1Z0-1123-25 Question 26
Single answerYour organization is migrating a mission-critical analytics application from an on-premises data center to Oracle Cloud Infrastructure (OCI). The application requires secure, dedicated network connectivity with consistent high throughput to handle large data volumes. Additionally, it must integrate seamlessly with on-premises systems to avoid network disruptions during and after the migration. Which OCI connectivity option best meets these requirements?
- A
Establish an IPSec VPN connection over the public internet
- B
Use Oracle Cloud Infrastructure FastConnect with a private virtual circuit
- C
Route traffic through a NAT Gateway in your OCI Virtual Cloud Network
- D
Rely on local VCN peering between two OCI regions
Show answer and explanation
Correct answer: B
Explanation
For large-scale, mission-critical workloads that demand secure, dedicated, and high-performance connectivity between on-premises resources and OCI, Oracle Cloud Infrastructure FastConnect with a private virtual circuit is the recommended approach. It provides consistent low latency and guaranteed bandwidth for data-intensive applications. Refer to Oracle� FastConnect documentation (https://docs.oracle.com/en-us/iaas/Content/Network/Concepts/fastconnect.htm) for details on setup, architecture, and best practices.
- A. Incorrect.
Option 1: IPSec VPN is suitable for smaller-scale or less sensitive workloads, but performance can vary due to internet congestion, making it less ideal for large-volume, mission-critical data transfers requiring dedicated throughput and lower latency.
- B. Correct.
Option 2: FastConnect with a private virtual circuit provides a dedicated, high-bandwidth connection with predictable throughput and low latency. It integrates seamlessly with on-premises networks and is ideal for transferring large data volumes securely and reliably, which makes it the correct choice here.
- C. Incorrect.
Option 3: A NAT Gateway is used to give private instances access to the internet without exposing them publicly. It does not provide a dedicated, high-performance link from on-premises to OCI, so it does not satisfy the requirements for large-scale data transfer.
- D. Incorrect.
Option 4: Local VCN peering is used to connect virtual cloud networks within the same region or across regions through remote peering. It does not address connectivity from on-premises environments to OCI, so it is not the right choice for this scenario.