ANS-C01 Question 190
Single answerYou are managing a hybrid cloud environment with an on-premises data center and an AWS VPC. You need to dynamically exchange routing information between your on-premises network and AWS. Which of the following options would be the most appropriate solution?
- A
Set up a static route table in the AWS VPC with the on-premises network IP range.
- B
Configure BGP (Border Gateway Protocol) on the AWS Virtual Private Gateway and the on-premises router.
- C
Use AWS Direct Connect with a static routing configuration.
- D
Enable OSPF (Open Shortest Path First) on the AWS Virtual Private Gateway.
Show answer and explanation
Correct answer: B
Explanation
In a hybrid cloud setup where dynamic routing is required, BGP is the protocol supported by AWS Virtual Private Gateway for exchanging routing information between the on-premises network and AWS. It allows for automatic route propagation and adapts to network changes, ensuring reliable connectivity. Static routes and OSPF are not suitable in this case due to their limitations in AWS environments.
- A. Incorrect.
Static routes require manual configuration and do not dynamically update with network changes, making them unsuitable for dynamic routing needs in a hybrid environment.
- B. Correct.
BGP (Border Gateway Protocol) is the appropriate choice because it is supported by AWS Virtual Private Gateway and allows for dynamic exchange of routing information between AWS and on-premises networks.
- C. Incorrect.
AWS Direct Connect provides a dedicated connection but does not inherently support dynamic routing unless paired with a protocol like BGP.
- D. Incorrect.
AWS Virtual Private Gateway does not support OSPF; it only supports BGP for dynamic routing.