AWS Certified Solutions Architect – Associate (SAA-C03) — Question 863

A company has primary and secondary data centers that are 500 miles (804.7 km) apart and interconnected with high-speed fiber-optic cable. The company needs a highly available and secure network connection between its data centers and a VPC on AWS for a mission-critical workload. A solutions architect must choose a connection solution that provides maximum resiliency.

Which solution meets these requirements?

Answer options

• A. Two AWS Direct Connect connections from the primary data center terminating at two Direct Connect locations on two separate devices
• B. A single AWS Direct Connect connection from each of the primary and secondary data centers terminating at one Direct Connect location on the same device
• C. Two AWS Direct Connect connections from each of the primary and secondary data centers terminating at two Direct Connect locations on two separate devices
• D. A single AWS Direct Connect connection from each of the primary and secondary data centers terminating at one Direct Connect location on two separate devices

Correct answer: C

Explanation

Option C offers the maximum possible resiliency by eliminating single points of failure across locations, devices, and connections. By establishing two AWS Direct Connect connections from both the primary and secondary data centers to two separate Direct Connect locations on two distinct devices, the architecture guarantees high availability even if an entire data center, Direct Connect location, or device fails. The other options are less resilient because they rely on a single data center, a single device, or a single Direct Connect location.