Exam AWS-SysOps topic 1 question 883 discussion

it should be A For critical production workloads that require high resiliency, it is recommended to have one connection at multiple locations. As shown in the figure above, such a topology ensures resilience to connectivity failure due to a fiber cut or a device failure as well as a complete location failure. You can use Direct Connect Gateway to access any AWS Region (except AWS Regions in China) from any AWS Direct Connect location. https://aws.amazon.com/directconnect/resiliency-recommendation/

AWS Direct Connect is a dedicated network connection from an on-premises data center to AWS. Option A proposes setting up two 10 Gbps AWS Direct Connect connections at two Direct Connect locations. This allows for redundancy and high availability by using two customer routers and setting up dynamically routed, active/active connections. Active/active connections ensure that both connections are actively used, providing load balancing and fault tolerance.

Maximum resilience is achieved by separate connections terminating on separate devices in more than one location. This configuration offers customers maximum resilience to failure. As shown in the figure above, such a topology provides resilience to device failure, connectivity failure, and complete location failure. You

should be A, reason: highly robust and fault resistant. B is not backup plan

Answer should be B. Reason being: 1) A secondary region is already there as mentioned in question. 2)Now setting up a new direct connect for new region would work but it would be costly, less efficient and less resilient as its an individual connection (there is no mention of making each connection resilient in any options) 3)Direct Connect Gateway is a good option to connect with different regions (multi-region) with reduced costs and increased resiliency Please go through this blog and the question once again. https://aws.amazon.com/blogs/networking-and-content-delivery/influencing-traffic-over-hybrid-networks-using-longest-prefix-match/

The company needs a consistent, low-latency connection of at least 10 Gbps == directConnect that must be highly resilient and fault tolerant == HA connection == 2 actives connections == 2routers

direct connect gateway is ideal choice here, as we need to consider multiple VPC connectivity this link give good diff between DC and DCG https://medium.com/@datapath_io/aws-direct-connect-vs-vpn-vs-direct-connect-gateway-97900cdf7d04#:~:text=Direct%20Connect%20allowed%20AWS%20users,multiple%20AWS%20regions%20or%20VPCs. Answer : B

A is not valid. You can't setup a Direct Connect at 2 DX locations. If you setup 2 DX connections it can works but costly. B is correct answer.

B https://docs.aws.amazon.com/directconnect/latest/UserGuide/direct-connect-gateways-intro.html https://medium.com/@datapath_io/7-things-you-need-to-know-about-aws-direct-connect-gateway-7deb1d6c7b85

Correct Answer: A

Answer is B. "You can use Direct Connect Gateway to access any AWS Region" https://aws.amazon.com/directconnect/resiliency-recommendation/?nc1=h_ls