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You are here: Home / CompTIA / Network+ / Section I: Networking Concepts / Chapter 3: IP Addressing / IPv4 Addressing

IPv4 Addressing

This subject was introduced in Chapter 2. To recap, IPv4 addresses are 32-bit numbers represented as strings of zeros and ones. They are written in decimal notation (four groups of numbers, each number up to 255) but computers interpret them in binary notation (i.e., each group of decimal numbers is seen as a string of zeros and ones). The Layer 3 header contains a Source IP Address field and a Destination IP Address field. Each field is 32 bits in length.

To create a more intuitive representation of IPv4 addresses, the 32 bits can be divided into 4 . . .

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