network questions ?

and more explanation please

are the first and last assignable IP addresses in my subnet? 6. (6 points) Company A has been allocated the Class B address block 177.248.0.0/16. Internally, they want to break this address block into 32 subnets of equal size. (sec slides 21, 57-61 in 2IP Subnetting) a) What Subnet Mask should be used on internal devices to achieve this? What power of 2 is greater than or equal to 32? That is 2" = 32? What is the value of n? Using slide 21, the Network Prefix is the first 16 bits (188.253), the subnet ID uses the next n bits, and the host ID uses the remaining bits (32-16-n). Initial prefix subnet mask=/16 or 256.255.0.0 Size of initial subnet - 2032-16) = 216 = 65,536 IP addresses Number of new subnets = 16 =24 I New prefix length = 16+ 4 = /20 New subnet mask = 255.255.240.0 b) Out of these 32 subnets, list the Subnet ID of any 2 subnets and the first and last valid host address in each of these 2 subnets. The subnet ID bits increment by 1 to identify the next subnet. For example, if the subnet ID field uses 3 bits, then the subnet IDs are 000,001,010,011, 100, 101, 110 and 111 i.e., 0-7 in decimal). Recall that the first address in a subnet is the subnet address (all zeroes in host ID) and the last is the broadcast address (all ones in host |ID). c) Size of each new subnet = 2032-24-3) = 29 = 32