Questions about two "reserved IP addresses"

johnifanx98

network address of all 0s: interpreted to mean "this network or segment."

network address of all 1s: interpreted to mean "all networks."

Under what circumstances are the above two used?

oli356

I'm confused, I think your on about the Network address and Broadcast address.

Say an IP address was: 192.168.1.1 with the subnet mask of 255.255.255.0 then the network would be 192.168.1.0. The last octet would therefore be all 0's in binary.
The broadcast address for this address would be 192.168.1.255, the last octet in binary would be 11111111.

You can't assign a host either of these IP addresses. The network IP represents the network and the broadcast address is used to send packets to every host on the subnet.