VPC

Question 1

What are the default configurations for a VPC?

Answer 1

• a /16 IPv4 CIDR block
• a /20 default subnet for the Regions’ Availability Zones
• an internet gateway
• a default route to the internet gateway
• a default security group (allows no inbound, allows all outbound)
• a default network ACL
• a default Dynamic Host Configuration Protocol (DHCP) option set

Question 2

What are the max number of VPC peering connections allowed in an AWS account?

Answer 2

125

Question 3

Does VPC peering support transitive connections?

Answer 3

No
If VPC A is peered to VPC B and VPC B is peered to VPC C, it will not allow transitive peering from VPC A to VPC C