Find the last usable IP in the subnet 1721628 Find the last

Find the last usable IP in the subnet 172.16.?.?/28

Find the last usable IP in the subnet 172.16.?.?/26

Dear Student..

here are the answers...

------------------------------------------------------------------------------------------------------------------------------------------

The given address 172.16..?.?/28 is a class B addresses.

The default subnet mask for class B = 255.255.0.0

Now in the given address we have borrowed 28 - 16 = 12 bits to create the subnetworks.

hence

total subnetworks = 2¹² = 4096

hosts per subnetworks = 2⁴ = 16 - 2 = 14

hence last usable IP for every subnet = 172.16.0.14

-----------------------------------------------------------------------------------------------------------------------------------------

The given address 172.16..?.?/26 is also class B addresses.

The default subnet mask for class B = 255.255.0.0

Now in the given address we have borrowed 26 - 16 = 10 bits to create the subnetworks.

hence

total subnetworks = 2¹⁰ = 1024

hosts per subnetworks = 2⁶ = 64 - 2 = 62

hence last usable IP for every subnet = 172.16.0.62

-------------------------------------------------------------------------------------------------------------------------------------------

Kindly Check and Verify Thanks...!!!