Question #1087
A solutions architect is designing a hybrid cloud solution for a company that needs to integrate its on-premises data center with AWS. The solution must ensure high availability with minimal latency for primary traffic and use a cost-effective backup that can handle reduced throughput if the primary fails. Which combination of connectivity options meets these requirements?
Use AWS Direct Connect for primary connectivity and configure a site-to-site VPN as a backup.
Deploy two site-to-site VPN connections with equal priority for load balancing and redundancy.
Implement two AWS Direct Connect connections in different locations for active-active redundancy.
Utilize AWS Site-to-Site VPN as the primary connection with Direct Connect as the backup.
Explanation
Answer A is correct because:
- AWS Direct Connect offers a dedicated, private network connection with minimal latency, making it ideal for primary traffic requiring high availability.
- Site-to-Site VPN is a cost-effective backup option via the public internet. While it has higher latency and lower throughput than Direct Connect, it provides redundancy at a lower cost.
Why other options are incorrect:
- B: Two VPNs lack the low-latency requirement for primary traffic and do not prioritize cost-effectiveness.
- C: Two Direct Connect connections are expensive and do not align with the need for a cost-effective backup.
- D: Using VPN as the primary connection introduces latency, violating the minimal latency requirement.
Key Points:
1. Direct Connect ensures low-latency, high-throughput primary connectivity.
2. Site-to-Site VPN is a cost-effective backup but with reduced throughput.
3. Hybrid architectures often combine dedicated (Direct Connect) and internet-based (VPN) connections for redundancy.
Answer
The correct answer is: A