1z0-1124-25資格問題対応 & 1z0-1124-25認定試験

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Oracle 1z0-1124-25 認定試験の出題範囲：

トピック	出題範囲
トピック 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.
トピック 2	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.
トピック 3	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.
トピック 4	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.
トピック 5	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.
トピック 6	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.

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Oracle Cloud Infrastructure 2025 Networking Professional 認定 1z0-1124-25 試験問題 (Q83-Q88):

質問 # 83
Your company is migrating an on-premises application to OCI. The application requires direct, low-latency access to an on-premises Microsoft SQL Server database. You've established a FastConnect connection between your on-premises network and an OCI VCN via a Dynamic Routing Gateway(DRG). You want to access this database from the OCI VCN. Which type of endpoint, in conjunction with appropriate routing, should you use to facilitate this connection?

A. No specific OCI endpoint is required. The on-premises SQL Server is accessed directly through the DRG and appropriate routing.
B. A Service Gateway configured to access the on-premises SQL Server.
C. An Internet Gateway with a public endpoint on the SQL Server.
D. A Private Endpoint within the VCN configured to connect to the private IP address of the on-premises SQL Server.

正解：A

解説：
* Requirement: Low-latency, direct access to an on-premises SQL Server via FastConnect.
* Option A: Internet Gateway with a public endpoint exposes the SQL Server to the internet, increasing latency and security risks-incorrect.
* Option B: Service Gateway is for OCI services (e.g., Object Storage), not on-premises resources- incorrect.
* Option C: FastConnect with a DRG provides a private, low-latency link. No additional OCI endpoint is needed; the SQL Server's private IP is accessed directly via DRG routing-correct.
* Option D: Private Endpoints are for OCI services within the VCN (e.g., ADB), not on-premises resources-incorrect.
* Conclusion: Option C leverages FastConnect and DRG for direct, secure access.
Oracle documentation notes:
* "FastConnect with a DRG enables private, low-latency connectivity to on-premises networks.
Configure route tables to access on-premises resources directly; no additional endpoints are required." This supports Option C. Reference:FastConnect Overview - Oracle Help Center(docs.oracle.com/en-us
/iaas/Content/Network/Tasks/fastconnect.htm).

質問 # 84
Your company has decided to migrate its on-premises data center to OCI. As a network engineer, you need to establish a secure and reliable connection between the on-premises network and the OCI VCN with the following constraints: high bandwidth requirements, low latency requirements, secure private connection, and redundant connectivity crucial for business continuity. Which is the MOST suitable and resilient solution, considering the VCN gateway options?

A. A single VPN Connect connection to a DRG.
B. Multiple VPN Connect connections to a DRG.
C. Multiple FastConnect circuits to a DRG in conjunction with multiple VPN Connect connections to the same DRG.
D. A FastConnect circuit with a DRG.

正解：C

解説：
* Constraints: High bandwidth, low latency, secure private connection, redundancy.
* Option A: Single VPN Connect offers security but lacks high bandwidth, low latency, and redundancy-unsuitable for migration needs.
* Option B: Multiple VPNs improve redundancy but still rely on public internet, limiting bandwidth and latency performance compared to dedicated circuits.
* Option C: Single FastConnect provides high bandwidth, low latency, and privacy via a dedicated line, but lacks redundancy.
* Option D: Multiple FastConnect circuits ensure high bandwidth and low latency with redundancy.
Adding multiple VPNs as backup enhances resilience, meeting all constraints.
* Conclusion: Option D is the most suitable and resilient, balancing performance and continuity.
Oracle states:
* "FastConnect provides a private, high-bandwidth, low-latency connection to OCI. Use multiple circuits for redundancy."
* "Combine FastConnect with IPSec VPN for additional failover options."Option D aligns with this guidance. Reference:FastConnect Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content
/Network/Tasks/fastconnect.htm).

質問 # 85
Your organization is migrating workloads to a multicloud environment using OCI, AWS, and Azure. You have applications that require access to on-premises resources and must maintain high security standards.
Which connectivity configuration would provide the MOST secure and reliable access while adhering to best practices for a hybrid multicloud architecture?

A. Connecting on-premises to OCI using FastConnect and building VPN tunnels from OCI to Azure and AWS
B. Establishing IPSec VPN tunnels from the on-premises network directly to each cloud provider (OCI, AWS, and Azure), terminating on the respective cloud provider's virtual network gateways
C. Using public internet connectivity for all cloud providers and relying on application-level security measures
D. Creating a private network connection to OCI using FastConnect, then extending the network to AWS and Azure using a software-defined WAN (SD-WAN) solution that supports end-to-end encryption and policy-based routing

正解：D

解説：
* Needs: Secure, reliable hybrid multicloud access.
* Option A: Multiple VPNs are secure but complex and less reliable over internet-less optimal.
* Option B: Public internet with app security is insecure-incorrect.
* Option C: FastConnect to OCI provides a private base; SD-WAN extends securely to AWS/Azure with encryption and HA-correct.
* Option D: FastConnect to OCI with VPNs to others risks OCI as a single point of failure-less reliable.
* Conclusion: Option C is the most secure and reliable.
Oracle advises:
* "For hybrid multicloud, use FastConnect for primary connectivity and SD-WAN to extend securely to other clouds with encryption and policy control."This supports Option C. Reference:Multicloud Best Practices - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/multicloud.
htm#bestpractices).

質問 # 86
Your team is deploying a critical, highly available application that relies on accessing a MySQL Database Service instance within OCI. The application requires a stable and predictable endpoint for database connectivity, even during database failover events. Which endpoint configuration is most suitable to ensure seamless application connectivity in this high-availability scenario?

A. Using the public IP address of the MySQL Database Service instance.
B. Using a DNS hostname that resolves to the floating private IP address of the active MySQL Database Service instance.
C. Using a Service Gateway to connect to the MySQL Database Service endpoint.
D. Using the private IP address of the primary MySQL Database Service instance directly.

正解：B

解説：
* Goal:Stable endpoint for MySQL DB with HA failover support.
* Endpoint Options:
* Public IP:Exposed, changes on failover; unsuitable.
* DNS with Floating IP:Persistent across failovers; ideal.
* Private IP:Tied to primary, fails on switch; incorrect.
* Service Gateway:For OCI services, not MySQL DB; incorrect.
* Evaluate Options:
* A:Public exposure, no HA; incorrect.
* B:Floating private IP with DNS ensures continuity; correct.
* C:Static IP breaks on failover; incorrect.
* D:Misaligned purpose; incorrect.
* Conclusion:DNS with floating IP is most suitable.
MySQL DB in OCI uses floating IPs for HA. The Oracle Networking Professional study guide explains, "A DNS hostname resolving to the floating private IP of the active MySQL Database Service instance ensures seamless connectivity during failover events" (OCI Networking Documentation, Section: MySQL Database Service HA). This provides predictability and stability.

質問 # 87
In a multi-tier application architecture with separate public and private subnets, where should an OCI Bastion host be placed to provide secure access to resources in the private subnets without exposing them to the internet?

A. In a separate VCN peered with the application VCN.
B. Directly in the private subnet.
C. In a dedicated public subnet specifically for Bastion hosts.
D. Behind an Internet Gateway in the public subnet.

正解：C

解説：
* Purpose:Secure access to private subnet resources via Bastion.
* Placement Considerations:Must be internet-accessible yet isolated.
* Evaluate Options:
* A:Private subnet lacks internet access for Bastion; incorrect.
* B:Dedicated public subnet balances accessibility and isolation; correct.
* C:Separate VCN adds complexity, unnecessary; less optimal.
* D:Ambiguous phrasing, but implies exposure; less precise than B.
* Conclusion:Dedicated public subnet is the best placement.
OCI Bastion requires public access with security. The Oracle Networking Professional study guide notes,
"Place the Bastion host in a public subnet with a dedicated configuration to allow secure SSH access to private subnet resources without exposing them directly" (OCI Networking Documentation, Section: Bastion Host Placement). Option B ensures this balance.

質問 # 88
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