In binary notation, a subnet mask is represented by four octets, just like an IP address.
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The following table shows the binary notation of the default subnet masks used in the class-based method. |
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When you use the binary notation of a subnet mask, you can change 32 numbers instead of the four numbers in the decimal notation. This improved capability provides a wider range of network sizes compared to the three fixed sizes in the class-based method.
Decimal notation Binary notation
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