255.255.254.0
^^note that for 255.255.254.0, the first two number sets. i.e 255.255, each 255=11111111, the third number set 254=11111110, while 0=00000000
^^^ so final binary is 11111111.11111111.11111110.00000000, so there are 9 open 0s on right, and 2^9 = 512, so there are a range of 512 IPs available
255.255.254.0
^^note that for 255.255.254.0, the first two number sets. i.e 255.255, each 255=11111111, the third number set 254=11111110, while 0=00000000
^^^ so final binary is 11111111.11111111.11111110.00000000, so there are 9 open 0s on right, and 2^9 = 512, so there are a range of 512 IPs available
status | not learned | measured difficulty | 37% [default] | last interval [days] | |||
---|---|---|---|---|---|---|---|
repetition number in this series | 0 | memorised on | scheduled repetition | ||||
scheduled repetition interval | last repetition or drill |