[2025年03月05日] 合格率取得する秘訣は1Z0-1124-24認定試験エンジンPDF
1Z0-1124-24試験問題集合格できるには更新された2025年03月テスト問題集
質問 # 67
Which OCI offering should you use?WHEN a load balancer with Layer 4 (protocol-based) traffic distribution for a web application is needed
- A. Gateway Load Balancer
- B. Flexible Load Balancer with Application Load Balancer mode
- C. Application Delivery Director (ADC)
- D. Flexible Load Balancer with Network Load Balancer mode
正解：D
解説：
Here,s why the other options are not as good:
A). Application Delivery Director (ADC): While ADCs offer Layer 4 capabilities, they also support advanced Layer 7 functionalities like content switching and application-specific routing. These extra features come at a higher cost, which might be unnecessary if you only need Layer 4 load balancing.C. Flexible Load Balancer with Application Load Balancer mode: This mode specializes in Layer 7 (application-layer) load balancing, focusing on factors like URL paths, cookies, and headers. While it supports Layer 4 balancing as well, it,s overkill for your current need and might incur unnecessary costs.D. Gateway Load Balancer: This offering is currently in preview and not generally available. It,s designed for internet gateway-level load balancing, not within a public subnet for your web application.Flexible Load Balancer with Network Load Balancer mode: This configuration provides the perfect balance:
It leverages the Flexible Load Balancer,s core capabilities and cost-effectiveness.
It offers dedicated Network Load Balancer mode, specifically designed for high-throughput, low-latency, Layer 4 load balancing based on source IP address and port.
This is ideal for efficiently distributing traffic across your web servers without needing unnecessary Layer 7 features.
質問 # 68
Which of the following characteristics BEST describes FastConnect Dedicated Connection for migrating workloads to OCI?
- A. Secure, high-bandwidth, and low-latency connection
- B. Limited to specific regions and requires physical infrastructure on-premises.
- C. Provides lower bandwidth and higher latency compared to dedicated physical connections.
- D. Uses the public internet for routing, offering unpredictable performance.
正解：A
解説：
A). FastConnect Dedicated Connection establishes a private, physical connection between your on-premises network and OCI, bypassing the public internet. This ensures:Security: Data travels over a dedicated line, minimizing the risk of unauthorized access or interception.
High bandwidth: You can choose bandwidth options ranging from 1 Gbps to 100 Gbps, guaranteeing ample capacity for large data transfers.
Low latency: Direct connection minimizes network hops and reduces latency compared to internet-based options.
B). While available regions might vary, FastConnect Dedicated Connection is offered in multiple locations around the world. It requires on-premises equipment like a router, but not necessarily significant physical infrastructure changes.C. The dedicated connection avoids the public internet, ensuring consistent performance and security, unlike options relying on it.D. Compared to public internet connections, FastConnect Dedicated Connection offers significantly higher bandwidth and lower latency, making it ideal for large data transfers.
質問 # 69
What are the minimum configuration requirements for BGP peering between a DRG and an on-premises router?
- A. NAT Gateway and private IP addresses on both sides.
- B. IPSec tunnel with encryption and route reflectors.
- C. BGP neighbor configuration with router IDs and AS numbers.
- D. Public IP addresses on both sides and AS numbers.
正解：C
解説：
BGP Neighbor Configuration: This is the essential foundation for establishing a BGP peering session. You,ll need to configure neighbors on both the DRG and the on-premises router, specifying the other party,s router ID and Autonomous System (AS) number.
Router IDs and AS Numbers: These serve as unique identifiers for your BGP router and network, respectively. They are critical for establishing and maintaining the peering session.
Additional requirements, but not strictly minimum:
Private IP Addresses: While public IPs could technically work, using private IP addresses on both sides keeps traffic off the public internet, enhancing security.
IPSec Tunnel (Optional): Although not mandatory, an IPSec tunnel adds an extra layer of encryption and authentication to the BGP communication, further strengthening security.
Route Reflectors (Optional): If you have complex BGP network topologies, route reflectors can simplify route exchange and improve scalability.
Comparison with other options:
Public IP Addresses and AS Numbers (A): This exposes traffic to the public internet, compromising security and violating the principle of least privilege.
IPSec Tunnel and Route Reflectors (C): While secure and scalable, these are optional configurations and not minimum requirements.
NAT Gateway and Private IPs (D): NAT Gateways are not necessary for BGP peering and introduce unnecessary complexity.
質問 # 70
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. Assign specific users or groups SSH keys with access restrictions based on their specific needs.
- C. Allow all users from the "Developers" group to connect to any internal resource through the Bastion.
- D. Configure port forwarding on the Bastion to forward traffic directly to internal instances.
正解：B
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 # 71
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. Service Gateway
- B. Network Security Groups (NSGs)
- C. Network Analytics
- D. Route Tables
正解：B
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 # 72
For maximum security, how should you subnet a VCN with a public web server, private app server, and DB server?
- A. All subnets in the same Availability Domain
- B. Separate public & private subnets for each server
- C. Overlapping public & private subnet address spaces
- D. Single public subnet for web, single private for app & DB
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 # 73
Which OCI Networking tool facilitates traffic capture and analysis for in-depth troubleshooting?
- A. Network Security Group (NSG) Rules
- B. Service Gateway Logs
- C. VCN Flow Logs
- D. Virtual Test Access Point (VTAP)
正解：D
解説：
Service Gateway Logs: Capture logs related to service gateway operations, not detailed network traffic information.
VCN Flow Logs: Provide valuable flow data but capture only metadata about network traffic, not the actual packet contents.
Network Security Group (NSG) Rules: Focus on security policy enforcement, not capturing or analyzing traffic.
Virtual Test Access Point (VTAP): Offers advanced traffic capture capabilities specifically designed for detailed troubleshooting:
Captures full packet data: Allows deep inspection of individual packets, analyzing headers, protocols, and content.
Filtering and mirroring: Filter captured traffic based on specific criteria and mirror it to a designated target for analysis.
Real-time and offline analysis: Analyze captured traffic in real-time or store it for offline analysis with specialized tools.
質問 # 74
Which VCN gateway enables resources in your VCN to access the internet without exposing these resources to incoming internet connections?
- A. Service Gateway
- B. NAT Gateway
- C. Internet Gateway
- D. Dynamic Routing Gateway (DRG)
正解：B
解説：
Here,s why the other options are not correct:
Internet Gateway: This gateway allows both outbound and inbound traffic, meaning resources with public IP addresses will be exposed to the internet.
Service Gateway: This gateway facilitates communication with Oracle Cloud Infrastructure services within their network, not the public internet.
Dynamic Routing Gateway (DRG): This gateway primarily connects your VCN to other networks, including on-premises networks, but doesn,t provide direct internet access like the NAT Gateway.
質問 # 75
Which of the following resources CANNOT be used for transitive routing between a VCN and an on-premises network in OCI?
- A. Internet Gateway (IGW)
- B. Service Gateway (SGW)
- C. Local Peering Gateway (LPG)
- D. Dynamic Routing Gateway (DRG)
正解：A
解説：
Local Peering Gateway (LPG): This option enables local peering within a VCN but cannot connect directly to on-premises networks. However, it can be used alongside other resources like a DRG for establishing transitive routing to on-premises networks.
Service Gateway (SGW): This gateway facilitates connections between OCI VCNs and other cloud provider,s VPCs but not directly to on-premises networks.
Dynamic Routing Gateway (DRG): This is the primary gateway used for transitive routing between a VCN and on-premises networks. It establishes a central hub for routing traffic to on-premises networks through a connected on-premises VPN or FastConnect connection.
Internet Gateway (IGW): While IGWs allow outbound internet access from a VCN, they cannot route traffic towards private on-premises networks. They are not designed for establishing private connections, making them unsuitable for transitive routing to on-premises environments.
質問 # 76
For a highly available VCN, which is NOT required?
- A. Internet Gateways in each AD.
- B. Route tables with multiple next hops.
- C. Private subnets in each AD.
- D. Multiple Availability Domains (ADs).
正解：A
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 # 77
When creating a Service Gateway endpoint for inter-tenancy communication, what IAM policy statement best reflects the principle of least privilege?
- A. Grant specific resources in the source tenancy access to all resources in the destination tenancy.
- B. Allow all resources in the source tenancy access to all resources in the destination tenancy.
- C. Allow all resources in the source tenancy access to specific resources in the destination tenancy.
- D. Grant specific resources in the source tenancy access to specific resources in the destination tenancy.
正解：D
解説：
Here,s why the other options violate the principle of least privilege:
A). Allow all resources in the source tenancy access to all resources in the destination tenancy: This grants excessive access, exposing unnecessary resources and increasing the security risk.C. Allow all resources in the source tenancy access to specific resources in the destination tenancy: While better than Option A, it still grants broader access than necessary.D. Grant specific resources in the source tenancy access to all resources in the destination tenancy: This grants unnecessary access to all resources within the specific target resources in the destination tenancy.Option B is the most secure and adheres to the principle of least privilege by:
Specifying the source resources: Limiting access to specific resources in the source tenancy prevents any unauthorized access from other source resources.
Specifying the destination resources: Only granting access to the necessary resources in the destination tenancy minimizes attack surface and potential damage.
質問 # 78
Which OCI service helps ensure high availability and redundancy for inter-cloud connections in a multi-cloud environment?
- A. Oracle Cloud Infrastructure Route Tables
- B. Oracle Cloud Infrastructure FastConnect
- C. Oracle Cloud Infrastructure Service Gateways
- D. Oracle Cloud Infrastructure Data Transfer Service (DTS)
正解：C
解説：
FastConnect (A): While crucial for establishing dedicated, high-bandwidth connections between your on-premises network and OCI, it alone doesn,t provide redundancy or automatic failover for multi-cloud scenarios.
Data Transfer Service (DTS) (B): DTS facilitates moving large datasets between clouds but doesn,t directly address high availability and redundancy for ongoing inter-cloud connections.
Route Tables (D): These define routing paths within your VCN but lack redundancy features for multi-cloud connections.
Service Gateways address your specific needs with the following capabilities:
Redundancy: They offer automatic failover across multiple FastConnect circuits or public internet connections, ensuring uninterrupted traffic flow even if one connection fails.
High Availability: Service Gateways distribute traffic across available connections, preventing single points of failure and maintaining connection availability.
Multi-Cloud Support: They enable secure connections between OCI and other cloud providers through pre-configured peering arrangements or VPN tunnels.
質問 # 79
What type of storage does CloudShell offer for user data and scripts?
- A. No storage is available for user data or scripts in CloudShell.
- B. Local storage on the user,s device where they access CloudShell.
- C. Persistent storage with a 5GB quota accessible across sessions.
- D. Temporary storage that is deleted after the CloudShell session ends.
正解：C
解説：
CloudShell offers 5GB of persistent storage that you can access across different sessions within the same region. This means any files and scripts you store in your home directory will be there the next time you open a CloudShell instance in the same region.
Here,s a breakdown of the other options and why they are incorrect:
A). Temporary storage that is deleted after the CloudShell session ends. This is true for any files or data you create outside your home directory. But for your home directory itself, the storage is persistent.B. Local storage on the user,s device where they access CloudShell. CloudShell is a browser-based tool, so your data is not stored locally on your device.D. No storage is available for user data or scripts in CloudShell. This is incorrect, as CloudShell does offer persistent storage for your home directory data.
質問 # 80
Which of the following methods BEST SECURES communication between resources in separate OCI tenancies?
- A. FastConnect with private peering and Service Gateway endpoints
- B. Public IP addresses and direct internet connections
- C. Cross-tenancy VCN peering with full access
- D. VPN Connect tunnel with IPSec encryption
正解：A
解説：
A). Public IP addresses and direct internet connections: This method exposes resources to the public internet, increasing the attack surface and potential for vulnerabilities.B. VPN Connect tunnel with IPSec encryption: While more secure than direct internet connections, VPN tunnels still rely on the public internet for part of the data journey, introducing potential risks.C. FastConnect with private peering and Service Gateway endpoints: This option offers the highest level of security by:FastConnect: Creates a dedicated, private connection between your VCN and the other tenancy,s VCN, isolated from the public internet.
Private peering: Further restricts communication within the FastConnect connection to specific resources in each VCN.
Service Gateway endpoints: Provide controlled, secure access to specific resources in the other tenancy through predefined policies and managed services.
D). Cross-tenancy VCN peering with full access: While VCN peering offers secure communication, granting full access undermines the principle of least privilege and exposes more resources than necessary.
質問 # 81
Which OCI service facilitates automatic traffic failover to the secondary cloud in case of an outage?
- A. Configure public IP failover for resources in the secondary cloud.
- B. Implement Service Gateway with automatic failover routing options.
- C. Utilize FastConnect with automatic failover to the secondary OCI region.
- D. Designate the secondary cloud as an active-active configuration.
正解：C
解説：
Here,s why the other options don,t offer the same level of automated failover:
A). Configure public IP failover for resources in the secondary cloud: This requires manual intervention or complex automation to switch traffic to the secondary public IP in case of an outage.C. Implement Service Gateway with automatic failover routing options: Service Gateway can facilitate traffic routing across different cloud environments, but it requires specific configuration for automatic failover based on outage detection, which might not be supported by all providers.D. Designate the secondary cloud as an active-active configuration: This isn,t a practical solution for most scenarios due to potential conflicts and resource duplication across both clouds. It also doesn,t guarantee automatic failover if the outage affects the entire secondary cloud environment.FastConnect with automatic failover:
Provides a dedicated, private connection between your on-premises network or another cloud environment and OCI regions.
Offers the option to configure multiple FastConnect connections to different OCI regions.
When an outage occurs in the primary region, traffic automatically fails over to the secondary region,s connection, ensuring uninterrupted connectivity and minimal downtime.
質問 # 82
Which OCI solution promotes consistency and control?
- A. Establish IPSec VPN tunnels with custom policies for each connection.
- B. Configure separate security lists for each VCN connected to different clouds.
- C. Implement individual Service Gateway connections for each cloud provider.
- D. Leverage Oracle Cloud Infrastructure Cloud Control with Multicloud Networking.
正解：D
解説：
A). Implement individual Service Gateway connections for each cloud provider: This creates silos and complexity, hindering centralized management and consistency.B. Configure separate security lists for each VCN connected to different clouds: While offering some control, it involves managing multiple, disparate security policies, increasing vulnerability and potential inconsistencies.D. Establish IPSec VPN tunnels with custom policies for each connection: Similar to option B, this leads to individual, potentially disparate configurations, making it difficult to maintain unified control and security.
質問 # 83
To minimize downtime during a mission-critical application migration to OCI, which approach is most appropriate?
- A. Pilot migration: Migrate a small subset of users or functionality first, gradually migrating the rest.
- B. Blue-green deployment: Run the application simultaneously on both environments and switch traffic to OCI after testing.
- C. Lift and shift: Migrate the entire application without modifying its architecture or configuration.
- D. Cold cutover: Shut down the application and migrate all data and configuration at once.
正解：B
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 # 84
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