ANS-C01 Question #210: Real Exam Question with Answer & Explanation

Question

A company has a transit gateway in AWS Account A. The company uses AWS Resource Access Manager (AWS RAM) to share the transit gateway so that users in other accounts can connect to multiple VPCs in the same AWS Region. AWS Account B contains a VPC (10.0.0.0/16) with subnet 10.0.0.0/24 in the us-west-2a Availability Zone and subnet 10.0.1.0/24 in the us-west-2b Availability Zone. Resources in these subnets can communicate with other VPCs. A network engineer creates two new subnets: 10.0.2.0/24 in the us-west-2b Availability Zone and 10.0.3.0/24 in the us-west-2c Availability Zone. All the subnets share one route table. The default route 0.0.0.0/0 is pointing to the transit gateway. Resources in subnet 10.0.2.0/24 can communicate with other VPCs, but resources in subnet 10.0.3.0/24 cannot communicate with other VPCs. What should the network engineer do so that resources in subnet 10.0.3.0/24 can communicate with other VPCs?

Options

• AIn Account B, add 10.0.2.0/24 and 10.0.3.0/24 as the destinations to the route table. Use the
• BIn Account B, update the transit gateway attachment. Attach the new subnet ID that is associated
• CIn Account A, create a static route for 10.0.3.0/24 in the transit gateway route tables.
• DIn Account A, recreate propagation for 10.0.0.0/16 in the transit gateway route tables.