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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

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

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 (Q100-Q105):

NEW QUESTION # 100
A company has deployed a VCN in OCI with multiple subnets. Security requirements dictate that instances in different subnets within the same VCN should not be able to directly communicate with each other unless explicitly permitted. You are tasked with implementing this policy. What is the most appropriate approach to meet this requirement?

A. Create separate VCNs for each subnet.
B. Configure a stateful firewall in front of the VCN and configure the rules to deny inter-subnet traffic.
C. Configure network security groups (NSGs) for each subnet, defining strict ingress and egress rules that only allow the necessary traffic.
D. Remove the default route rule in the VCN's route table that allows traffic between subnets.

Answer: C

Explanation:
* Requirement:Restrict inter-subnet communication unless permitted.
* Options Analysis:
* A:Removing default route breaks all routing, overly restrictive; incorrect.
* B:Separate VCNs are excessive, complex; less practical.
* C:NSGs provide granular, explicit control; optimal approach.
* D:External firewall adds complexity, not VCN-native; inefficient.
* NSG Advantage:Instance-level rules enforce policy within VCN.
* Conclusion:NSGs are the most appropriate solution.
NSGs enable precise security within a VCN. The Oracle Networking Professional study guide states,
"Network Security Groups (NSGs) allow you to define strict ingress and egress rules for instances, ensuring inter-subnet communication is explicitly permitted as per security policies" (OCI Networking Documentation, Section: Network Security Groups). This is more efficient than VCN separation or external firewalls.

NEW QUESTION # 101
For a migration scenario where on-premises workloads need to access OCI Object Storage for large data transfers, and a dedicated, private connection is required, which OCI service best fulfills this need?

A. FastConnect Private Peering with a Service Gateway
B. Internet Gateway with public IP addressing
C. Service Gateway via Site-to-Site VPN
D. Dynamic Routing Gateway (DRG) with Internet Gateway

Answer: A

Explanation:
* Needs: Private, dedicated connection for large data transfers to Object Storage.
* Option A: VPN with Service Gateway uses public internet, limiting bandwidth-incorrect.
* Option B: Internet Gateway exposes traffic publicly-incorrect.
* Option C: FastConnect Private Peering provides a dedicated link, and Service Gateway ensures private Object Storage access-correct.
* Option D: DRG with Internet Gateway isn't private-incorrect.
* Conclusion: Option C best meets the need.
Oracle states:
* "FastConnect Private Peering combined with a Service Gateway enables secure, high-bandwidth access to Object Storage from on-premises networks."This supports Option C. Reference:FastConnect and Service Gateway - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/fastconnect.
htm#servicegateway).

NEW QUESTION # 102
You are using the OCI Application Load Balancer (ALB) for your web application. You want to implement a blue/green deployment strategy to minimize downtime during application updates. You have two backend sets: 'blue' (the current version) and 'green' (the new version). What is the most efficient way to switch traffic from the 'blue' backend set to the 'green' backend set using the ALB's traffic management capabilities?

A. Use the ALB's routing rules to gradually shift traffic from the 'blue' backend set to the 'green' backend set based on a percentage weight.
B. Update the health check policy of the 'blue' backend set to mark all servers as unhealthy, forcing the ALB to send traffic to the 'green' backend set.
C. Create a new listener that points to the 'green' backend set and delete the old listener.
D. Update the listener to point directly to the 'green' backend set.

Answer: A

Explanation:
* Goal:Minimize downtime in blue/green deployment with ALB.
* ALB Capabilities:Supports weighted routing for gradual traffic shifts.
* Evaluate Options:
* A:Immediate switch risks downtime if 'green' fails; less efficient.
* B:Listener swap causes abrupt change; not optimal.
* C:Gradual shift with weights ensures smooth transition; most efficient.
* D:Forcing 'blue' unhealthy is disruptive and hacky; inefficient.
* Conclusion:Weighted routing provides the smoothest transition.
ALB supports blue/green via routing rules. The Oracle Networking Professional study guide states,
"Application Load Balancer's routing rules allow weighted traffic distribution between backend sets, enabling blue/green deployments with minimal downtime" (OCI Networking Documentation,Section: Load Balancer Routing). This method ensures stability during updates.

NEW QUESTION # 103
Your company is migrating several applications to OCI and requires a highly available and resilient VPN connection between your on-premises network and OCI. You need to ensure that if one VPN tunnel fails, traffic automatically fails over to a backup tunnel with minimal disruption. Which configuration would BEST achieve high availability and automatic failover for your OCI Site-to-Site VPN connection?

A. Configure a single VPN connection with a single tunnel and rely on the underlying OCI infrastructure for automatic failover.
B. Configure a single VPN connection with two tunnels using the same CPE IP address.
C. Configure a single VPN connection with two tunnels, ensuring that both tunnels use different CPE IP addresses on the on-premises side.
D. Configure two separate VPN connections, each with a single tunnel, pointing to different CPE IP addresses on the on-premises side. Advertise the same prefixes over both VPN connections using BGP.

Answer: C

Explanation:
* Understand the Requirement: The goal is high availability (HA) and automatic failover for a Site-to- Site VPN between an on-premises network and OCI with minimal disruption.
* Evaluate Option A: A single VPN connection with one tunnel lacks redundancy. If the tunnel fails, there's no failover mechanism, as OCI doesn't inherently provide automatic failover for a single tunnel.
This is a single point of failure.
* Evaluate Option B: A single VPN connection with two tunnels using different CPE IP addresses leverages OCI's IPSec VPN capabilities. OCI supports multiple tunnels per VPN connection, and using distinct CPE IPs (e.g., via different ISPs or devices) ensures that if one tunnel fails (due to ISP or CPE failure), the second tunnel remains active. OCI's Dynamic Routing Gateway (DRG) automatically reroutes traffic to the active tunnel using IKE and IPSec health checks.
* Evaluate Option C: Two separate VPN connections, each with one tunnel and different CPE IPs, also provide HA. Using BGP, routes are advertised redundantly. However, managing two VPN connections is more complex than a single connection with two tunnels, and BGP failover might introduce slight delays compared to IPSec tunnel failover.
* Evaluate Option D: Two tunnels with the same CPE IP address within one VPN connection don't provide true HA. If the CPE or its ISP fails, both tunnels fail, as they share a single point of failure.
* Conclusion: Option B is the simplest, most resilient configuration that ensures automatic failover with minimal disruption using OCI's native VPN capabilities.
OCI's Site-to-Site VPN supports multiple tunnels within a single IPSec connection for redundancy.
According to the Oracle Help Center:
* "You can configure multiple tunnels for a single IPSec connection to provide redundancy. OCI uses IKE (Internet Key Exchange) to monitor tunnel health and automatically fails over to an active tunnel if one becomes unavailable."
* "For maximum availability, use different CPE public IP addresses for each tunnel (e.g., different ISPs or devices)."This aligns with Option B, ensuring HA without the complexity of separate VPN connections or BGP. Reference:Site-to-Site VPN Overview - Oracle Help Center(docs.oracle.com/en-us
/iaas/Content/Network/Tasks/settingupIPSec.htm).

NEW QUESTION # 104
Your company has deployed a mission-critical application on OCI that requires consistent, predictable network performance. You have established a FastConnect circuit to connect your on-premises data center to OCI. You observe that the network latency varies throughout the day, and you suspect that other traffic is impacting the performance of your application. Which FastConnectfeature can you leverage to prioritize traffic for your mission-critical application and improve its network performance?

A. FastConnect VLAN Tagging
B. FastConnect Quality of Service (QoS)
C. FastConnect BGP Communities
D. FastConnect Jumbo Frames

Answer: B

Explanation:
* Goal:Prioritize application traffic over FastConnect for consistent performance.
* Features:
* VLAN Tagging:Segments traffic, no prioritization.
* QoS:Prioritizes traffic based on rules.
* BGP Communities:Route policy, not QoS.
* Jumbo Frames:Increases MTU, not priority.
* Evaluate Options:
* A:No prioritization; incorrect.
* B:QoS ensures priority; correct.
* C:Routing control, not QoS; incorrect.
* D:Throughput, not latency control; incorrect.
* Conclusion:QoS is the right feature.
FastConnect QoS manages traffic priority. The Oracle Networking Professional study guide explains,
"FastConnect Quality of Service (QoS) allows you to prioritize critical traffic over the circuit, ensuring consistent performance despite competing traffic" (OCI Networking Documentation, Section: FastConnect Features). This addresses latency variability effectively.

NEW QUESTION # 105
......

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