An IP address is a unique number / address used to identify a device on a network. An IP address is made up of 32 binary bits, which is divided into a Network portion and Host portion with the help of a Subnet Mask.
The 32 binary bi
The 32 binary bi
ts are broken into four octets (1 octet = 8 bits). Each octet is converted to decimal and separated by a period (dot). For this reason, an IP address is expressed in dotted decimal format (for example, 192.168.10.12). The value in each octet ranges from 0 to 255 decimal, or 00000000 - 11111111 binary.
Below is how binary octets are converted to decimal: The right most bit, or least significant bit, of an octet holds a value of 20. The bit just to the left of that holds a value of 21. This continues until the left-most bit, or most significant bit, which holds a value of 27. So if all binary bits are a one, the decimal equivalent would be 255 as shown here:
1 1 1 1 1 1 1 1
128 64 32 16 8 4 2 1 = (128+64+32+16+8+4+2+1=255)
And this sample below shows an IP address represented in binary and decimal.
192. 168. 4. 10 (decimal)
11000000.10101000.00000100.00001010 (binary).
Below is how binary octets are converted to decimal: The right most bit, or least significant bit, of an octet holds a value of 20. The bit just to the left of that holds a value of 21. This continues until the left-most bit, or most significant bit, which holds a value of 27. So if all binary bits are a one, the decimal equivalent would be 255 as shown here:
1 1 1 1 1 1 1 1
128 64 32 16 8 4 2 1 = (128+64+32+16+8+4+2+1=255)
And this sample below shows an IP address represented in binary and decimal.
192. 168. 4. 10 (decimal)
11000000.10101000.00000100.00001010 (binary).
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