PASS GUARANTEED ORACLE - EFFICIENT 1Z0-1124-25 - REAL ORACLE CLOUD INFRASTRUCTURE 2025 NETWORKING PROFESSIONAL QUESTION

Pass Guaranteed Oracle - Efficient 1z0-1124-25 - Real Oracle Cloud Infrastructure 2025 Networking Professional Question

Pass Guaranteed Oracle - Efficient 1z0-1124-25 - Real Oracle Cloud Infrastructure 2025 Networking Professional Question

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Oracle 1z0-1124-25 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 2
  • 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 3
  • 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 4
  • 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 5
  • 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.
Topic 6
  • 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 7
  • 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.

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Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q14-Q19):

NEW QUESTION # 14
When configuring transitive routing through a network appliance in a hub-and-spoke VCN topology, which configuration is necessary to ensure that traffic from a spoke VCN to another spoke VCN passes through the network appliance?

  • A. Attaching the network appliance to a Service Gateway.
  • B. Using an Internet Gateway to route traffic between the spoke VCNs.
  • C. Implementing a Local Peering Gateway (LPG) between the spoke VCNs.
  • D. Configuring static routes on the DRG route table pointing to the network appliance's private IP address.

Answer: D

Explanation:
* Goal: Force spoke-to-spoke traffic via a network appliance in hub-and-spoke topology.
* Option A: Static routes on DRG to appliance ensure transitive routing-correct.
* Option B: Service Gateway is for OCI services-incorrect.
* Option C: Internet Gateway is public, not hub-and-spoke-incorrect.
* Option D: LPG bypasses the appliance-incorrect.
* Conclusion: Option A is necessary.
Oracle notes:
* "In a hub-and-spoke topology, configure DRG route tables with static routes to the network appliance's private IP for transitive routing between spokes."This supports Option A. Reference:Hub-and-Spoke Topology - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/hubspoke.htm).


NEW QUESTION # 15
You are using Terraform to deploy a multi-tier application architecture consisting of a public subnet hosting a load balancer, a private subnet hosting application servers, and another private subnet hosting a database. The Terraform code successfully creates all the required infrastructure, including route tables and security lists.
However, after deployment, you realize that the load balancer cannot reach the application servers in the private subnet. You have verified that the load balancer is healthy and the application servers are running.
What is the most likely cause of this connectivity problem?

  • A. The load balancer's security list is not configured to allow egress traffic to the application server subnet on the required ports (e.g., port 8080).
  • B. The Network Address Translation (NAT) Gateway is misconfigured, preventing the application servers from initiating connections back to the load balancer.
  • C. The security list associated with the application server subnet does not allow ingress traffic from the load balancer's IP address range.
  • D. The route table associated with the application server subnet has a default route pointing to the Internet Gateway, which is incorrect for a private subnet.

Answer: C

Explanation:
* Problem Scope:Load balancer (public subnet) cannot reach application servers (private subnet).
* Connectivity Flow:Load balancer initiates traffic to application servers; application servers respond.
Key checkpoints: routing and security rules.
* Analyze Routing:Private subnets typically don't route to an Internet Gateway by default; they use NAT or Service Gateways. Misrouting (Option B) would affect outbound traffic, not inbound from the load balancer.
* Security Rules:
* Ingress (App Servers):Must allow traffic from the load balancer's IP range.
* Egress (Load Balancer):Must allow traffic to the application servers.
* Evaluate Options:
* A:Missing ingress rule on application servers' security list blocks load balancer traffic; most likely.
* B:Incorrect default route affects outbound, not inbound; less likely.
* C:NAT misconfiguration impacts outbound, not inbound; incorrect.
* D:Load balancer egress is necessary but secondary to application server ingress.
* Conclusion:Ingress rule absence on the application server subnet is the primary blocker.
Security lists control traffic at the subnet level in OCI. The Oracle Networking Professional study guide explains, "For a load balancer in a public subnet to communicate with instances in a private subnet, the private subnet's security list must include an ingress rule allowing traffic from the load balancer's IP range" (OCI Networking Documentation, Section: Security Lists). Since Terraform deployed the infrastructure, a misconfigured security list is a common oversight.


NEW QUESTION # 16
You are designing a multi-tier application within an OCI Virtual Cloud Network (VCN). The application comprises a public-facing web tier in one subnet, an application tier in another, and a database tier in a third.
For security reasons, you want to ensure that only the application tier can initiate connections to the database tier. The web tier needs to be able to communicate with the application tier, but not directly with the database tier. You are using private IP addresses within your VCN. Which procedural step is MOST effective to achieve this network isolation?

  • A. Create a single Network Security Group (NSG) and associate it with all three subnets. Configure ingress and egress rules within the single NSG to restrict traffic accordingly.
  • B. Create separate security lists for each subnet and configure ingress and egress rules to restrict traffic accordingly. Configure the route table for the Web Tier subnet to route traffic destined for the Database Tier subnet through the Application Tier.
  • C. Create separate Network Security Groups (NSGs) for each tier and configure ingress and egress rules to restrict traffic accordingly. Configure the route table for the Web Tier subnet to route traffic destined for the Database Tier subnet through the Application Tier.
  • D. Create separate security lists for each subnet and configure ingress and egress rules to restrict traffic accordingly. Create appropriate route rules in each subnet's route table.

Answer: D

Explanation:
* Requirements: App tier only initiates to DB; web tier to app tier only.
* Option A: NSGs with forced routing through app tier adds complexity and latency-less effective.
* Option B: Single NSG lacks subnet-level isolation-incorrect.
* Option C: Separate security lists per subnet with ingress/egress rules enforce isolation; route tables ensure proper VCN routing-correct and effective.
* Option D: Security lists are good, but routing web-to-DB via app tier is unnecessary-incorrect.
* Conclusion: Option C achieves isolation efficiently.
Oracle states:
* "Use separate security lists per subnet with ingress/egress rules to isolate tiers. Route tables manage intra-VCN traffic without forced hops."This supports Option C. Reference:Security Lists Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/securitylists.htm).


NEW QUESTION # 17
Which OCI feature allows the DRG to dynamically learn routes from on-premises networks, facilitating automated route propagation to connected VCNs?

  • A. Service Gateway
  • B. Border Gateway Protocol (BGP)
  • C. Internet Gateway
  • D. Local Peering Gateway (LPG)

Answer: B

Explanation:
* 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).


NEW QUESTION # 18
In a multi-tier architecture with multiple application instances across different private subnets, which Bastion service approach minimizes the need for continuous maintenance of individual session configurations?

  • A. Deploying separate Bastion hosts in each private subnet.
  • B. Creating individual Bastion sessions for each application instance.
  • C. Implementing a centralized Bastion service with managed sessions and predefined target resource configurations.
  • D. Using dynamic port forwarding with SOCKS5 sessions allowing users to define their own targets.

Answer: C

Explanation:
* 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.


NEW QUESTION # 19
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