Internet of Things (IoT) Practice Exam

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Prepare for your Internet of Things (IoT) Exam with engaging quizzes. Study IoT concepts through flashcards and multiple-choice questions, complete with hints and explanations. Master the IoT domain for your test success!

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What is the maximum number of possible IPv6 addresses?

2^32
2^64
2^128
2^256

The correct answer is: 2^128

IPv6, or Internet Protocol version 6, offers a vastly expanded address space compared to its predecessor, IPv4. One of the key features of IPv6 is its use of 128-bit addresses. This means that each IPv6 address is made up of 128 bits, enabling a huge number of possible unique addresses. To calculate the maximum number of possible IPv6 addresses, you raise 2 to the power of 128, which is mathematically represented as 2^128. This results in approximately 340 undecillion unique addresses (a number followed by 36 zeros), far exceeding the number of devices expected to be connected to the internet in the foreseeable future. This dramatic increase in the number of IP addresses is essential as it accommodates the rapid growth of internet-connected devices and the expansion of the Internet of Things (IoT). Hence, the choice of 2^128 accurately reflects the full capacity of reachable IPv6 addresses.