VPC Peering

Question 1

What is VPC Peering?

Answer 1

VPC peering is simply a connection between two VPCs that enables you to route traffic between them using private IP addresses.

Question 2

For VPC Peering, instances in either VPC can communicate with each other…

Answer 2

…as if they are within the same network.

Question 3

How can you create a VPC peering connection?

Answer 3

Between…

1. Your own VPCs, or
2. With a VPC in another AWS account within a single region.

Question 4

How does AWS create a VPC peering connection?

Answer 4

AWS uses the existing infrastructure of a VPC

Question 5

T/F: VPC Peering connections are gateways.

Answer 5

False

Question 6

T/F: VPC Peering connections are VPN connections.

Answer 6

False

Question 7

Does VPC Peering rely on a single piece of hardware?

Answer 7

No

Question 8

Is there a single point of failure for communication or a bandwidth bottleneck?

Answer 8

No

Question 9

T/F: VPC peering can occur between VPCs in different regions.

Answer 9

False; VPC peering must occur between VPCs within a single region.

Question 10

Example: If VPC A and VPC B were peered, and VPC A’s CIDR = 10.0.0.0/16 and VPC B’s CIDR = 10.0.0.0/24, what will happen to the connection?

Answer 10

It will not work since VPCs with matching or overlapping CIDRs cannot be peered.

Question 11

Transitive Peering…

Answer 11

…is NOT supported!