Internet Service Provider Grant to Block Address I need to answer those questions below and show the simple steps:
6. An ISP is granted the block 80.70.56.0/21. The ISP needs to allocate addresses for one organization with 200 addresses, one organization with 100 addresses, and one organization with 50 addresses. [For all parts of this question, assume the address blocks include addresses where the host ids are all zeros and all ones.]
a. How many addresses are in the ISP’s original block?
b. What are the first and last addresses in the ISP’s original block?
c. For the block of 200 addresses, what is the length of the net id?
d. For the block of 200 addresses, what are the first and last addresses in the block? Assume the first address of the block is the first address in the ISP’s block.
e. For the block of 100 addresses, what is the length of the net id?
f. For the block of 100 addresses, what are the first and last addresses in the block? Assume the first address of the block is the next available address after the 200 address block.
g. For the block of 50 addresses, what is the length of the net id?
h. For the block of 50 addresses, what are the first and last addresses in the block? Assume the first address of the block is the next available address after the 100 address block.
i. How many addresses from the ISP’s original block are unallocated after the above blocks are assigned?
7. An ISP is granted the block 204.15.176.0/20. The ISP needs to allocate the following sub-blocks:
o 3 subblocks of 1000 address
o 2 subblocks of 500 addresses
Design the subblocks using variable length subnet masks.
