same thing for this to

You are designing a subnet mask for the 172.27.0.0 network. You want 30 subnets with up to 2000 hosts on each subnet. What subnet mask should you use?

subnets you take the left bits and hosts are the right most bits

11111111 1111111 0000000 0000000 etc

you know if you want 30 subnets your closest option is the 32 bit as the next 1 up is 64 and that is to many.

just write out the third octet of zeros and treat each zero as 2 and go

0 x 0 = 4 x 0 = 8 x 0 = 16 x = 32

how many bits is that ? 6 bits from the left which is

255.255.248.0

as you borrowed 6 to the power of 2 bits in the THIRD octet

you will pick it up so quick in the vids trust me

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