) how many bits are used for host number on the child network (subnet) , b) how many usable addresses can exist on this child network (subnet) , c) what the first usable address is on this child network (subnet) , d) what the last usable address is on this child network (subnet) , e) what the child network’s (subnet's) broadcast address is , and f) what the child network's (subnet's) network number is . Machine’s IP=126.127.85.170, Machine’s Netmask=/27, Parent’s Netmask=255.255.240.0 .