IP Addressing
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| IP addresses are represented by a 32-bit unsigned binary value. It is usually expressed in a dotted decimal format. |
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| Here are some examples of IP addresses shown in dotted decimal form. |
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| 128.2.7.9 |
| 10.1.2.34 |
| 120.224.21.253 |
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| all IP addresses are 32 bits long and are comprised of four 8-bit segments known as octets. |
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| Representing IP addresses in dotted decimal notation makes them a lot easier to read than in the machine friendly binary format. |
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| The binary format of the IP address 128.2.7.2 is: |
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| 10000000 00000010 00000111 00000010 |
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| now you can easily decide which one is more readable and friendly. |
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| To identify a host on the Internet, each host is assigned an address, the IP address, or in some cases, the Internet address. |
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| When the host is attached to more than one network, it is called multi-homed and has one IP address for each network interface. |
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| The IP address consists of a pair of numbers: |
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| IP address = network number + host number |
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| For example, |
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| 128.2.7.2 is an IP address with 128.2 being the network number and 7.2 being the host number. |
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