Free Oracle 1Z0-1124-25 Exam Actual Questions & Explanations

Last updated on: Jul 31, 2026
Author: Hannah Ward (Oracle Cloud Infrastructure Certification Specialist)

The Oracle Cloud Infrastructure 2025 Networking Professional exam (1Z0-1124-25) validates your ability to design, deploy, and manage enterprise networking solutions on Oracle Cloud Infrastructure. This exam is intended for cloud architects, network engineers, and infrastructure professionals who work with OCI networking services. This resource guide helps you understand the exam scope, organize your study plan, and identify the key topics that matter most for passing with confidence.

1Z0-1124-25 Exam Syllabus & Core Topics

Use this topic map to guide your study for Oracle 1Z0-1124-25 (Oracle Cloud Infrastructure 2025 Networking Professional) within the Oracle Cloud and Oracle Cloud Infrastructure path.

  • Design and Deploy OCI Virtual Cloud Networks (VCN): Create and configure VCNs, subnets, and routing tables to support multi-tier application architectures. You must understand CIDR blocks, security lists, and network segmentation in production environments.
  • Plan and Design OCI Networking Solutions and App Services: Evaluate business requirements and translate them into OCI network designs. This includes selecting appropriate services, sizing capacity, and documenting design decisions for stakeholder review.
  • Design for Hybrid Networking Architectures: Connect on-premises infrastructure to OCI using site-to-site VPN, FastConnect, and other hybrid connectivity options. You must assess latency, bandwidth, and failover requirements for seamless integration.
  • Transitive Routing: Configure advanced routing scenarios where traffic flows through intermediate instances or appliances. Understand route table priorities, dynamic routing protocols, and how to troubleshoot routing loops.
  • Implement and Operate Secure OCI Networking and Connectivity Solutions: Apply security best practices including network segmentation, encryption, and access control. Configure firewalls, security lists, and network security groups to enforce least-privilege access.
  • Migrate Workloads to OCI: Plan and execute network migrations for existing applications and infrastructure. Address DNS cutover, traffic rerouting, and validation steps to ensure zero or minimal downtime.
  • Troubleshoot OCI Networking and Connectivity Issues: Diagnose and resolve common networking problems using OCI tools and logs. Interpret network performance metrics, identify misconfigurations, and apply corrective actions.

Question Formats & What They Test

The 1Z0-1124-25 exam measures both foundational knowledge and the ability to apply networking concepts to real-world scenarios. Questions progress in difficulty and require you to think through design trade-offs and operational decisions.

  • Multiple choice: Test recall of OCI networking features, service capabilities, and core terminology. Questions focus on definitions, default behaviors, and when to use specific services.
  • Scenario-based items: Present real-world situations where you must analyze requirements, evaluate options, and select the best design or troubleshooting approach. Examples include choosing between VPN and FastConnect, designing redundancy, or interpreting connectivity failures.
  • Configuration reasoning: Assess your understanding of how to configure VCNs, routing, security, and hybrid connections. You may need to identify misconfigurations or predict the outcome of a given setup.

Questions increase in complexity as you progress, rewarding candidates who combine theoretical knowledge with practical judgment.

Preparation Guidance

An efficient study plan maps each topic to a weekly goal, allowing you to build knowledge progressively and practice applying it to scenarios. Dedicate time to both conceptual understanding and hands-on configuration to reinforce learning.

  • Allocate one week per major topic area: VCN design, hybrid connectivity, security, and troubleshooting. Track completion and review weak areas before moving forward.
  • Work through practice question sets after each topic; read explanations carefully to understand why answers are correct and common misconceptions.
  • Connect related concepts across planning, design, and operations workflows. For example, understand how VCN design decisions affect security posture and hybrid connectivity options.
  • Complete a full-length timed practice test one week before your exam date. Use results to identify remaining gaps and refine your pacing strategy.
  • Review OCI documentation and architecture diagrams for complex topics like transitive routing and hybrid networking to solidify your mental models.

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Get the PDF & Practice Test

Strengthen your preparation with up-to-date resources from validexamdumps.com. These materials align to 1Z0-1124-25 and cover practical scenarios with clear explanations.

  • Q&A PDF with explanations: Topic-mapped questions that clarify why correct options are right and others aren't.
  • Practice Test: Realistic items, timed and untimed modes, progress tracking, and detailed review of every question.
  • Focused coverage: Aligned to VCN design, hybrid networking, security implementation, transitive routing, workload migration, and troubleshooting so you study what matters most.
  • Regular reviews: Content refreshes that reflect syllabus and product changes in Oracle Cloud Infrastructure.

Visit the exam page to download the PDF, Online Practice Test, or get a bundle discount for both formats: Oracle Cloud Infrastructure 2025 Networking Professional.

Frequently Asked Questions

What topics carry the most weight on the 1Z0-1124-25 exam?

VCN design, hybrid connectivity, and security implementation typically account for a significant portion of the exam. Transitive routing and troubleshooting also appear regularly. Focus your study time on these areas while ensuring you understand foundational concepts across all seven domains.

How do VCN design and hybrid networking connect in real projects?

VCN design establishes the foundation for your cloud infrastructure, while hybrid networking extends that design to include on-premises systems. In practice, you must design your VCN with hybrid connectivity in mind, considering IP address ranges, routing requirements, and security policies that span both environments. Understanding this relationship helps you make better architectural decisions.

How much hands-on experience do I need, and which labs should I prioritize?

Hands-on experience with OCI networking is valuable but not strictly required to pass the exam. Prioritize labs that cover VCN creation, security list configuration, route table setup, and hybrid connectivity using VPN or FastConnect. If possible, practice troubleshooting scenarios by intentionally misconfiguring resources and then diagnosing the issue.

What common mistakes lead to lost points on this exam?

Many candidates overlook the importance of security lists and network security groups, confusing their roles or misapplying them. Others struggle with transitive routing concepts or fail to consider failover and redundancy in design scenarios. Avoid rushing through scenario questions; read the requirements carefully and consider all constraints before selecting your answer.

What is the best strategy for the final week before the exam?

In your final week, take at least one full-length practice test under exam conditions to build pacing confidence. Review explanations for any incorrect answers and revisit weak topic areas using study notes or documentation. Avoid cramming new material; instead, reinforce what you have already learned and ensure you can apply it quickly under time pressure.

Get All 120 Questions
Question No. 1

You are tasked with setting up a secure connection from an OCI Compute instance running in a private subnet to a third-party API that is only accessible over the internet via a static public IP address. Your company policy prohibits exposing the compute instance directly to the internet. Which combination of VCN resources BEST facilitates this secure outbound connection to the third-party API?

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Correct Answer: B

Requirement: Secure outbound connection to a public API without exposing the instance.

Option A: Internet Gateway allows inbound and outbound traffic, exposing the instance---violates policy.

Option B: NAT Gateway enables outbound-only internet access from a private subnet. A security list restricts traffic to the API's IP, ensuring security---correct.

Option C: Service Gateway is for OCI services, not third-party APIs---incorrect.

Option D: DRG with FastConnect is for private connections (e.g., on-premises), not internet APIs---incorrect.

Conclusion: Option B meets the policy and connectivity needs.

Oracle notes:

'A NAT Gateway allows instances in a private subnet to initiate outbound internet traffic without receiving inbound connections. Use security lists to restrict destinations.'

This supports Option B. Reference: NAT Gateway Overview - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/NATgateway.htm).


Question No. 2

When configuring inter-tenancy VCN peering, what is the purpose of the "peer ID" provided by the requesting tenancy to the accepting tenancy?

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Correct Answer: B

Context: Inter-tenancy VCN peering connects VCNs across different OCI tenancies using Remote Peering Connections (RPCs).

Option A: Authentication of the root user is handled by IAM policies, not the peer ID, which is a technical identifier---incorrect.

Option B: The peer ID is the OCID of the RPC created by the requesting tenancy. It uniquely identifies the RPC, allowing the accepting tenancy to target and establish the peering---correct.

Option C: CIDR blocks are part of VCN configuration and shared separately, not via the peer ID---incorrect.

Option D: Security rules are defined by NSGs or security lists, not the peer ID---incorrect.

Conclusion: The peer ID's purpose is to identify the requesting tenancy's RPC, making Option B the correct answer.

From Oracle's documentation:

'For inter-tenancy peering, the requesting tenancy provides the OCID of its Remote Peering Connection (RPC), known as the peer ID, to the accepting tenancy. The accepting tenancy uses this ID to establish the peering.'

This confirms Option B. Reference: Remote VCN Peering Across Tenancies - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/remoteVCNpeering.htm#cross-tenancy).


Question No. 3

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?

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Correct Answer: C

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).


Question No. 4

When establishing cross-tenancy connectivity using Remote Peering Connections (RPCs), which IAM policy statement is essential to grant the requesting tenancy the ability to initiate the connection?

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Correct Answer: B

Objective: Grant requesting tenancy permission to initiate an RPC to the target tenancy.

RPC Process: Requires the requesting tenancy to create and connect the RPC, which needs specific IAM permissions in the target tenancy.

IAM Verbs:

manage: Broad permissions, too permissive for RPC initiation.

use: Allows creation and connection of RPCs, precise for this task.

inspect: Read-only, insufficient for initiating connections.

read: Read-only, insufficient for initiating connections.

Evaluate Options:

A: Too broad, includes unnecessary permissions; incorrect.

B: Precise permission for RPC initiation; correct.

C: Read-only, doesn't allow connection; incorrect.

D: Read-only, doesn't allow connection; incorrect.

Conclusion: 'use remote-peering-connections' is the essential policy.

RPCs require specific IAM policies for cross-tenancy connectivity. The Oracle Networking Professional study guide states, 'To initiate a Remote Peering Connection, the requesting tenancy needs an IAM policy with the 'use remote-peering-connections' verb targeting the acceptor tenancy's OCID' (OCI Networking Documentation, Section: Remote Peering Connections). This ensures controlled access for connection establishment.


Question No. 5

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?

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Correct Answer: B

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).


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