The broadcast address for a class C network will always end in 255, in other words the fourth octet of the IP address will always be 255 (assuming your using classful addresses). For example, the broadcast address of the 192.168.1.0 /24 network is 192.168.1.255
That would be 192.168.32.255
192.168.10.31 is the broadcast address for this Subnet
The address before the next valid network address will be the broadcast address For Example:192.168.1.64 the broadcast address is 192.168.1.127
The network address for 192.168.1.157 255.255.255.0
172.16.70.47
Since this is a Class C address, the default network mask is 255.255.255.0.Since this is a Class C address, the default network mask is 255.255.255.0.Since this is a Class C address, the default network mask is 255.255.255.0.Since this is a Class C address, the default network mask is 255.255.255.0.
When you set up a sub network you decide upon the subnet mask and this determines the network address (all zeros in the subnet portion of the address) and the broadcast address (all ones in the subnet portion of the address). When you assign the host addresses in your subnet, then you use the addresses between the network address and the broadcast address.
10.56.176.0 is your network. 255.255.240.0 is your subnet mask. Valid broadcast addresses would be 10.56.176.255 (network broadcast) and 255.255.255.255 (general network broadcast). The general network broadcast would actually broadcast to every machine on the internet, but internet routers will block all traffic from it to prevent this. In effect if you use either 10.56.176.255 or 255.255.255.255, the result is broadcasting to all machines on your network.
broadcast address
This is easy to calculate due to the mask used. The network address would be 10.10.10.0 and the broadcast address would be 10.10.10.255.
172.16.70.47
77777
local network broadcast