Which CIDR range is allowed for a VPC according to the material?

• A. Between /24 and /16
• B. Only /23
• C. Only /16
• D. Between /28 and /12

Answer: (A)

A VPC CIDR block is sized to provide enough private IP space while keeping address management practical. The material states you can choose a VPC CIDR block that falls within the range from /16 to /24. That means you can use any prefix length from /16 (65,536 IPs) down to /24 (256 IPs). This range gives flexibility: a /16 supports large deployments with many subnets, while a /24 works for smaller networks, and you can still carve smaller subnets inside the VPC. Blocks outside this window—whether larger like /12 or smaller than /24—aren’t covered as allowed in the material, so the move from /16 up to /24 is the intended scope.