最新 [2025年05月08日] Oracle 1Z0-1124-24リアル試験問題集PDF
1Z0-1124-24練習テスト問題は更新された131問題あります
質問 # 17
In a multi-tier OCI architecture, which of the following BEST describes the combined value of the WAF (Web Application Firewall) and Edge services?
- A. They offer comprehensive web application security filtering and content delivery acceleration.
- B. They enable secure remote access to private resources within the architecture.
- C. They primarily provide network load balancing across multiple web servers.
- D. They primarily offer encryption and certificate management capabilities.
正解：A
解説：
Here,s why:
A). Network load balancing: While both services can contribute to load balancing, their primary roles are not focused on it.C. Secure remote access: While security is crucial, OCI WAF and Edge services primarily address web application security and content delivery, not direct remote access to private resources.D. Encryption and certificate management: Encryption and certificate management are important aspects of OCI services, but not the key focus of WAF and Edge services in this context.How WAF and Edge services add value in a multi-tier architecture:
WAF: Provides a robust layer of security by filtering incoming web traffic and blocking malicious attacks like SQL injection, cross-site scripting (XSS), and other threats, protecting your web applications from vulnerabilities.
Edge services: Enhance performance and user experience by caching static content closer to users through geographically distributed edge locations. This reduces latency and improves responsiveness for end users accessing your web applications.
質問 # 18
You have successfully configured a network firewall to inspect N-S traffic and E-W traffic going in and out of the Oracle Cloud Infrastructure (OCI) network, as shown in the architecture diagram.
The Dynamic Routing Gateway (DRG) is correctly configured between the firewall hub Virtual Cloud Network (VCN) and spoke VCN for inter-VCN communication. The network firewall security policy is configured with 5-tuple security rules, as shown below:
Which two statements are correct with respect to network firewall policy configuration?
Response:
- A. Network firewall allows SSH traffic from ServerA to ServerB.
- B. Network firewall denies ICMP traffic from ServerB to ServerA.
- C. Network firewall allows ICMP traffic from ServerB to ServerA.
- D. Network firewall denies SSH traffic from ServerA to ServerB.
正解：A、C
質問 # 19
Which of the following methods DOES NOT provide secure inter-tenancy communication?
- A. Service Gateway endpoint with resource-level IAM policies
- B. FastConnect with private peering and security zones
- C. VCN Peering with IAM policies restricting access to specific resources
- D. Internet Gateway with firewall rules and VPN connection to each tenancy
正解：D
解説：
A). VCN Peering with IAM policies: This offers secure communication within a controlled environment through dedicated peering connections and granular access control with IAM policies.B. FastConnect with private peering and security zones: This method establishes secure, dedicated connections with additional isolation through security zones within FastConnect.C. Service Gateway endpoint with resource-level IAM policies: This utilizes a managed service for secure communication with fine-grained control over access using resource-level IAM policies.D. Internet Gateway with firewall rules and VPN connection: While this method can establish connections, it relies on the public internet, posing inherent security risks. Publicly exposed resources and the potential for vulnerabilities in individual VPN connections make this option less secure compared to controlled and dedicated solutions like VCN peering, FastConnect, and Service Gateway.
質問 # 20
To minimize downtime during a mission-critical application migration to OCI, which approach is most appropriate?
- A. Cold cutover: Shut down the application and migrate all data and configuration at once.
- B. Lift and shift: Migrate the entire application without modifying its architecture or configuration.
- C. Pilot migration: Migrate a small subset of users or functionality first, gradually migrating the rest.
- D. Blue-green deployment: Run the application simultaneously on both environments and switch traffic to OCI after testing.
正解：D
解説：
A) Cold cutover: This involves shutting down the entire application, leading to significant downtime, making it unsuitable for mission-critical scenarios.
C) Pilot migration: While helpful for testing and reducing overall risk, it still involves downtime for the migrated subset of users or functionality.
D) Lift and shift: While potentially faster, it doesn,t address potential downtime issues within the new environment and might require adjustments for optimal performance on OCI.
B) Blue-green deployment: This approach offers several advantages for minimizing downtime:
Simultaneous operation: You run the application simultaneously on both the on-premises and OCI environments.
Thorough testing: You can extensively test the OCI deployment while the original application keeps running.
Traffic cutover: Once fully tested and validated, you switch traffic seamlessly to the OCI deployment with minimal interruption.
質問 # 21
A application requires SSL termination and inspection. Which OCI load balancer feature supports this?
- A. Listener Health Checks
- B. Backend Set Session Persistence
- C. SSL Offload
- D. Source IP Preservation
正解：C
解説：
A). Listener Health Checks: These verify server availability and responsiveness, not related to SSL termination or inspection.B. Backend Set Session Persistence: This helps maintain user sessions on specific backend servers but doesn,t involve SSL offloading.D. Source IP Preservation: This retains the client,s original IP address, not related to SSL termination or inspection.SSL Offload is a feature available in Network Load Balancers (NLBs) and Flexible Load Balancers (FLBs) in OCI. It allows the load balancer to handle the SSL encryption and decryption process, relieving your backend servers from this task. This can improve performance and reduce the workload on your servers.
Here,s how SSL Offload works:
The client establishes an SSL connection with the load balancer using the public HTTPS endpoint.
The load balancer decrypts the incoming traffic and terminates the SSL connection.
The load balancer forwards the unencrypted traffic to the chosen backend server.
The backend server processes the request and sends an unencrypted response back to the load balancer.
The load balancer encrypts the response and forwards it back to the client over the established SSL connection.
質問 # 22
Which VCN gateway type enables secure, private communication between your VCN and on-premises network using IPSec tunnels?
- A. Local Peering Gateway
- B. Dynamic Routing Gateway
- C. NAT Gateway
- D. Internet Gateway
正解：B
解説：
Local Peering Gateway: This gateway facilitates communication between VCNs within the same region, not with external networks like your on-premises network.
Internet Gateway: This gateway allows public internet access and wouldn,t provide the secure, private connection needed for IPSec tunnels.
NAT Gateway: This gateway only allows outbound traffic from your VCN to the internet and wouldn,t enable bi-directional communication with your on-premises network.
A DRG, however, serves as a central hub for routing traffic between your VCN and other networks, including on-premises networks. By establishing a Site-to-Site VPN connection with your on-premises VPN device and attaching it to the DRG, you can create a secure, encrypted tunnel using IPSec protocols for private communication.
質問 # 23
What is the role of a subnet in a VCN in OCI?
- A. It is a larger network that contains VCNs.
- B. It is a subdivision of a VCN.
- C. It is a separate network from a VCN.
- D. It is a network that operates independently of a VCN.
正解：B
解説：
B). It is a separate network from a VCN: Subnets are not separate networks; they are logical subdivisions within a single VCN.C. It is a larger network that contains VCNs: VCNs are the larger networks, and subnets are smaller divisions within them.D. It is a network that operates independently of a VCN: Subnets depend on and inherit configurations from their parent VCN. They cannot operate independently.Subnets within a VCN serve several key purposes:
Logical organization: They divide the VCN into smaller, more manageable segments, improving network organization and administration.
Security isolation: Resources within different subnets can have varying security policies and access controls, enhancing overall security posture.
Traffic control: Route tables associated with subnets define how traffic flows within the VCN and externally, offering granular control over communication paths.
Resource segmentation: By placing specific resources in designated subnets, you can optimize performance and simplify network management.
質問 # 24
How can you reserve a block of public IP addresses for future use?
- A. Allocate public IPs from a Public IP Pool and set them to "Reserved".
- B. Enable public IP auto-assignment for your VNICs.
- C. Configure a NAT Gateway with additional public IP addresses.
- D. Create a new subnet with a larger CIDR block.
正解：A
解説：
A). Create a new subnet with a larger CIDR block: This increases the pool of private IP addresses available within the subnet, but it doesn,t reserve specific public IPs for future use.B. Enable public IP auto-assignment for your VNICs: This automatically assigns dynamic public IPs to your instances, which is the opposite of reserving them.C. Configure a NAT Gateway with additional public IP addresses: This allows multiple instances to share a single public IP for outbound traffic, but it doesn,t reserve specific IPs for future use.Reserving public IP addresses from a Public IP Pool is the most common way to ensure specific IP addresses are available for future use. Most cloud providers offer this functionality, and the specific steps may vary slightly depending on the provider. However, the general process typically involves:
Accessing the Public IP Pool management interface: This is usually found within the networking section of your cloud provider,s console or API.
Selecting the desired number of IP addresses: Specify the number of public IPs you want to reserve.
Choosing a specific IP range (optional): In some cases, you may be able to choose a specific range of IP addresses from within the available pool.
Setting the IP addresses to "Reserved": This marks the selected IPs as unavailable for automatic assignment and ensures they are kept for your future use.
質問 # 25
For a highly available VCN, which is NOT required?
- A. Route tables with multiple next hops.
- B. Internet Gateways in each AD.
- C. Multiple Availability Domains (ADs).
- D. Private subnets in each AD.
正解：B
解説：
Here,s why:
Multiple Availability Domains (ADs): Having resources spread across multiple ADs ensures that a failure in one AD won,t impact the entire VCN. This is crucial for achieving high availability.
Route tables with multiple next hops: This allows for redundancy in routing paths, ensuring traffic can flow even if one path becomes unavailable.
Private subnets in each AD: Just like public resources, private resources like app and DB servers benefit from being distributed across ADs for fault tolerance.
Internet Gateways in each AD: While having one Internet Gateway per AD can improve performance and availability for public resources in that specific AD, it,s not strictly necessary for overall VCN high availability. You can have a single Internet Gateway serving the entire VCN, and route traffic appropriately based on your needs.
質問 # 26
For maximum security, how should you subnet a VCN with a public web server, private app server, and DB server?
- A. Single public subnet for web, single private for app & DB
- B. Separate public & private subnets for each server
- C. Overlapping public & private subnet address spaces
- D. All subnets in the same Availability Domain
正解：C
解説：
Isolation: This approach physically separates the public web server, which is directly accessible from the internet, from the private app and DB servers. This minimizes the attack surface and ensures that even if the web server is compromised, the internal servers remain secure.
Control: You can configure security lists for each subnet with specific ingress and egress rules, further restricting access to each server based on its specific needs.
Best Practices: This aligns with security best practices in cloud environments, where segmentation and isolation are fundamental principles.
Here are the drawbacks of the other options:
A) Single public subnet for web, single private for app & DB:
This exposes the app and DB servers indirectly through the web server, increasing the attack surface.
Granular control of network access becomes difficult.
B) Overlapping public & private subnet address spaces:
This creates unnecessary complexity and potential for misconfiguration.
It offers no clear security benefit compared to separate subnets.
D) All subnets in the same Availability Domain:
This increases the risk of a single event impacting all servers.
Availability is improved by placing servers in different Availability Domains and connecting them through private subnets across those domains.
質問 # 27
What is the primary function of dedicated endpoints in OCI?
- A. To provide a shared endpoint for all OCI customers.
- B. To increase data transfer speeds.
- C. To provide secure, tenancy-specific access to resources.
- D. None of the above.
正解：C
解説：
The primary function of dedicated endpoints in OCI is to provide secure, tenancy-specific access to resources.
Here,s why the other options are not correct:
A). To provide a shared endpoint for all OCI customers: This is incorrect. Dedicated endpoints are unique to each individual tenant, offering isolation and enhanced security.C. To increase data transfer speeds: While dedicated endpoints might indirectly improve performance due to potential security optimizations, their primary function is not focused on raw speed increases.D. None of the above: As explained earlier, dedicated endpoints are crucial for secure access within OCI.By offering unique and immutable endpoints for each tenant, dedicated endpoints significantly enhance security by:
Preventing accidental or malicious access: Each tenant,s resources are isolated, minimizing the impact of security incidents.
Reducing the attack surface: By eliminating shared endpoints, attackers have fewer potential targets to exploit.
Supporting stricter security policies: Organizations with stringent security requirements can leverage dedicated endpoints to meet their compliance needs.
質問 # 28
A security list rule is blocking inbound traffic to an instance in a public subnet. Which of the following OCI Networking tools can help you diagnose the issue?
- A. Route Tables
- B. Network Analytics
- C. Network Security Groups (NSGs)
- D. Service Gateway
正解：C
解説：
Route Tables: Define routing paths within your VCN, not specifically related to security rules blocking traffic.
Network Analytics: While offering insights into network traffic patterns, it wouldn,t pinpoint the specific security list rule causing the issue.
Service Gateway: Manages connections between OCI and other cloud providers or on-premises networks, not directly relevant to security list rules within a VCN.
Network Security Groups (NSGs): Are the primary mechanism for controlling inbound and outbound traffic to your resources in OCI. By examining the NSGs associated with the affected instance, you can:
Review security list rules: Identify the specific rule blocking the desired traffic, analyzing its source, protocol, port, and direction.
Test and troubleshoot: Temporarily disable or modify rules to isolate the problematic rule and confirm its impact.
Inspect logs: Analyze NSG logs for details about blocked traffic attempts, including source IP addresses and protocols.
Therefore, NSGs provide the most direct and relevant information for diagnosing and resolving issues related to security list rules blocking inbound traffic.
質問 # 29
Which technology is used if multicloud architecture needs dynamic routing between OCI and another cloud provider''s network
- A. Static BGP peering with manually configured routes.
- B. FastConnect Partner Peering with integrated BGP support.
- C. Cloud VPN with dynamic routing protocols like BGP.
- D. Dedicated Connection with dynamic routing capabilities.
正解：B
解説：
Here,s why the other options don,t offer the same level of dynamic routing:
A). Static BGP peering with manually configured routes: While BGP supports dynamic routing, manually configuring routes becomes impractical and error-prone for large-scale multicloud environments.B. Cloud VPN with dynamic routing protocols like BGP: While Cloud VPN can utilize BGP, it creates a centralized connection point that might become a bottleneck for large-scale multicloud routing, and managing its own infrastructure adds complexity.C. Dedicated Connection with dynamic routing capabilities: While some Dedicated Connections might offer dynamic routing features, it,s not a core functionality and managing multiple dedicated connections with dynamic routing can be complex.FastConnect Partner Peering:
Provides a dedicated, private connection between OCI and your chosen cloud provider,s network.
Automatically establishes BGP peering sessions, enabling dynamic routing exchange and efficient traffic flow based on network conditions and available paths.
Offers scalability and flexibility for multicloud environments with frequent traffic changes.
質問 # 30
Which FastConnect option offers the highest bandwidth and lowest latency?
- A. IPSec VPN
- B. Dedicated Circuit
- C. Cloud VPN
- D. Direct Peering
正解：B
解説：
Dedicated Circuit provides a physically dedicated fiber connection, offering the highest bandwidth (up to 100 Gbps) and lowest latency for critical applications.
Direct Peering leverages existing peering relationships with carriers, but bandwidth and latency depend on specific agreements.
Cloud VPN and IPSec VPN are virtual, shared connections with lower bandwidth and potentially higher latency.
質問 # 31
When configuring access control for your Bastion service, what BEST practice promotes the principle of least privilege?
- A. Grant all users in the "Administrators" group full access to the Bastion.
- B. Configure port forwarding on the Bastion to forward traffic directly to internal instances.
- C. Allow all users from the "Developers" group to connect to any internal resource through the Bastion.
- D. Assign specific users or groups SSH keys with access restrictions based on their specific needs.
正解：D
解説：
Here,s why the other options violate the principle of least privilege:
A). Granting all users in the "Administrators" group full access: This completely ignores the principle of least privilege, granting excessive and unnecessary access to sensitive resources.B. Allowing all users from the "Developers" group to connect to any internal resource: While providing group access might be efficient, granting access to all resources for an entire group still exceeds the minimum required permissions.D. Configuring port forwarding: This exposes internal instances directly, bypassing the Bastion,s access control and security benefits.Option C adheres to the principle of least privilege by:
Assigning access to specific users or groups: Restricts access to those who genuinely need it.
Using SSH keys: Provides a more secure authentication method compared to passwords.
Implementing access restrictions: Tailors permissions to each user,s specific needs, granting only the minimum required access to internal resources.
質問 # 32
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