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Question: 1 / 655

What is the approximate number of addresses available in IPv4?

Approximately 340 trillion

Approximately 4.9 billion

In IPv4, addresses are represented by a 32-bit number, allowing for a theoretical maximum of \(2^{32}\) unique addresses. This calculation results in approximately 4.29 billion addresses. When considering practical allocation and usage of IPv4 addresses, this number roughly translates to about 4.9 billion available addresses.

The other choices present figures that do not align with the actual capabilities of the IPv4 addressing scheme. The figure of 340 trillion greatly exceeds the maximum possible addresses, while the numbers 200 billion and 65 thousand fall well below the actual capacity, misrepresenting the network's capability. The approximate 4.9 billion figure is the closest representation of the available addresses in the IPv4 protocol, making it the correct answer.

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Approximately 200 billion

Approximately 65 thousand

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