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An ISP has CIDR block 204.192.224.0/21. The ISP wants to create 64 sub-blocks from this block. a) How many bits should the ISP add to

An ISP has CIDR block 204.192.224.0/21. The ISP wants to create 64 sub-blocks from this block.

a) How many bits should the ISP add to the mask for the sub-blocks?

b) List the first address and mask (include slash notation) for the first 9 sub-blocks?

c) What is the maximum number of valid hosts in each sub-block?

d) If I want 3 subnets in each sub-block how does the subnet mask change? Show it as dotted decimal.

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