Please help with the question below If the IP address for Device-A is: 172.255.17.30/21 and Device-B is: 172.255.31.30/21. Are these devices on the

Please help with the question below

If the IP address for Device-A is: 172.255.17.30/21 and Device-B is: 172.255.31.30/21. Are these devices

on the same subnet or on different subnets? What is/are the subnet address/addresses?