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IPV4 vs IPV6 This lesson discusses the differences between IPV4 and IPV6 relative to format. AN IPV4 is a 32-bit address scheme, meaning it has 32 binary bits of data which are divided into four octets (sets of 8). This provides us with 4 billion addresses which should be enough, in theory. However, now we are running out with so many devices that connect to the Internet. That's where IPV6 comes in, which provides us with a 128-bit address which provides trillions of addresses. Participants also learn about hexadecimals to determine binary values for IPV6 addresses.