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Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q73-Q78):
NEW QUESTION # 73
Your company has a FastConnect circuit established between your on-premises data center and OCI.
However, you have a specific regulatory requirement to encrypt all traffic, even over dedicated connections like FastConnect. You need to implement IPSec encryption without significantly impacting the available bandwidth of your FastConnect circuit. Which is the most effective approach to implement IPSec encryption over your existing FastConnect circuit, while maintaining high bandwidth?
Answer: B
Explanation:
* Requirements:Encrypt FastConnect traffic with minimal bandwidth impact.
* IPSec Options:
* DRG VPN:Native OCI solution over FastConnect.
* Firewall Appliances:Adds overhead and complexity.
* Compute Instances:Resource-intensive, not scalable.
* Internet VPN:Uses public internet, against requirements.
* Evaluate Options:
* A:DRG VPN with AES-GCM (low-overhead encryption) leverages FastConnect; optimal.
* B:Firewalls with AES-256 add overhead, reducing bandwidth; less effective.
* C:Compute-based VPN is inefficient and public-facing; unsuitable.
* D:Public internet VPN violates privacy requirement; incorrect.
* Conclusion:DRG VPN with AES-GCM is the most effective solution.
OCI supports IPSec over FastConnect via DRG. The Oracle Networking Professional study guide explains,
"A Site-to-Site VPN over FastConnect using the DRG provides encrypted traffic with low-overhead algorithms like AES-GCM, maintaining high bandwidth" (OCI Networking Documentation, Section:
FastConnect with VPN). This meets regulatory and performance needs efficiently.
NEW QUESTION # 74
Your company uses OCI Certificates to manage SSL/TLS certificates for its public-facing applications. You need to implement a solution that automatically renews these certificates before they expire to avoid service disruptions. Which OCI Certificates feature or configuration best achieves this?
Answer: A
Explanation:
* Goal:Automate certificate renewal in OCI Certificates.
* Feature Check:OCI Certificates supports automatic renewal.
* Evaluate Options:
* A:Manual renewal risks disruption; inefficient.
* B:Automatic Renewal with DNS validation automates process; best fit.
* C:Vault stores secrets, no renewal automation; incorrect.
* D:False; OCI Certificates has auto-renewal; incorrect.
* Conclusion:Automatic Renewal is the optimal feature.
OCI Certificates offers automated renewal. The Oracle Networking Professional study guide states, "Enable the 'Automatic Renewal' option in OCI Certificates and configure DNS validation to ensure certificates are renewed before expiration, preventing disruptions" (OCI Networking Documentation, Section: OCI Certificates). This leverages OCI's built-in automation.
NEW QUESTION # 75
Which of the following is a disadvantage of using a public internet-based VPN connection for migrating large datasets from another cloud provider to OCI?
Answer: A
Explanation:
* Objective: Identify a VPN disadvantage for large dataset migration.
* Option A: VPNs can be secure with IPSec; not inherently less secure-incorrect.
* Option B: VPNs are automatable with IaC (e.g., Terraform)-incorrect.
* Option C: Public internet limits VPN throughput due to bandwidth and latency variability-correct disadvantage.
* Option D: VPNs are compatible with OCI services-incorrect.
* Conclusion: Option C is the key disadvantage.
Oracle notes:
* "Public internet-based VPNs face throughput limitations due to bandwidth and latency variability, impacting large data migrations."This supports Option C. Reference:VPN Limitations - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.htm#limitations).
NEW QUESTION # 76
You are designing a highly available web application in OCI. You've created a VCN with two public subnets across different Availability Domains (ADs). You need to enable IPv6 support for the application to cater to a growing number of IPv6-only clients. You plan to use a Load Balancer to distribute traffic to backend compute instances in the public subnets. Which of the following approaches ensures the highest level of resilience and IPv6 connectivity for your application?
Answer: A
Explanation:
* Requirements: HA and IPv6 support for public web app.
* Option A: ULA is private, not routable; NAT for IPv6 is inefficient-incorrect.
* Option B: ULA doesn't support public IPv6 clients-incorrect.
* Option C: Public IPv6 CIDR is correct, but IPv4-only LB with NAT lacks direct IPv6-less resilient.
* Option D: Public IPv6 CIDR with dual-stack LB and instances ensures full IPv6 support and HA across ADs-correct.
* Conclusion: Option D maximizes resilience and connectivity.
Oracle states:
* "For public IPv6 applications, use a public IPv6 CIDR block and configure Load Balancers and instances for both IPv4 and IPv6 to ensure resilience."This supports Option D. Reference:IPv6 in OCI - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingIPv6.htm).
NEW QUESTION # 77
You are designing a highly available application that requires low latency communication between OCI regions. You have two VCNs, VCN-A in Region 1 and VCN-B in Region 2. These VCNs have non- overlapping CIDR blocks and you want to establish a private, direct connection between them for optimal performance. Which of the following steps are necessary to establish this cross-region connectivity using the native OCI networking capabilities?
Answer: D
Explanation:
* Requirements: Private, low-latency cross-region VCN connectivity.
* Option A: RPCs with route table updates enable private, direct peering via DRG-correct.
* Option B: IPSec VPN adds latency over internet-incorrect.
* Option C: Service Gateways are for OCI services-incorrect.
* Option D: NAT Gateways use public IPs, not private-incorrect.
* Conclusion: Option A is necessary.
Oracle states:
* "Use Remote Peering Connections (RPCs) with DRG to connect VCNs across regions privately.
Update route tables for CIDR routing."This supports Option A. Reference:Remote VCN Peering - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/remoteVCNpeering.htm).
NEW QUESTION # 78
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