What are the advantages of classless addressing over classful addressing?
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CIDR provides numerous advantages over the “classful” addressing scheme, whether or not subnetting is used:Efficient Address Space Allocation: Instead of allocating addresses in fixed-size blocks of low granularity, under CIDR addresses are allocated in sizes of any binary multiple.
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Advantages of classless addressing over classful addressing:
- Classful addressing does not send subnet information.
- Efficient address-space allocation is available in classless addressing
- Memory is allocated in terms of bits and bytes rather than huge chunks of contiguous memory.
- It eliminates any class imbalances
- Routing entries are much more efficient
- There are no separate entities for subnetting.
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