Oracle Cloud Infrastructure 2020 Architect Professional — Question 43

A retail company has recently adopted a hybrid architecture. They have the following requirements for their end-to-end connectivity model between their on- premises data center and Oracle Cloud Infrastructure (OCI) region.
✑ Highly available connection with service level redundancy
✑ Dedicated network bandwidth with low latency
Which connectivity setup is the most cost-effective solution for this scenario? (Choose the best answer.)

Answer options

• A. Setup FastConnect virtual circuit as your primary connection, and an IPSec VPN as a backup connection. Use separate edge devices in your on-premises data center for each connection. From your edge devices, advertise more specific routes through FastConnect virtual circuit, and less specific routes through the backup IPSec VPN path.
• B. Setup IPSec VPN as your primary connection, and a FastConnect virtual circuit as a backup connection. Use separate edge devices in your on-premises data center for each connection. From your edge devices, advertise more specific routes through IPSec VPN, and less specific routes through the backup FastConnect virtual circuit.
• C. Setup FastConnect virtual circuit as your primary connection, and a second FastConnect virtual circuit as a backup connection. Make sure your FastConnect physical connectivity is redundant. Use a single edge device in your on-premises data center for each connection. From your edge device, advertise more specific routes via primary FastConnect virtual circuit, and less specific routes through the backup FastConnect virtual circuit.
• D. Setup IPSec VPN as your primary connection, and a second IPSec VPN as a backup connection. Use separate edge devices in your on-premises data center for each connection. From your edge devices, advertise more specific routes via primary IPSec VPN, and less specific routes through the backup IPSec VPN.

Correct answer: A

Explanation

Option A is the most cost-effective solution because it combines the reliability of a FastConnect virtual circuit with the backup of an IPSec VPN, ensuring high availability and low latency. The other options either rely solely on IPSec VPNs, which may not provide the same level of performance, or suggest multiple FastConnect circuits, which can be more expensive without added benefit in this scenario.