What IPs are reserved in a VPC according to the material?

What IPs are reserved in a VPC according to the material?

• A. A few IPs in a VPC are reserved for infrastructure
• B. All IPs in a VPC are public
• C. No IPs are reserved
• D. Infrastructure IPs are assigned by external provider

Answer: (A)

In a VPC, not every IP in the address block can be assigned to devices. Some addresses are kept aside for the network’s own infrastructure—things like the gateway, DNS, DHCP, and other router or management functions. That means only a portion of the addresses are usable by hosts, while a few are reserved to keep the network functioning reliably. That’s why the material states that a few IPs in a VPC are reserved for infrastructure. The other choices imply that all IPs are usable, none are reserved, or that infrastructure addresses come from an external provider, which isn’t how typical VPC networking works.

In a VPC, not every IP in the address block can be assigned to devices. Some addresses are kept aside for the network’s own infrastructure—things like the gateway, DNS, DHCP, and other router or management functions. That means only a portion of the addresses are usable by hosts, while a few are reserved to keep the network functioning reliably. That’s why the material states that a few IPs in a VPC are reserved for infrastructure. The other choices imply that all IPs are usable, none are reserved, or that infrastructure addresses come from an external provider, which isn’t how typical VPC networking works.