Want this question answered?
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
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.
77777
172.16.70.47
The general rule in networking is that the network id cannot be all zeroes or all ones, and the host id cannot be all zeroes or all ones. The all zero address results in a reserved address meaning "this network". The all ones address is a broadcast address, and cannot be assigned to a single system.
local network broadcast
Answer: 172.31.47.255