最高の1z0-1124-25のPDF問題集100%PassTest試験合格率保証 [2026年02月]
PassTestの問題集で100%あなたの1z0-1124-25 Oracle Cloud Infrastructure 2025 Networking Professional試験を一発合格
Oracle 1z0-1124-25 認定試験の出題範囲：
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質問 # 11
You are designing an OCI networking architecture for a multi-tier application using Infrastructure as Code (IaC). The architecture includes an OKE cluster for the front-end, a set of Compute instances for the back- end, and an Autonomous Database. You want to ensure that all traffic between these components is encrypted. You are using Transport Layer Security (TLS) for end-to-end encryption but are concerned about the overhead of encrypting all traffic within the VCN. Which approach provides the MOST balanced approach to security and performance, minimizing the overhead of encryption while still protecting sensitive data?
- A. Implement TLS encryption for traffic between the OKE cluster and the Compute instances and use Oracle Database Vault to encrypt data at rest and in transit for the Autonomous Database.
- B. Use Network Security Groups (NSGs) and Security Lists to control access between components but do not implement any additional encryption within the VCN.
- C. Implement mutual TLS (mTLS) for all traffic between the OKE cluster, the Compute instances, and the Autonomous Database.
- D. Implement TLS encryption only between the OKE cluster and the load balancer. Rely on the inherent security of the OCI network for traffic within the VCN.
正解：A
解説：
* Goal: Balance security and performance with encryption in a VCN.
* Option A: TLS only to the load balancer leaves internal traffic unencrypted, risking exposure- insufficient security.
* Option B: mTLS everywhere maximizes security but adds significant overhead (e.g., certificate management), impacting performance-overkill.
* Option C: NSGs/Security Lists control access but don't encrypt traffic-lacks protection for sensitive data.
* Option D: TLS between OKE and Compute secures app-tier communication. Oracle Database Vault ensures ADB traffic is encrypted efficiently, leveraging built-in features-balanced approach.
* Conclusion: Option D optimizes security and performance.
Oracle states:
* "Use TLS for application traffic between tiers. Autonomous Database with Database Vaultprovides encryption in transit and at rest, minimizing overhead."This supports Option D. Reference:Security in OCI Networking - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts
/securityoverview.htm).
質問 # 12
In the context of OCI's Zero Trust Packet Routing, which principle emphasizes the necessity of explicitly defining and enforcing access controls at every stage of network communication?
- A. Implicit Trust
- B. Least Privilege
- C. Perimeter Security
- D. Network Segmentation
正解：B
解説：
* Zero Trust Context:Assumes no inherent trust, requiring explicit controls at all network stages.
* Evaluate Principles:
* Implicit Trust:Assumes trust, opposite of Zero Trust; incorrect.
* Least Privilege:Grants minimal access, explicitly enforced; aligns with Zero Trust.
* Perimeter Security:Relies on boundary protection, not Zero Trust; incorrect.
* Network Segmentation:Isolates networks, a tactic not a principle; incomplete.
* Conclusion:Least Privilege is the core principle for explicit access control.
Zero Trust Packet Routing in OCI emphasizes Least Privilege. The Oracle Networking Professional study guide states, "The Least Privilege principle in Zero Trust requires that access controls be explicitly defined and enforced at every network communication stage, ensuring no implicit trust" (OCI Networking Documentation, Section: Zero Trust Networking). This drives granular security policies.
質問 # 13
You are responsible for maintaining the network connectivity between OCI and Azure using the OCI-Azure Interconnect. You need to perform planned maintenance on your on-premises network, which will temporarily disrupt the BGP (Border Gateway Protocol) sessions between your on-premises network and both OCI and Azure. You want to ensure that traffic between OCI and Azure continues to flow without interruption during the maintenance window. Which action is MOST important to take before starting the maintenance to ensure continuous connectivity between OCI and Azure?
- A. Notify Oracle and Microsoft support teams about the planned maintenance window.
- B. Disable the BGP sessions on both OCI and Azure before starting the maintenance.
- C. Increase the BGP keepalive timers on both OCI and Azure to prevent the sessions from timing out.
- D. Configure static routes in OCI and Azure to directly route traffic between the VCNs/VNets without relying on BGP.
正解：D
解説：
* Goal: Ensure OCI-Azure traffic during BGP disruption.
* Option A: Static routes bypass BGP dependency, maintaining connectivity-correct.
* Option B: Disabling BGP stops routing-incorrect.
* Option C: Notification doesn't ensure connectivity-incorrect.
* Option D: Keepalive timers delay detection, not prevent disruption-incorrect.
* Conclusion: Option A is most critical.
Oracle notes:
* "For uninterrupted OCI-Azure Interconnect traffic during BGP maintenance, configure static routes between VCNs and VNets."This supports Option A. Reference:OCI-Azure Interconnect - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/ociazureinterconnect.htm).
質問 # 14
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. Behind an Internet Gateway in the public subnet.
- C. In a dedicated public subnet specifically for Bastion hosts.
- D. Directly in the private 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 # 15
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?
- A. The subnet CIDR blocks within your OCI VCN.
- B. The OCI region and availability domain.
- C. The OCID (Oracle Cloud Identifier) of the VPN connection and the compartment ID.
- D. The public IP address of the OCI Dynamic Routing Gateway (DRG) and the IKE pre-shared key.
正解：D
解説：
* 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).
質問 # 16
You have successfully enabled DNSSEC on your OCI DNS zone and provided the DS record to your domain registrar. However, when you test your DNS configuration using online DNSSEC validation tools, you are still seeing errors indicating that DNSSEC validation is failing. What is the most likely reason for this failure?
- A. The OCI DNS resolver is not configured to validate DNSSEC signatures.
- B. The Time To Live (TTL) value for your DNS records is too low, causing validation errors.
- C. The DNSSEC algorithm used by OCI DNS is not supported by the validation tools.
- D. The domain registrar has not yet published the DS record in the parent zone, preventing the chain of trust from being established.
正解：D
解説：
* Problem:DNSSEC validation fails post-setup.
* DNSSEC Chain:Requires DS record in parent zone for trust.
* Evaluate Causes:
* A:Low TTL affects caching, not validation; unlikely.
* B:Missing DS in parent zone breaks chain; most likely.
* C:Resolver config is client-side, not affecting external tools; incorrect.
* D:OCI uses standard algorithms; highly unlikely.
* Conclusion:Registrar delay in publishing DS is the primary cause.
DNSSEC relies on the parent zone. The Oracle Networking Professional study guide explains, "DNSSEC validation fails if the registrar hasn't published the DS record in the parent zone, as this breaks the chain of trust" (OCI Networking Documentation, Section: DNSSEC Troubleshooting). This is a common post- enablement issue.
質問 # 17
You are designing a hybrid cloud architecture connecting your on-premises network to OCI. You have established a Site-to-Site VPN between your on-premises network and an OCI DRG. You have two VCNs attached to the DRG: VCN-A (10.0.0.0/16) and VCN-B (10.1.0.0/16). You need to ensure that only VCN-A can communicate with the on-premises network (192.168.1.0/24), while VCN-B should remain isolated. What is the MOST effective and secure method to achieve this connectivity requirement using DRG route tables?
- A. Create two DRG route tables: DRG-RT-A and DRG-RT-B. In DRG-RT-A, add a route rule for
192.168.1.0/24 pointing to the VPN attachment. Associate DRG-RT-A with the VCN-A attachment.
Associate DRG-RT-B (containing no routes for 192.168.1.0/24) with the VCN-B attachment. - B. Create two DRG route tables: DRG-RT-A and DRG-RT-B. In DRG-RT-A, add a route rule for
192.168.1.0/24 pointing to the VPN attachment. Associate DRG-RT-A with the VCN-A attachment. In DRG-RT-B, add a route rule for 192.168.1.0/24 pointing to the VPN attachment and associate DRG- RT-B with the VCN-B attachment. Then, use security lists to block all traffic between VCN-B and the on-premises network. - C. Create a single DRG route table. Add a route rule to the DRG route table for 192.168.1.0/24 pointing to the VPN attachment. Associate this route table with the VCN-A attachment. Associate a default DRG route table that contains no routes for the VPN attachment with the VCN-Battachment.
- D. Create a single DRG route table. Add a route rule to the DRG route table for 192.168.1.0/24 pointing to the VPN attachment. Associate this route table with both the VCN-A and VCN-B attachments.
Implement Network Security Groups (NSGs) on VCN-B to block all traffic to and from 192.168.1.0/24.
正解：A
解説：
* Objective: Allow VCN-A to access on-premises (192.168.1.0/24) via VPN, isolate VCN-B using DRG route tables effectively and securely.
* Option A: Single route table for both VCNs with NSGs on VCN-B to block traffic. This works but relies on NSGs, which are secondary to routing. Routing-level isolation is more secure and efficient.
* Option B: Single route table for VCN-A with the VPN route, default table (no VPN route) for VCN-B.
This isolates VCN-B effectively at the routing level, but managing one table across all attachments can complicate scaling.
* Option C: Two route tables, both with VPN routes, then blocking VCN-B with security lists. This is inefficient-routes are advertised unnecessarily, relying on security lists instead of routing isolation.
* Option D: Two route tables-DRG-RT-A with VPN route for VCN-A, DRG-RT-B with no VPN route for VCN-B. This ensures VCN-B has no path to on-premises at the DRG level, providing the strongest isolation.
* Conclusion: Option D is the most effective and secure, leveraging routing for isolation rather than secondary security controls.
Oracle documentation states:
* "DRG route tables control traffic between VCN attachments and external connections (e.g., VPN).
Associate a unique route table with each attachment to enforce specific routing policies."
* "To isolate a VCN, ensure its DRG route table contains no routes to the destination."Option D aligns with this approach. Reference:Dynamic Routing Gateway Overview - Oracle Help Center(docs.oracle.
com/en-us/iaas/Content/Network/Tasks/managingDRGs.htm).
質問 # 18
Which OCI component facilitates transitive routing between VCNs in different regions via a dedicated, private network backbone, while also enabling connectivity to on-premises networks?
- A. Internet Gateway
- B. Dynamic Routing Gateway (DRG)
- C. Local Peering Gateway (LPG)
- D. Service Gateway
正解：B
解説：
* Requirement:Transitive routing across regions and to on-premises, privately.
* Components:
* LPG:Intra-region VCN peering; limited scope.
* DRG:Cross-region and on-premises routing via private backbone.
* Service Gateway:OCI service access; not transitive.
* Internet Gateway:Public internet; not private.
* Evaluate Options:
* A:Region-specific; incorrect.
* B:Supports multi-region and on-premises; correct.
* C:Service-focused; incorrect.
* D:Public; incorrect.
* Conclusion:DRG is the key component.
DRG enables complex routing scenarios. The Oracle Networking Professional study guide notes, "The Dynamic Routing Gateway (DRG) facilitates transitive routing between VCNs in different regions and on- premises networks over OCI's private backbone" (OCI Networking Documentation, Section: Dynamic Routing Gateway). This meets both requirements efficiently.
質問 # 19
You are a Network Engineer designing a hybrid cloud architecture for a large enterprise. The company requires secure and private connectivity between their on-premises network and their OCI VCN. They have sensitive data that cannot traverse the public internet. Which OCI VCN gateway is most appropriate for establishing this connection, ensuring end-to-end data encryption and isolation from the public internet?
- A. A Dynamic Routing Gateway (DRG) connected to a FastConnect circuit.
- B. An Internet Gateway configured with default route rules.
- C. A Service Gateway configured to access Oracle Services.
- D. A NAT Gateway configured with public IPs for all subnets.
正解：A
解説：
* Requirements:Private, encrypted connectivity to on-premises, no public internet.
* Gateway Options:
* Service Gateway:For OCI services, not on-premises.
* Internet Gateway:Public internet access, unsuitable.
* DRG with FastConnect:Private on-premises connectivity.
* NAT Gateway:Outbound internet, not private to on-premises.
* Evaluate Options:
* A:Limited to OCI services; incorrect.
* B:Uses public internet; violates policy.
* C:FastConnect via DRG ensures private, encrypted link; correct.
* D:Public IPs contradict requirement; incorrect.
* Conclusion:DRG with FastConnect is the most appropriate.
FastConnect provides private connectivity via DRG. The Oracle Networking Professional study guide states,
"A Dynamic Routing Gateway with FastConnect establishes a dedicated, private connection to on-premises networks, ensuring data encryption and isolation from the public internet" (OCI Networking Documentation, Section: FastConnect). This meets security and privacy needs.
質問 # 20
Your company needs to establish a secure connection between your on-premises network and OCI for a pilot project. The project has a limited budget and requires a quick setup, but also demands that the connection is encrypted. The long-term plan involves migrating to FastConnect, but that will take several months. Which OCI VPN solution would be most suitable for this short-term, budget-conscious, and security-aware scenario?
- A. Use a Dynamic Routing Gateway (DRG) with a Site-to-Site VPN connection configured using static routing.
- B. Use a Service Gateway to connect to a third-party VPN service available on the internet.
- C. Use a Dynamic Routing Gateway (DRG) with a Site-to-Site VPN connection configured using dynamic routing with BGP.
- D. Deploy a third-party virtual appliance VPN solution from the OCI Marketplace within a public subnet and configure a VPN connection to your on-premises network.
正解：A
解説：
* Requirements:Quick, cheap, encrypted VPN; interim before FastConnect.
* VPN Options:
* Static VPN:Simple, native, low cost.
* Third-Party Appliance:Complex, costly.
* Service Gateway:Not for VPN; incorrect.
* BGP VPN:Dynamic, more setup; less quick.
* Evaluate Options:
* A:Static VPN is fast, secure, budget-friendly; correct.
* B:Appliance adds cost and complexity; incorrect.
* C:Misaligned use of Service Gateway; incorrect.
* D:BGP is overkill for pilot; less efficient.
* Conclusion:Static VPN via DRG is most suitable.
Static VPN is ideal for quick setups. The Oracle Networking Professional study guide notes, "A Site-to-Site VPN with static routing via DRG provides a fast, encrypted connection for short-term needs, minimizing cost and setup time" (OCI Networking Documentation, Section: Site-to-Site VPN). This fits the pilot project perfectly.
質問 # 21
Which OCI logging feature allows you to correlate network traffic patterns from Flow Logs with application- level events from Service Logs for comprehensive troubleshooting?
- A. Log Streams
- B. Log Export
- C. Log Analytics
- D. Log Groups
正解：C
解説：
* Objective: Correlate Flow Logs and Service Logs for troubleshooting.
* Option A: Log Groups organize logs but don't analyze correlations-incorrect.
* Option B: Log Analytics enables querying and visualizing logs from multiple sources, ideal for correlation-correct.
* Option C: Log Streams collect logs but don't correlate-incorrect.
* Option D: Log Export moves logs, not analyzes them-incorrect.
* Conclusion: Log Analytics is the best feature.
Oracle documentation confirms:
* "Log Analytics allows you to correlate and analyze logs from Flow Logs and Service Logs, providing insights for troubleshooting."This validates Option B. Reference:Log Analytics Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Logging/Concepts/loganalytics.htm).
質問 # 22
When configuring transitive routing with a DRG across multiple VCNs and on-premises networks, which key configuration step ensures that traffic from one VCN is correctly routed through the DRG to an on-premises destination?
- A. Configuring static routes on the DRG route table with the on-premises network CIDR and the corresponding VCN attachment.
- B. Attaching all VCNs to a single LPG and configuring route tables to direct traffic to the on-premises network.
- C. Configuring dynamic routing protocol (e.g., BGP) on the DRG and the on-premises Customer Premises Equipment (CPE).
- D. Implementing a Service Gateway to facilitate direct communication between the VCNs and the on- premises network.
正解：C
解説：
* Transitive Routing Goal:Traffic from a VCN to an on-premises network via DRG.
* DRG Role:Acts as a virtual router connecting VCNs and on-premises networks.
* Routing Options:
* Static Routes:Manually defined, less scalable for dynamic environments.
* Dynamic Routing (BGP):Automatically exchanges routes, ideal for hybrid setups.
* Evaluate Options:
* A:Static routes work but require manual updates; less efficient.
* B:BGP dynamically propagates routes, ensuring correct routing; best fit.
* C:LPG is for intra-region peering, not on-premises connectivity; incorrect.
* D:Service Gateway is for OCI services, not on-premises; incorrect.
* Conclusion:BGP ensures scalable, accurate routing through the DRG.
The DRG supports transitive routing with dynamic protocols like BGP. The Oracle Networking Professional study guide states, "For transitive routing between VCNs and on-premises networks via a DRG, configuring BGP on the DRG and CPE enables automatic route propagation, ensuring traffic is correctly routed" (OCI Networking Documentation, Section: Dynamic Routing Gateway). BGP is preferred over static routes for hybrid cloud scenarios.
質問 # 23
Which aspect of OCI's security framework is essential for continuous monitoring and verification of packet flows, a core requirement of Zero Trust Packet Routing?
- A. Static routing configurations
- B. Default security lists
- C. Flow logs and audit trails
- D. Public IP address assignments
正解：C
解説：
* Goal: Support Zero Trust with packet flow monitoring.
* Option A: Static routing defines paths, not monitoring-incorrect.
* Option B: Security lists control access, not monitor-incorrect.
* Option C: Flow logs track traffic; audit trails log actions-essential for Zero Trust-correct.
* Option D: Public IPs enable access, not monitoring-incorrect.
* Conclusion: Option C is essential.
Oracle states:
* "Flow logs and audit trails provide continuous monitoring and verification of packet flows, critical for Zero Trust Packet Routing."This supports Option C. Reference:Zero Trust in OCI - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Concepts/zerotrust.htm).
質問 # 24
You're designing a multi-region deployment of your application on OCI. You want to use OCI's global load balancing capabilities, but also require the WAF to protect against attacks close to the user. Which configuration provides the best balance between global load balancing and regional WAF protection?
- A. Use OCI Global Load Balancer (GLB) with a single regional WAF protecting the backend servers in one region.
- B. Configure the OCI GLB to distribute traffic based on source IP address to specific regions, and enable WAF on the regional Load Balancer.
- C. Use OCI GLB to distribute traffic to regional Load Balancers, each fronted by a regional WAF.
- D. Configure the WAF in front of the OCI GLB itself to inspect all traffic globally.
正解：C
解説：
* Goal: Balance global load balancing with regional WAF protection near users.
* Option A: Single WAF in one region creates a bottleneck and increases latency-insufficient.
* Option B: GLB distributes globally to regional Load Balancers, each with a WAF, ensuringprotection close to users-correct.
* Option C: WAF before GLB centralizes protection, adding latency and a single failure point-incorrect.
* Option D: Source IP routing with regional WAFs is less optimal than GLB's health-based routing- less effective.
* Conclusion: Option B optimizes both goals.
Oracle states:
* "OCI GLB distributes traffic across regions. Pair with regional Load Balancers and WAFs for localized protection and optimal performance."This supports Option B. Reference:Global Load Balancer Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Balance/Concepts/globalbalance.
htm).
質問 # 25
You are managing an OCI Network Firewall that protects a VCN with multiple subnets. The application team reports intermittent connectivity issues to a specific application server behind the firewall. You suspect the issue might be related to the firewall's stateful inspection. What would be the most efficient way to troubleshoot if the stateful inspection is causing these connectivity issues?
- A. Review the Network Firewall logs for denied traffic originating from or destined to the application server.
- B. Create a Network Firewall policy with a specific rule that allows all traffic to/from the affected application server, bypassing inspection.
- C. Disable stateful inspection on the entire Network Firewall to check if the connectivity is restored.
- D. Recreate the Network Firewall with a completely different configuration.
正解：A
解説：
* Identify the Goal: Troubleshoot efficiently to determine if stateful inspection is causing intermittent connectivity issues.
* Option A Evaluation: Disabling stateful inspection globally removes all security checks, potentially restoring connectivity but disrupting the entire VCN's security. This is inefficient and risky.
* Option B Evaluation: Creating a bypass rule for the application server avoids inspection, which could confirm the issue but weakens security for that server. It's a workaround, not a diagnostic step, and requires policy changes during troubleshooting.
* Option C Evaluation: Reviewing firewall logs for denied traffic is targeted and non-disruptive. Logs show if stateful inspection is dropping packets (e.g., due to session timeouts or rule mismatches), directly identifying the cause without altering configurations.
* Option D Evaluation: Recreating the firewall is highly disruptive, time-consuming, and doesn't guarantee insight into the current issue. It's not a troubleshooting step.
* Conclusion: Option C is the most efficient, as it leverages logs for precise diagnosis without impacting operations.
Per Oracle's Network Firewall documentation:
* "Network Firewall logs provide detailed information about allowed and denied traffic, including source
/destination IPs, ports, and protocols. Use logs to troubleshoot connectivity issues by identifying dropped packets due to stateful inspection or rule mismatches."
* "Stateful inspection tracks connection states; misconfigurations can lead to dropped sessions."This confirms logs are the best tool for diagnosing stateful inspection issues. Reference:Network Firewall Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/NetworkFirewall/overview.htm).
質問 # 26
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