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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

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 3

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 4

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 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

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

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 (Q33-Q38):

NEW QUESTION # 33
You are designing a multi-tier application in OCI, deploying the application tier in a public subnet and the database tier in a private subnet within the same VCN. The application tier requires access to specific external internet resources for software updates and third-party API calls. However, the database tier should not have direct internet access. Which of the following is the most secure and efficient method to achieve this configuration?

A. Configure a NAT Gateway for both the public and private subnets.
B. Configure a NAT Gateway for the public subnet and a Service Gateway for the private subnet.
C. Configure a NAT Gateway for the private subnet and an Internet Gateway for the public subnet.
D. Configure a NAT Gateway for the private subnet and a Service Gateway for the public subnet.

Answer: C

Explanation:
* Requirements:App tier (public) needs internet; DB tier (private) must not.
* Components:
* Internet Gateway:Full internet access for public subnets.
* NAT Gateway:Outbound-only internet for private subnets.
* Service Gateway:Private OCI service access.
* Evaluate Options:
* A:Reversed roles; public subnet doesn't need Service Gateway; incorrect.
* B:NAT for public is unnecessary with Internet Gateway; inefficient.
* C:NAT for public is wrong; Service Gateway doesn't block DB internet; incorrect.
* D:Internet Gateway for app, NAT for DB if needed, aligns with policy; correct.
* Conclusion:Option D is most secure and efficient.
Subnet roles dictate gateway use. The Oracle Networking Professional study guide states, "Public subnets use an Internet Gateway for full internet access, while private subnets can use a NAT Gateway for outbound-only access, ensuring no direct internet exposure" (OCI Networking Documentation, Section: VCN Gateways).
Option D balances security and functionality.

NEW QUESTION # 34
You are troubleshooting a network connectivity issue between a compute instance in a private subnet within your VCN and a service on the public internet using Cloud Shell. You suspect a problem with the network security group (NSG) rules associated with the instance's VNIC. Which Cloud Shell command and appropriate tool combination allows you to directly inspect the NSG configuration impacting the VNIC?

A. oci network network-security-group get --nsg-id <NSG_OCID> piped to grep <instance_VNIC_OCID>
B. oci compute instance get --instance-id <instance_OCID> piped to jq '.vnics[].nic_id | oci network vnic get --vnic-id .' piped to jq '.network_security_group_ids[] | oci network network-security-group get -- nsg-id .'
C. oci network vnic get --vnic-id <instance_VNIC_OCID> piped to awk '/network_security_group_ids/
{print $2}' | xargs oci network network-security-group get --nsg-id
D. oci compute instance get --instance-id <instance_OCID> piped to grep NetworkSecurityGroupIds

Answer: B

Explanation:
* Goal:Inspect NSG rules for a VNIC from Cloud Shell.
* Command Flow:
* Get instance # Extract VNIC # List NSGs # Get NSG details.
* Evaluate Options:
* A:Direct NSG fetch lacks VNIC linkage; incomplete.
* B:Full pipeline from instance to NSG details; precise and correct.
* C:Grep is too basic, misses structure; incorrect.
* D:Awk parsing is fragile, less reliable than jq; less optimal.
* Conclusion:Option B provides the most robust inspection.
CLI with jq ensures accurate NSG retrieval. The Oracle Networking Professional study guide notes, "To troubleshoot NSG rules, use the OCI CLI to fetch instance VNIC details and associated NSG configurations, piping through jq for structured output" (OCI Networking Documentation, Section: CLI Troubleshooting).
Option B follows this methodology.

NEW QUESTION # 35
Your organization is deploying a critical database application on OCI. To ensure high availability, you have deployed the database instances across multiple availability domains (ADs) within asingle region. You need to distribute client connections to the database instances and ensure that the load balancer can handle long- lived TCP connections with minimal overhead. Session persistence is not required. Which OCI load balancing solution would you choose in this scenario to minimize latency and connection establishment overhead?

A. Flexible Load Balancer with HTTP health checks.
B. Network Load Balancer with TCP health checks.
C. Application Load Balancer with HTTP health checks.
D. Application Load Balancer with TCP health checks.

Answer: B

Explanation:
* Requirements:Low-latency, minimal overhead for TCP connections, no session persistence.
* Load Balancer Types:
* Application Load Balancer (ALB):Layer 7, higher overhead, suited for HTTP/HTTPS.
* Network Load Balancer (NLB):Layer 4, low overhead, ideal for TCP/UDP.
* Evaluate Options:
* A:ALB with HTTP checks is for HTTP traffic, adds overhead; unsuitable.
* B:NLB with TCP checks is optimized for TCP, low latency; best fit.
* C:ALB with TCP checks still has Layer 7 overhead; less efficient.
* D:"Flexible Load Balancer" isn't a specific OCI service; incorrect.
* Conclusion:NLB minimizes latency and overhead for TCP connections.
The Network Load Balancer is designed for high-performance TCP scenarios. The Oracle Networking Professional study guide states, "Network Load Balancer operates at Layer 4, providing low-latency, high- throughput load balancing for TCP/UDP traffic with minimal overhead, ideal for database connections" (OCI Networking Documentation, Section: Load Balancing). TCP health checks ensure instance availability without session persistence complexity.

NEW QUESTION # 36
Your application running on OCI Compute instances in a private subnet requires high availability and the ability to distribute incoming traffic across multiple instances. You need to ensure that the load balancer can handle both HTTP and HTTPS traffic and provides health checks to monitor the availability of your backend servers. Which OCI Load Balancer offering is the most suitable for this scenario, considering both functionality and cost-effectiveness for a production environment?

A. Flexible Load Balancer with only TCP listeners.
B. Network Load Balancer (NLB) with TCP listeners.
C. Flexible Load Balancer with HTTP and HTTPS listeners and health checks.
D. Network Load Balancer (NLB) with UDP listeners.

Answer: C

Explanation:
* Requirements: HA, HTTP/HTTPS support, health checks, cost-effectiveness.
* Option A: NLB with TCP is Layer 4, lacks HTTP/HTTPS features-incorrect.
* Option B: Flexible Load Balancer (Application LB) supports Layer 7 HTTP/HTTPS and health checks, ideal for production-correct.
* Option C: NLB with UDP is irrelevant for HTTP/HTTPS-incorrect.
* Option D: Flexible LB with TCP only limits Layer 7 features-incorrect.
* Conclusion: Option B meets all needs efficiently.
Oracle states:
* "The Application Load Balancer (Flexible LB) supports HTTP/HTTPS with health checks, suitable for production workloads."This supports Option B. Reference:Load Balancer Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Balance/Concepts/balanceoverview.htm).

NEW QUESTION # 37
Which of the following is a disadvantage of using a public internet-based VPN connection for migrating large datasets from another cloud provider to OCI?

A. VPN connections are inherently less secure than dedicated private connections
B. The throughput of a VPN connection is limited by the available bandwidth and latency of the public internet
C. VPN connections are not compatible with all OCI services
D. VPN connections cannot be automated using Infrastructure as Code (IaC) tools

Answer: B

Explanation:
* Objective: Identify a VPN disadvantage for large dataset migration.
* Option A: VPNs can be secure with IPSec; not inherently less secure-incorrect.
* Option B: VPNs are automatable with IaC (e.g., Terraform)-incorrect.
* Option C: Public internet limits VPN throughput due to bandwidth and latency variability-correct disadvantage.
* Option D: VPNs are compatible with OCI services-incorrect.
* Conclusion: Option C is the key disadvantage.
Oracle notes:
* "Public internet-based VPNs face throughput limitations due to bandwidth and latency variability, impacting large data migrations."This supports Option C. Reference:VPN Limitations - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.htm#limitations).

NEW QUESTION # 38
......

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