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Official 1z0-1124-25 Study Guide & 1z0-1124-25 Lead2pass

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Oracle 1z0-1124-25 Exam Syllabus Topics:

Topic
Details

Topic 1

Design and Deploy OCI Virtual Cloud Networks (VCN): This section of the exam measures the skills of a Cloud Network Engineer and covers the design and configuration of Virtual Cloud Networks in Oracle Cloud Infrastructure. It includes understanding VCN and subnet characteristics, implementing both IPv4 and IPv6 addressing, identifying the distinct roles of OCI gateways, and recognizing endpoint types and their application within networking architectures. Knowledge of Object Storage endpoints is also referenced.

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

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 4

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 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

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.

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Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q73-Q78):

NEW QUESTION # 73
You are designing a highly available web application on OCI. The application needs to be accessible globally with traffic being routed to the nearest region based on user location. Additionally, you need to implement sophisticated traffic management policies, such as A/B testing and weighted traffic distribution based on application version. You also require protection against DDoS attacks. Which OCI load balancing solution is best suited for these requirements?

A. Network Load Balancer
B. Global Load Balancer with Traffic Management Steering Policies
C. Regional Load Balancer
D. Flexible Load Balancer

Answer: B

Explanation:
* Requirements:Global access, geo-routing, advanced traffic management, DDoS protection.
* Load Balancer Options:
* Regional LB:Single-region, no global routing or advanced policies.
* NLB:Layer 4, no HTTP-based traffic management or DDoS features.
* Global LB with Steering Policies:Layer 7, supports geo-routing and policies.
* Flexible LB:Not a specific OCI service.
* Assess Fit:
* A:Lacks global and advanced features; unsuitable.
* B:No Layer 7 or DDoS protection; incorrect.
* C:Meets all requirements with geo-routing, steering policies, and WAF integration; best fit.
* D:Non-existent service; incorrect.
* Conclusion:Global LB with steering policies is the best solution.
The Global Load Balancer with Traffic Management Steering Policies supports global applications. The Oracle Networking Professional study guide explains, "Global Load Balancer enables geo-based routing and advanced traffic policies like A/B testing and weighted distribution, integrating with OCI WAF for DDoS protection" (OCI Networking Documentation, Section: Load Balancing - Traffic Management). This aligns with all specified requirements.

NEW QUESTION # 74
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. Adjust the IKE (Internet Key Exchange) and IPSec parameters, such as rekeying intervals and encryption algorithms, to optimize performance.
B. 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.
C. Implement Quality of Service (QoS) on both the OCI and AWS VPN gateways to prioritize VPN traffic.
D. Increase the MTU (Maximum Transmission Unit) size on the VPN tunnel interfaces to reduce fragmentation.

Answer: D

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 # 75
A company wants to leverage a best-of-breed approach for their application stack. They plan to use OCI for its Autonomous Database, Azure for its container orchestration (AKS), and AWS for its object storage (S3).
Considering cost optimization and minimizing data egress charges, which strategy is the MOST efficient for transferring large datasets between these services?

A. Using Storage Gateway service on each cloud and replicate data from one gateway to the other
B. Establishing a hub-and-spoke model, using a central cloud provider as the data transfer hub, incurring egress charges from each cloud to the hub and then ingress charges from the hub to the destination cloud
C. Moving data directly between OCI Autonomous Database, Azure AKS, and AWS S3 using public internet, as this is the most cost-effective option
D. Utilizing a third-party data integration platform that is strategically located at a network peering point between OCI, Azure, and AWS

Answer: D

Explanation:
* Goal: Efficient, cost-optimized data transfer minimizing egress charges.
* Option A: Public internet incurs high egress costs-incorrect.
* Option B: Hub-and-spoke doubles egress/ingress charges-less efficient.
* Option C: Third-party platform at peering points reduces egress by leveraging direct connections- correct.
* Option D: Storage Gateway is for hybrid, not multicloud efficiency-incorrect.
* Conclusion: Option C is the most efficient strategy.
Oracle states:
* "A third-party integration platform at peering points minimizes egress charges by using direct interconnects for multicloud data transfers."This validates Option C. Reference:Multicloud Cost Optimization - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/multicloud.
htm#costoptimization).

NEW QUESTION # 76
When migrating workloads from another cloud provider to OCI, what is a key consideration when choosing a connectivity strategy to ensure optimal network performance?

A. Factoring in the bandwidth requirements of the applications being migrated and choosing a connection that can accommodate peak traffic loads
B. Ignoring the geographical proximity of the cloud regions being interconnected
C. Only considering managed connectivity solutions to avoid the complexity of configuring VPNs or direct interconnects
D. Prioritizing the lowest possible initial setup cost, even if it results in higher ongoing operational expenses

Answer: A

Explanation:
* Goal: Ensure optimal performance in connectivity strategy.
* Option A: Low setup cost may compromise performance-incorrect.
* Option B: Proximity affects latency; ignoring it harms performance-incorrect.
* Option C: Matching bandwidth to app needs ensures performance-correct.
* Option D: Limiting to managed solutions restricts options-incorrect.
* Conclusion: Option C is the key consideration.
Oracle advises:
* "Consider application bandwidth requirements and peak loads when selecting a connectivity strategy for optimal performance during migration."This supports Option C. Reference:Network Planning for Migration - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/migration.
htm#planning).

NEW QUESTION # 77
You are configuring a VCN with multiple subnets for a customer. The security team requires that all instances have IPv6 addresses. You configure the VCN with an IPv6 ULA CIDR block of fc00:1:1::/48 and create two private subnets. After launching instances in the two private subnets, you notice that they only have IPv4 addresses assigned. You have not manually configured any IPv6 addresses on the instances themselves. What steps are necessary to ensure the instances automatically receive IPv6 addresses?

A. IPv6 address assignment is only supported on instances launched in public subnets.
B. No further steps are needed. Instances will automatically receive IPv6 addresses within the configured subnets upon launch.
C. Ensure that SLAAC (Stateless Address Autoconfiguration) is enabled on the operating system of the instances within the two subnets.
D. Make sure the "Assign public IPv4 address" option is not selected during instance creation. This will force the instance to default to IPv6 allocation.

Answer: C

Explanation:
* Problem:Instances lack IPv6 addresses despite VCN IPv6 configuration.
* OCI IPv6 Behavior:IPv6 requires subnet enablement and OS support via SLAAC.
* Evaluate Options:
* A:Incorrect. OCI doesn't auto-assign IPv6 without OS configuration.
* B:Correct. SLAAC must be enabled on the instance OS for auto-assignment.
* C:Incorrect. IPv6 works in both public and private subnets.
* D:Incorrect. IPv4 and IPv6 assignments are independent.
* Conclusion:Enabling SLAAC on the OS ensures automatic IPv6 assignment.
IPv6 in OCI relies on SLAAC for automatic address assignment. The Oracle Networking Professional study guide states, "To enable IPv6 on instances, the VCN and subnet must have IPv6 CIDR blocks, and the instance OS must support SLAAC to automatically configure IPv6 addresses" (OCI Networking Documentation, Section: IPv6 Configuration). Without SLAAC, instances default to IPv4 only.

NEW QUESTION # 78
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