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Oracle 1z0-1124-25 Exam Syllabus Topics:

Topic
Details

Topic 1

Troubleshoot OCI Networking and Connectivity Issues: This section of the exam measures the skills of a Cloud Operations Engineer and evaluates the ability to select appropriate OCI tools and services for troubleshooting network and connectivity problems. It also tests knowledge of using OCI logging services to diagnose and resolve configuration or performance issues effectively.

Topic 2

OCI Networking Best Practices: This section of the exam measures the skills of a Cloud Solutions Architect and covers essential best practices for designing secure, efficient, and scalable networking solutions in OCI. It includes architectural design, connectivity setup, security hardening, and monitoring and logging standards that align with industry and Oracle-recommended guidelines.

Topic 3

Plan and Design OCI Networking Solutions and App Services: This section of the exam measures the skills of a Solutions Architect and focuses on planning comprehensive networking and application service strategies. It includes understanding IP management practices, choosing procedural steps for deployments, and evaluating OCI load balancers, DNS configurations, and traffic steering options. Basic familiarity with DNS Security Extensions (DNSsec) is acknowledged as a placeholder for future integration.

Topic 4

Migrate Workloads to OCI: This section of the exam measures the skills of a Cloud Migration Specialist and focuses on identifying the best networking connectivity strategies when migrating workloads to Oracle Cloud. It includes scenarios involving on-premises infrastructure, other cloud providers, and multicloud environments, ensuring proper connectivity and minimal downtime during transitions.

Topic 5

Design for Hybrid Networking Architectures: This section of the exam measures the skills of a Network Infrastructure Architect and assesses capabilities in designing hybrid networking environments. It involves demonstrating proficiency with Dynamic Routing Gateway (DRG) configurations, attachments, BGP routing protocols, VPN services, and evaluating FastConnect offerings. This section also emphasizes maintaining reliable multicloud connectivity and implementing IPSec over FastConnect, along with transitive routing practices.

Topic 6

Implement and Operate Secure OCI Networking and Connectivity Solutions: This section of the exam measures the skills of a Cloud Security Specialist and centers around securing networking configurations and interconnectivity in OCI. It involves applying IAM policies for tenancy communication, using bastion services in multi-tier setups, exploring CloudShell capabilities, and evaluating network security layers like OCI Network Firewall, Web Application Firewall (WAF), edge services, and certificates. This section also references obsolete content related to IaC and OKE in networking architectures while touching on zero-trust packet routing models.

Topic 7

Transitive Routing: This section of the exam measures the skills of a Network Security Engineer and focuses on the interpretation and synthesis of transitive routing configurations. It includes understanding how DRG, Local Peering Gateways (LPG), and network appliances interact in a routed network and implementing those configurations effectively.

Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q65-Q70):

NEW QUESTION # 65
You are setting up a Site-to-Site VPN connection between your on-premises network and OCI. You have generated the IKE pre-shared key and configured the VPN connection in OCI. You now need to configure your on-premises Customer Premises Equipment (CPE). Which information from the OCI console is ESSENTIAL for configuring your on-premises CPE to establish the VPN connection?

A. The subnet CIDR blocks within your OCI VCN.
B. The public IP address of the OCI Dynamic Routing Gateway (DRG) and the IKE pre-shared key.
C. The OCID (Oracle Cloud Identifier) of the VPN connection and the compartment ID.
D. The OCI region and availability domain.

Answer: B

Explanation:
* Objective: Identify essential info for CPE to establish a Site-to-Site VPN with OCI.
* Option A: Region and availability domain are for OCI resource placement, not CPE config-incorrect.
* Option B: The DRG's public IP is the VPN endpoint, and the IKE pre-shared key authenticates the tunnel-essential and correct.
* Option C: OCID and compartment ID are for OCI management, not CPE setup-incorrect.
* Option D: Subnet CIDRs are for routing, configured later, not for tunnel establishment-incorrect.
* Conclusion: Option B provides the critical VPN connection details.
Oracle documentation states:
* "To configure your CPE for Site-to-Site VPN, you need the public IP address of the DRG (VPN headend) and the IKE pre-shared key from the OCI console."This confirms Option B. Reference:Setting Up IPSec VPN - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks
/settingupIPSec.htm).

NEW QUESTION # 66
A large financial institution is migrating its on-premises trading platform to OCI. The platform requires low latency and high bandwidth connectivity to the on-premises data center. You have established an Oracle Cloud Infrastructure FastConnect circuit. You now need to connect multiple VCNs in different regions to the on-premises data center via this FastConnect circuit, optimizing for cost and management overhead. Which DRG configuration would be the most efficient and recommended approach?

A. Create a separate DRG in each region and attach each VCN to its regional DRG. Then, create a separate FastConnect attachment to each regional DRG. Finally, configure static routes on each DRG to direct traffic appropriately.
B. Create a single DRG in one region and attach all VCNs in all regions to this single DRG using local peering gateways (LPGs). Attach the FastConnect circuit to this single DRG. Configure static routes on the DRG to direct traffic to the appropriate VCNs.
C. Create a single DRG in one region. Attach all VCNs in all regions to this single DRG using DRG attachments with remote peering. Attach the FastConnect circuit to the single DRG.
D. Create a single DRG in one region and attach all VCNs in all regions to this single DRG using remote peering connections. Attach the FastConnect circuit to this single DRG. Configure static routes on the DRG to direct traffic to the appropriate VCNs.

Answer: C

Explanation:
* Requirements:Low latency, high bandwidth, multi-region VCNs via one FastConnect, minimal cost
/overhead.
* DRG Strategy:
* Multiple DRGs:Increases cost and complexity.
* Single DRG:Centralizes management, reduces FastConnect attachments.
* Evaluate Options:
* A:Multiple DRGs and FastConnects; costly and complex; incorrect.
* B:Remote peering connections imply RPC, not standard DRG attachments; less precise.
* C:Single DRG with remote peering attachments; efficient and correct terminology; optimal.
* D:LPGs are intra-region, not cross-region; incorrect.
* Conclusion:Single DRG with remote peering attachments is most efficient.
A single DRG optimizes multi-region setups. The Oracle Networking Professional study guide notes, "For connecting multiple VCNs across regions to a single FastConnect, use one DRG with remote peering attachments to minimize cost and management overhead" (OCI Networking Documentation, Section: DRG with FastConnect). Option C aligns with OCI's recommended architecture.

NEW QUESTION # 67
You are responsible for managing the network infrastructure of a multi-tenant SaaS application deployed on OCI. Each tenant has their own dedicated VCN. To simplify management and provide a centralized point for connectivity to your on-premises network via FastConnect, you are using a DRG. However, you need to ensure that tenants are logically isolated from each other, and no traffic can flow directly between tenant VCNs through the DRG. How can you achieve tenant isolation while still allowing each tenant to connect to your on-premises network through the centralized DRG?

A. Create a separate DRG for each tenant and attach the respective tenant VCN to its DRG. Configure static routes on each DRG to direct traffic appropriately.
B. Utilize a single DRG and attach all tenant VCNs to it. For each VCN attachment, use a DRG route table that only contains a route to the FastConnect attachment. Do not include any routes to other VCN attachments in any DRG route table.
C. Utilize a single DRG and attach all tenant VCNs to it. Create a separate compartment for each tenant VCN. This will automatically isolate tenant traffic at the DRG level.
D. Utilize a single DRG and attach all tenant VCNs to it. Implement Network Security Groups (NSGs) on each tenant VCN to explicitly block all traffic to and from other tenant VCNs.

Answer: B

Explanation:
* Requirements: Centralized DRG with tenant isolation.
* Option A: Separate DRGs complicate management-incorrect.
* Option B: NSGs work but are less secure than routing isolation-less optimal.
* Option C: Single DRG with per-VCN route tables restricting routes to FastConnect only ensures isolation at the routing level-correct.
* Option D: Compartments don't isolate traffic at DRG-incorrect.
* Conclusion: Option C is the most effective.
Oracle states:
* "Use separate DRG route tables per VCN attachment to isolate traffic. Include only FastConnect routes to prevent VCN-to-VCN communication."This supports Option C. Reference:DRG Route Tables - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingDRGs.htm).

NEW QUESTION # 68
You are designing an OCI networking architecture for a multi-tier application using Infrastructure as Code (IaC). The architecture includes an OKE cluster for the front-end, a set of Compute instances for the back- end, and an Autonomous Database. You want to ensure that all traffic between these components is encrypted. You are using Transport Layer Security (TLS) for end-to-end encryption but are concerned about the overhead of encrypting all traffic within the VCN. Which approach provides the MOST balanced approach to security and performance, minimizing the overhead of encryption while still protecting sensitive data?

A. Implement TLS encryption for traffic between the OKE cluster and the Compute instances and use Oracle Database Vault to encrypt data at rest and in transit for the Autonomous Database.
B. Implement mutual TLS (mTLS) for all traffic between the OKE cluster, the Compute instances, and the Autonomous Database.
C. Use Network Security Groups (NSGs) and Security Lists to control access between components but do not implement any additional encryption within the VCN.
D. Implement TLS encryption only between the OKE cluster and the load balancer. Rely on the inherent security of the OCI network for traffic within the VCN.

Answer: A

Explanation:
* Goal: Balance security and performance with encryption in a VCN.
* Option A: TLS only to the load balancer leaves internal traffic unencrypted, risking exposure- insufficient security.
* Option B: mTLS everywhere maximizes security but adds significant overhead (e.g., certificate management), impacting performance-overkill.
* Option C: NSGs/Security Lists control access but don't encrypt traffic-lacks protection for sensitive data.
* Option D: TLS between OKE and Compute secures app-tier communication. Oracle Database Vault ensures ADB traffic is encrypted efficiently, leveraging built-in features-balanced approach.
* Conclusion: Option D optimizes security and performance.
Oracle states:
* "Use TLS for application traffic between tiers. Autonomous Database with Database Vaultprovides encryption in transit and at rest, minimizing overhead."This supports Option D. Reference:Security in OCI Networking - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts
/securityoverview.htm).

NEW QUESTION # 69
Your company is utilizing a multi-cloud architecture with applications running on both OCI and AWS. You have established a Site-to-Site VPN connection between OCI and AWS for secure communication. Over time, you observe that the VPN tunnel becomes unstable and frequently disconnects, particularly during peak hours.
You suspect this is due to increased network latency and packet loss. Which action is least likely to improve the stability and reliability of your OCI-AWS Site-to-Site VPN connection in this scenario?

A. Increase the MTU (Maximum Transmission Unit) size on the VPN tunnel interfaces to reduce fragmentation.
B. Adjust the IKE (Internet Key Exchange) and IPSec parameters, such as rekeying intervals and encryption algorithms, to optimize performance.
C. Transition from a Site-to-Site VPN to a dedicated interconnect solution (e.g., FastConnect with a partner to AWS) for higher bandwidth and lower latency.
D. Implement Quality of Service (QoS) on both the OCI and AWS VPN gateways to prioritize VPN traffic.

Answer: A

Explanation:
* Problem:VPN instability during peak hours due to latency and packet loss.
* Evaluate Actions:
* A:Optimizing IKE/IPSec reduces overhead; improves stability.
* B:QoS prioritizes VPN traffic; enhances reliability.
* C:Increasing MTU may worsen fragmentation if path MTU isn't matched; least effective.
* D:Dedicated interconnect eliminates internet issues; most effective.
* MTU Insight:Raising MTU without path MTU discovery risks more fragmentation, not less.
* Conclusion:Increasing MTU is least likely to help.
VPN stability requires addressing network conditions. The Oracle Networking Professional study guide notes,
"Adjusting IKE/IPSec parameters or using QoS can stabilize VPN tunnels, while increasing MTU without path MTU alignment may exacerbate fragmentation" (OCI Networking Documentation, Section: VPN Troubleshooting). Dedicated interconnects are ideal, but MTU adjustment is risky here.

NEW QUESTION # 70
......

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