet resources via Bastion.

Placement Considerations: Must be internet-accessible yet isolated.

Evaluate Options:

A: Private subnet lacks internet access for Bastion; incorrect.

B: Dedicated public subnet balances accessibility and isolation; correct.

C: Separate VCN adds complexity, unnecessary; less optimal.

D: Ambiguous phrasing, but implies exposure; less precise than B.

Conclusion: Dedicated public subnet is the best placement.

OCI Bastion requires public access with security. The Oracle Networking Professional study guide notes, 'Place the Bastion host in a public subnet with a dedicated configuration to allow secure SSH access to private subnet resources without exposing them directly' (OCI Networking Documentation, Section: Bastion Host Placement). Option B ensures this balance.

Objective: Correlate Flow Logs and Service Logs for troubleshooting.

Option A: Log Groups organize logs but don't analyze correlations---incorrect.

Option B: Log Analytics enables querying and visualizing logs from multiple sources, ideal for correlation---correct.

Option C: Log Streams collect logs but don't correlate---incorrect.

Option D: Log Export moves logs, not analyzes them---incorrect.

Conclusion: Log Analytics is the best feature.

Oracle documentation confirms:

'Log Analytics allows you to correlate and analyze logs from Flow Logs and Service Logs, providing insights for troubleshooting.'

This validates Option B. Reference: Log Analytics Overview - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Logging/Concepts/loganalytics.htm).

Goal: Minimize maintenance of Bastion session configurations.

Bastion Options:

Individual Sessions: High maintenance per instance.

Dynamic Port Forwarding: Flexible but user-managed, prone to errors.

Centralized Service: Predefined targets, low maintenance.

Separate Hosts: Increases complexity and overhead.

Evaluate Options:

A: Per-instance sessions require constant updates; inefficient.

B: SOCKS5 shifts burden to users; moderate maintenance.

C: Centralized with managed sessions reduces effort; optimal.

D: Multiple hosts multiply management tasks; worst option.

Conclusion: Centralized Bastion with managed sessions is most efficient.

OCI Bastion service supports centralized management. The Oracle Networking Professional study guide notes, 'A centralized Bastion service with managed sessions and predefined target configurations minimizes administrative overhead by streamlining access to private subnet resources' (OCI Networking Documentation, Section: Bastion Service). This approach leverages OCI's automation capabilities.

Constraints: High bandwidth, low latency, secure private connection, redundancy.

Option A: Single VPN Connect offers security but lacks high bandwidth, low latency, and redundancy---unsuitable for migration needs.

Option B: Multiple VPNs improve redundancy but still rely on public internet, limiting bandwidth and latency performance compared to dedicated circuits.

Option C: Single FastConnect provides high bandwidth, low latency, and privacy via a dedicated line, but lacks redundancy.

Option D: Multiple FastConnect circuits ensure high bandwidth and low latency with redundancy. Adding multiple VPNs as backup enhances resilience, meeting all constraints.

Conclusion: Option D is the most suitable and resilient, balancing performance and continuity.

Oracle states:

'FastConnect provides a private, high-bandwidth, low-latency connection to OCI. Use multiple circuits for redundancy.'

'Combine FastConnect with IPSec VPN for additional failover options.'

Option D aligns with this guidance. Reference: FastConnect Overview - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/fastconnect.htm).