Network Broadcast Address overlap with Subnet Broadcast Address I am still a beginner to subnetting, so please forgive the basic nature of the doubt. When a network is subdivided into a subnet, won't the network broadcast address be the same as the last subnet's broadcast address. For example, in the subnet 192.168.10.240/28, the broadcast address is 192.168.10.255. This is the same as the broadcast address of the whole network with network ID 192.168.10.0. Please help me understand this.

When you divide a network into smaller subnets, you no longer have the original network. Cut a piece of cake in half and you have two pieces of cake. The whole cake no longer exists. So it makes no sense to talk about the original network broadcast address.