Question

First address in block can be found by setting rightmost 32- n bits to

Answer 1

you can make a program in which you can code bit no 32

Answer 2

First address in block can be found by setting rightmost 32- n bits to 0s.

How do you determine a block's first address?

Set the 32 - n is the rightmost bits of the address's binary notation to 0s to find the first address in the block.

• A block of addresses in IPv4 addressing is defined as x.y.z.t /n, where x.y.z.t is one of the addresses and the /n is the mask.
• Setting the rightmost 32 n bits to 0s yields the first address in the block.
• Setting the rightmost 32 n bits to 1s will yield the block's last address.
• The formula $2^{32} -n$ can be used to calculate the number of addresses in a block.

As a result, the rightmost 32-n bits can be set to 0s to find the first address in the block.

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