أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
we have the IP address...0 / his mask is / (...0)
using the new mask / (...) so we add4 bits to the mask / (- =4 bits)
the number of subnet can be gained is2 ^4 = subnet
remain5 bits for the host part
Therefore the number of machine by subnet is
2 ^5-2 =-2 = hosts