1z0-1124-25試験無料問題集（122題）「Oracle Cloud Infrastructure 2025 Networking Professional 認定」

出題：1

You are managing a critical application hosted on OCI. To enhance security, you have enabled DNSSEC for your domain using OCI DNS. You want to automate the process of monitoring the health and validity of your DNSSEC configuration and receive alerts if any issues are detected. Which OCI service can be MOST effectively used for this DNSSEC monitoring purpose?

A. OCI Monitoring Service.

B. OCI Vulnerability Scanning Service.

C. OCI Audit Service.

D. OCI Logging Analytics.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

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 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.

B. Configure a single VPN connection with two tunnels, ensuring that both tunnels use different CPE IP addresses on the on-premises side.

C. Configure a single VPN connection with a single tunnel and rely on the underlying OCI infrastructure for automatic failover.

D. Configure a single VPN connection with two tunnels using the same CPE IP address.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

A large financial institution is migrating its on-premises trading platform to OCI. The platform requires low latency and high bandwidth connectivity to the on-premises data center. You have established an Oracle Cloud Infrastructure FastConnect circuit. You now need to connect multiple VCNs in different regions to the on-premises data center via this FastConnect circuit, optimizing for cost and management overhead. Which DRG configuration would be the most efficient and recommended approach?

A. Create a single DRG in one region. Attach all VCNs in all regions to this single DRG using DRG attachments with remote peering. Attach the FastConnect circuit to the single DRG.

B. Create a single DRG in one region and attach all VCNs in all regions to this single DRG using remote peering connections. Attach the FastConnect circuit to this single DRG. Configure static routes on the DRG to direct traffic to the appropriate VCNs.

C. Create a separate DRG in each region and attach each VCN to its regional DRG. Then, create a separate FastConnect attachment to each regional DRG. Finally, configure static routes on each DRG to direct traffic appropriately.

D. Create a single DRG in one region and attach all VCNs in all regions to this single DRG using local peering gateways (LPGs). Attach the FastConnect circuit to this single DRG. Configure static routes on the DRG to direct traffic to the appropriate VCNs.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

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 dedicated public subnet specifically for Bastion hosts.

B. Directly in the private subnet.

C. Behind an Internet Gateway in the public subnet.

D. In a separate VCN peered with the application VCN.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

You are troubleshooting an issue where a compute instance in a private subnet within a VCN cannot reach OCI Object Storage. You have verified that a Service Gateway is configured for the VCN and that the route table associated with the subnet has a route rule directing traffic for OCI Services to the Service Gateway.
However, the instance still cannot connect. What is the MOST likely cause of the problem?

A. The Service Gateway is not configured to allow access to OCI Object Storage.

B. The security list or network security group associated with the subnet or instance is not configured to allow outbound traffic to the OCI Object Storage service CIDR block.

C. The instance is not configured with the Oracle Cloud Agent.

D. The instance requires a public IP address to access OCI Object Storage.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

Which OCI feature allows the DRG to dynamically learn routes from on-premises networks, facilitating automated route propagation to connected VCNs?

A. Local Peering Gateway (LPG)

B. Internet Gateway

C. Border Gateway Protocol (BGP)

D. Service Gateway

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

Your company is utilizing a multi-cloud architecture with applications running on both OCI and AWS. You have established a Site-to-Site VPN connection between OCI and AWS for secure communication. Over time, you observe that the VPN tunnel becomes unstable and frequently disconnects, particularly during peak hours.
You suspect this is due to increased network latency and packet loss. Which action is least likely to improve the stability and reliability of your OCI-AWS Site-to-Site VPN connection in this scenario?

A. Implement Quality of Service (QoS) on both the OCI and AWS VPN gateways to prioritize VPN traffic.

B. Adjust the IKE (Internet Key Exchange) and IPSec parameters, such as rekeying intervals and encryption algorithms, to optimize performance.

C. Transition from a Site-to-Site VPN to a dedicated interconnect solution (e.g., FastConnect with a partner to AWS) for higher bandwidth and lower latency.

D. Increase the MTU (Maximum Transmission Unit) size on the VPN tunnel interfaces to reduce fragmentation.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

You are managing a Site-to-Site VPN connection between your on-premises network and OCI. You notice that the VPN tunnel is frequently dropping and re-establishing. You have verified the internet connectivity at both ends and confirmed that the IKE (Internet Key Exchange) parameters are correctly configured. Which of the following is the most likely cause of the intermittent VPN tunnel disconnections?

A. The OCI Dynamic Routing Gateway (DRG) is experiencing a temporary outage.

B. There is a misconfiguration in the security rules, blocking the IKE or ESP (Encapsulating Security Payload) traffic.

C. The on-premises Customer-Premises Equipment (CPE) is configured with an incorrect public IP address.

D. The on-premises firewall is configured with incorrect NAT-Traversal settings.

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：9

You are designing a multi-tier application within an OCI Virtual Cloud Network (VCN). The application comprises a public-facing web tier in one subnet, an application tier in another, and a database tier in a third.
For security reasons, you want to ensure that only the application tier can initiate connections to the database tier. The web tier needs to be able to communicate with the application tier, but not directly with the database tier. You are using private IP addresses within your VCN. Which procedural step is MOST effective to achieve this network isolation?

A. Create separate security lists for each subnet and configure ingress and egress rules to restrict traffic accordingly. Create appropriate route rules in each subnet's route table.

B. Create a single Network Security Group (NSG) and associate it with all three subnets. Configure ingress and egress rules within the single NSG to restrict traffic accordingly.

C. Create separate Network Security Groups (NSGs) for each tier and configure ingress and egress rules to restrict traffic accordingly. Configure the route table for the Web Tier subnet to route traffic destined for the Database Tier subnet through the Application Tier.

D. Create separate security lists for each subnet and configure ingress and egress rules to restrict traffic accordingly. Configure the route table for the Web Tier subnet to route traffic destined for the Database Tier subnet through the Application Tier.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

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 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.

B. 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.

C. 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.

D. 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.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

1z0-1124-25試験無料問題集「Oracle Cloud Infrastructure 2025 Networking Professional 認定」