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Oracle 1z0-1124-25 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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 4

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 5

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 6

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 7

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.

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Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q21-Q26):

NEW QUESTION # 21
Your company has a FastConnect circuit established between your on-premises data center and OCI.
However, you have a specific regulatory requirement to encrypt all traffic, even over dedicated connections like FastConnect. You need to implement IPSec encryption without significantly impacting the available bandwidth of your FastConnect circuit. Which is the most effective approach to implement IPSec encryption over your existing FastConnect circuit, while maintaining high bandwidth?

A. Terminate IPSec VPN on compute instances in a public subnet on the OCI side.
B. Establish a second, separate Site-to-Site VPN connection to OCI over the public internet, and route all sensitive traffic over this VPN, while routing non-sensitive traffic over the FastConnect circuit.
C. Configure a Site-to-Site VPN using the OCI Dynamic Routing Gateway (DRG) over theFastConnect virtual circuit. Use a low-overhead encryption algorithm like AES-GCM.
D. Deploy virtual firewall appliances within OCI and your on-premises network and configure IPSec tunnels between them, routing all traffic through the firewalls. Use a high-security encryption algorithm like AES-256.

Answer: C

Explanation:
* Requirements:Encrypt FastConnect traffic with minimal bandwidth impact.
* IPSec Options:
* DRG VPN:Native OCI solution over FastConnect.
* Firewall Appliances:Adds overhead and complexity.
* Compute Instances:Resource-intensive, not scalable.
* Internet VPN:Uses public internet, against requirements.
* Evaluate Options:
* A:DRG VPN with AES-GCM (low-overhead encryption) leverages FastConnect; optimal.
* B:Firewalls with AES-256 add overhead, reducing bandwidth; less effective.
* C:Compute-based VPN is inefficient and public-facing; unsuitable.
* D:Public internet VPN violates privacy requirement; incorrect.
* Conclusion:DRG VPN with AES-GCM is the most effective solution.
OCI supports IPSec over FastConnect via DRG. The Oracle Networking Professional study guide explains,
"A Site-to-Site VPN over FastConnect using the DRG provides encrypted traffic with low-overhead algorithms like AES-GCM, maintaining high bandwidth" (OCI Networking Documentation, Section:
FastConnect with VPN). This meets regulatory and performance needs efficiently.

NEW QUESTION # 22
You are designing a hybrid cloud environment where multiple VCNs in OCI need to communicate with your on-premises network. You are using a single Dynamic Routing Gateway (DRG) to connect to your on- premises network via FastConnect. You want to ensure that each VCN is isolated from the others and that traffic between VCNs must pass through your on-premises security appliances for inspection. How should you configure the DRG attachments and route tables to enforce this security policy?

A. Attach all VCNs and the FastConnect to the DRG. Configure static routes on each VCN's route table pointing to the DRG for any subnet not within the VCN. Enable the "Transit Routing" feature on the DRG to allow inter-VCN communication.
B. Attach all VCNs and the FastConnect to the DRG. Configure the DRG route table associated with each VCN attachment to route all traffic destined for other VCNs to the FastConnect attachment. Configure the FastConnect DRG route table to route traffic destined to each VCN to the corresponding VCN attachment.
C. Attach each VCN to the DRG using a Local Peering Gateway (LPG) and then attach one VCN to FastConnect. Configure routes so that traffic traverses from LPG to LPG through the on-premises network.
D. Attach each VCN directly to the FastConnect using IPSec VPN tunnels, bypassing the DRG entirely to ensure all traffic flows through the on-premises security appliances.

Answer: B

Explanation:
* Requirements:VCN isolation, inter-VCN traffic via on-premises appliances.
* DRG Role:Central hub for VCN and FastConnect connectivity.
* Evaluate Options:
* A:DRG routes inter-VCN traffic via FastConnect to on-premises; meets isolation and inspection needs.
* B:Transit Routing allows direct VCN-to-VCN communication, bypassing on-premises; incorrect.
* C:Bypassing DRG with VPNs is complex and unsupported; incorrect.
* D:LPG is for intra-region peering, not DRG-to-FastConnect; incorrect.
* Conclusion:Option A enforces the policy via DRG route tables.
DRG route tables control traffic flow. The Oracle Networking Professional study guide states, "To force inter- VCN traffic through an on-premises network via FastConnect, configure DRG route tables to route VCN- destined traffic to the FastConnect attachment, ensuring isolation and inspection" (OCI Networking Documentation, Section: DRG Routing). This setup leverages a single DRG effectively.

NEW QUESTION # 23
You are designing a highly available web application in OCI. You've created a VCN with two public subnets across different Availability Domains (ADs). You need to enable IPv6 support for the application to cater to a growing number of IPv6-only clients. You plan to use a Load Balancer to distribute traffic to backend compute instances in the public subnets. Which of the following approaches ensures the highest level of resilience and IPv6 connectivity for your application?

A. Configure the VCN with a public IPv6 CIDR block obtained from Oracle. Configure the Load Balancer to listen on IPv4 only, while backend compute instances listen on both IPv4 and IPv6, relying on NAT for IPv6 clients.
B. Configure the VCN with a public IPv6 CIDR block obtained from Oracle. Configure the Load Balancer to listen on both IPv4 and IPv6 addresses. Ensure the backend compute instances also listen on both IPv4 and IPv6 addresses.
C. Configure the VCN with a /48 IPv6 ULA prefix. Configure the Load Balancer to listen on both IPv4 and IPv6 addresses. Ensure the backend compute instances also listen on both IPv4 and IPv6 addresses.
Route traffic accordingly using NSGs.
D. Configure the VCN with a /48 IPv6 ULA prefix. Configure the Load Balancer to listen on IPv4 only, and the compute instances to listen on both IPv4 and IPv6, relying on NAT for IPv6 clients.

Answer: B

Explanation:
* 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).

NEW QUESTION # 24
Your company needs to establish a secure connection between your on-premises network and OCI for a pilot project. The project has a limited budget and requires a quick setup, but also demands that the connection is encrypted. The long-term plan involves migrating to FastConnect, but that will take several months. Which OCI VPN solution would be most suitable for this short-term, budget-conscious, and security-aware scenario?

A. Use a Dynamic Routing Gateway (DRG) with a Site-to-Site VPN connection configured using dynamic routing with BGP.
B. Use a Service Gateway to connect to a third-party VPN service available on the internet.
C. Use a Dynamic Routing Gateway (DRG) with a Site-to-Site VPN connection configured using static routing.
D. Deploy a third-party virtual appliance VPN solution from the OCI Marketplace within a public subnet and configure a VPN connection to your on-premises network.

Answer: C

Explanation:
* Requirements:Quick, cheap, encrypted VPN; interim before FastConnect.
* VPN Options:
* Static VPN:Simple, native, low cost.
* Third-Party Appliance:Complex, costly.
* Service Gateway:Not for VPN; incorrect.
* BGP VPN:Dynamic, more setup; less quick.
* Evaluate Options:
* A:Static VPN is fast, secure, budget-friendly; correct.
* B:Appliance adds cost and complexity; incorrect.
* C:Misaligned use of Service Gateway; incorrect.
* D:BGP is overkill for pilot; less efficient.
* Conclusion:Static VPN via DRG is most suitable.
Static VPN is ideal for quick setups. The Oracle Networking Professional study guide notes, "A Site-to-Site VPN with static routing via DRG provides a fast, encrypted connection for short-term needs, minimizing cost and setup time" (OCI Networking Documentation, Section: Site-to-Site VPN). This fits the pilot project perfectly.

NEW QUESTION # 25
You have configured an IPSec VPN tunnel over your FastConnect circuit to OCI. You are experiencing intermittent connectivity issues and notice that the VPN tunnel is flapping (frequently going up and down).
You have verified the IKE and IPSec configuration and confirmed that the security policies are correct.
Which is a LESS likely cause of the VPN tunnel flapping when using IPSec over FastConnect, compared to using IPSec over the public internet?

A. Issues with network congestion or packet loss.
B. MTU (Maximum Transmission Unit) misconfiguration leading to fragmentation.
C. BGP route flapping or instability.
D. Mismatched pre-shared keys or incorrect IKE/IPSec parameters.

Answer: A

Explanation:
* Context: Tunnel flapping over FastConnect vs. public internet.
* Option A: Congestion/packet loss is less likely over FastConnect's dedicated link than the unpredictable public internet-correct.
* Option B: Mismatched keys/parameters would prevent tunnel establishment, not flapping-equally likely in both.
* Option C: MTU issues cause fragmentation in both scenarios-equally likely.
* Option D: BGP flapping is more relevant with FastConnect's dynamic routing-more likely here.
* Conclusion: Option A is less likely over FastConnect.
Oracle notes:
* "FastConnect provides a stable, dedicated connection, reducing congestion and packet loss compared to public internet VPNs."This supports Option A. Reference:IPSec over FastConnect - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.htm#fastconnect).

NEW QUESTION # 26
......

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