Free Oracle Cloud Infrastructure 2025 Networking Professional 1Z0-1124-25 Exam Questions

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.

Objective: Enable transitive routing via a network appliance (e.g., firewall) between VCNs.

Transitive Routing Setup: DRG connects VCNs; appliance processes traffic.

Key Requirement: DRG must route traffic to the appliance's private IP.

Evaluate Options:

A: Service Gateway is for OCI services, not transitive routing; incorrect.

B: Static routes on DRG to appliance ensure correct traffic flow; essential.

C: Load Balancer is optional, not essential for routing; incorrect.

D: LPG is for intra-region VCN peering, not appliance-DRG connection; incorrect.

Conclusion: DRG static routes to the appliance are critical for transitive routing.

Transitive routing with a network appliance requires explicit routing configuration. The Oracle Networking Professional study guide notes, 'To enable transitive routing through a network appliance, configure static routes in the DRG route table pointing to the appliance's private IP as the next hop' (OCI Networking Documentation, Section: Transitive Routing with DRG). This ensures traffic is processed by the appliance between VCNs.

Objective: Identify the OCI resource for private, low-latency VCN-to-VCN connectivity in the same region.

Option A: DRG connects VCNs to external networks (e.g., on-premises) or across regions, not for same-region peering---incorrect.

Option B: LPG is designed for private peering of VCNs within the same region, ensuring low-latency communication---correct.

Option C: Internet Gateway provides public internet access, not private connectivity---incorrect.

Option D: Service Gateway connects VCNs to OCI services, not other VCNs---incorrect.

Conclusion: Option B is the appropriate resource.

Oracle documentation states:

'A Local Peering Gateway (LPG) enables private connectivity between two VCNs in the same region, providing direct, low-latency communication.'

This confirms Option B. Reference: Local VCN Peering Overview - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/localVCNpeering.htm).

Objective: Identify the service for Load Balancer traffic logs.

Option A: Flow Logs capture VCN traffic, not specific to Load Balancer---incorrect.

Option B: Service Logs are generic, not Load Balancer-specific---incorrect.

Option C: Load Balancer Logs provide detailed client and health check data---correct.

Option D: Audit Logs track API actions, not traffic---incorrect.

Conclusion: Load Balancer Logs are the best fit.

Oracle states:

'Load Balancer Logs offer detailed insights into client connections and backend health checks for Network Load Balancers.''

This validates Option C. Reference: Load Balancer Logging - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Balance/Tasks/managinglogs.htm).

Requirements: HA and IPv6 support for public web app.

Option A: ULA is private, not routable; NAT for IPv6 is inefficient---incorrect.

Option B: ULA doesn't support public IPv6 clients---incorrect.

Option C: Public IPv6 CIDR is correct, but IPv4-only LB with NAT lacks direct IPv6---less resilient.

Option D: Public IPv6 CIDR with dual-stack LB and instances ensures full IPv6 support and HA across ADs---correct.

Conclusion: Option D maximizes resilience and connectivity.

Oracle states:

'For public IPv6 applications, use a public IPv6 CIDR block and configure Load Balancers and instances for both IPv4 and IPv6 to ensure resilience.'

This supports Option D. Reference: IPv6 in OCI - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingIPv6.htm).

Objective: Identify the true statement about KSK rotation in OCI DNS.

Option A: OCI DNS automates much of the process but requires user initiation, not fully automated---incorrect.

Option B: OCI DNS generates keys internally; manual generation and upload aren't required---incorrect.

Option C: OCI DNS offers a ''KSK Rollover'' feature that, once enabled, automates the rotation process, ensuring minimal disruption---correct.

Option D: KSK rotation is supported via the rollover feature---incorrect.

Conclusion: Option C accurately describes OCI DNS KSK rotation.

Oracle documentation confirms:

'OCI DNS supports KSK rotation through the KSK Rollover feature. Enable it to automatically rotate keys while maintaining DNS resolution continuity.'

This validates Option C. Reference: DNSSEC in OCI DNS - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/DNS/Tasks/managingdnssec.htm).

Requirements: High throughput, low latency, TCP, persistence, private endpoints.

Load Balancer Options:

ALB: Layer 7, higher overhead, HTTP-focused.

NLB: Layer 4, low overhead, TCP/UDP optimized.

Global LB: Global routing, not regional focus.

Evaluate Options:

A: ALB with IP Hash has overhead; less optimal.

B: NLB with 5-Tuple Hash offers low latency, persistence, private support; best fit.

C: Global LB with cookies is HTTP-based; incorrect.

D: HTTP focus is irrelevant for raw TCP; incorrect.

Conclusion: NLB with 5-Tuple Hash meets all criteria.

NLB is ideal for high-performance TCP. The Oracle Networking Professional study guide states, 'Network Load Balancer provides low-latency, high-throughput TCP load balancing with 5-Tuple Hash persistence, supporting private endpoints for secure, high-volume applications' (OCI Networking Documentation, Section: Network Load Balancer). This aligns with financial app needs.

Objective: Identify the feature for dynamic route learning via DRG.

Option A: Service Gateway is for OCI services---incorrect.

Option B: LPG is for VCN peering---incorrect.

Option C: BGP enables dynamic route exchange between DRG and on-premises---correct.

Option D: Internet Gateway is for public access---incorrect.

Conclusion: Option C is the correct feature.

Oracle notes:

'BGP on the DRG dynamically learns routes from on-premises networks over FastConnect or VPN, propagating them to VCNs.'

This confirms Option C. Reference: BGP with DRG - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingDRGs.htm#BGP).

Goal: Secure, granular access control to ADB from private subnet instances.

Option A: Public endpoint with NSGs exposes ADB to the internet, increasing risk despite NSG restrictions---less secure than private options.

Option B: Service Gateway provides private access to OCI services, but it's not specific to ADB instances and lacks the instance-level granularity of private endpoints.

Option C: Private ADB endpoint assigns a private IP within the VCN, keeping traffic internal. NSGs allow precise, stateful control to specific instances, offering the most granular security.

Option D: DRG is for external connections (e.g., on-premises), not internal VCN-to-ADB access.

Conclusion: Option C provides the most secure and granular control.

Oracle documentation notes:

'Private endpoints for Autonomous Database provide a private IP within your VCN, ensuring traffic stays off the public internet. Use NSGs for fine-grained access control to specific instances.'

This supports Option C. Reference: Autonomous Database Networking - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Database/Tasks/adbconnecting.htm).

Requirements: Dedicated, high-bandwidth, low-latency, no Oracle FastConnect location, third-party provider.

FastConnect Models:

Direct Cross-Connect: Requires Oracle location; unsuitable.

Partner: Uses third-party network to Oracle; fits scenario.

Hosted: Third-party hosts, less common term; less precise.

Public Peering: Internet-based; doesn't meet dedicated need.

Evaluate Options:

A: Needs Oracle presence; incorrect.

B: Third-party to Oracle; correct.

C: Similar but less standard term; less optimal.

D: Public internet; incorrect.

Conclusion: FastConnect Partner is most suitable.

Partner model extends FastConnect reach. The Oracle Networking Professional study guide states, 'FastConnect Partner model leverages third-party providers to connect on-premises networks to OCI in regions without direct Oracle FastConnect locations' (OCI Networking Documentation, Section: FastConnect Models). This ensures dedicated connectivity.