An engineer creates a custom VPC (10.50.0.0/16) and an Internet Gateway (IGW). They immediately try to attach the IGW to a newly created subnet (10.50.1.0/24). Why does the AWS Management Console/CLI throw an error?
Step 1: Host bits
32 − 28 = 4
Step 2: Total IP addresses
(2^4 = 16)
Step 3: AWS reserved IPs
5 IP addresses.
Step 4: Usable IPs
16 − 5 = 11
Final Answer: 11 EC2 instance