Most of the class A and class B
address were depleted how ever there was still a huge demand for mid size
blocks. In this super netting decrease the number of ones in the mask. But the
main disadvantages of super netting is, there is wastage of host computers, so
to overcome use CIDR (classless inter domain outing) notation. To overcome
address depletion to give more organization access to the internet, classless
addressing was designed and implemented. Here are no classes, but the addresses
are still granted in blocks.
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