Your company has just set up a new central server in a VPC. There is a requirement for other teams who have their servers located in different VPC’s in the same region to connect to the central server. Which of the below options is best suited to achieve this requirement.

Answer options:

A.Set up VPC peering between the central server VPC and each of the teams VPCs.
B. Set up AWS DirectConnect between the central server VPC and each of the teams VPCs.
C.Set up an IPSec Tunnel between the central server VPC and each of the teams VPCs.
D.None of the above options will work.

Answer – A
A VPC peering connection is a networking connection between two VPCs that enables you to route traffic between them using private IPv4 addresses or IPv6 addresses. Instances in either VPC can communicate with each other as if they are within the same network. You can create a VPC peering connection between your own VPCs, or with a VPC in another AWS account within a single region.
VPC peering needs to have the basic functionality that the CIDR’s should not overlap, hence option D is wrong.
For more information on VPC Peering please see the below link:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/vpc-peering.html