An administrator in your company has created a VPC with an IPv4 CIDR block 10.0.0.0/24. Now they want to add additional address space outside of the current VPC CIDR. Because there is a requirement to host more resources in that VPC. Which of the below requirement can be used to accomplish this? Choose an answer from the below options.

Answer options:

A.You cannot change a VPC`s size. Currently, to change the size of a VPC, you must terminate your existing VPC and create a new one.
B.Expand your existing VPC by adding secondary IPv4 IP ranges (CIDRs) to your VPC.C.Delete all the subnets in the VPC and expand the VPC.D.Create a new VPC with a greater range and then connect the older VPC to the newer one.

Answer – B
An existing CIDR for a VPC is not modifiable. However, you can add additional CIDR blocks, i.e., up to four secondary IPv4 CIDR blocks to an already existing VPC.Option A is incorrect because you can change the CIDR of VPC by adding up to 4 secondary IPv4 IP CIDRs to your VPC.Option B is CORRECT because you can expand your existing VPC by adding up to four secondary IPv4 IP ranges (CIDRs) to your VPC.Option C is incorrect because deleting the subnets is unnecessary.
Option D is incorrect because this configuration would peer the VPC. It will not alter the existing VPC’s CIDR.
For more information on VPC and its FAQs, please refer to the following links-
https://aws.amazon.com/about-aws/whats-new/2017/08/amazon-virtual-private-cloud-vpc-now-allows-customers-to-expand-their-existing-vpcs/
https://aws.amazon.com/vpc/faqs/