IPv6 addresses are 128 bits long.

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Multiple Choice

IPv6 addresses are 128 bits long.

Explanation:
IPv6 uses 128-bit addresses. This fixed size was chosen to give an enormous address space, far beyond what IPv4 offers. With 128 bits, there are 2^128 possible unique addresses—about 3.4 x 10^38—which accommodates huge growth in devices and enables flexible addressing and auto-configuration features. An IPv6 address is typically written as eight groups of four hexadecimal digits, separated by colons, and can be shortened using standard notation rules (like omitting leading zeros or collapsing consecutive zeros). Because the length is defined by the protocol, it does not vary or depend on other factors.

IPv6 uses 128-bit addresses. This fixed size was chosen to give an enormous address space, far beyond what IPv4 offers. With 128 bits, there are 2^128 possible unique addresses—about 3.4 x 10^38—which accommodates huge growth in devices and enables flexible addressing and auto-configuration features. An IPv6 address is typically written as eight groups of four hexadecimal digits, separated by colons, and can be shortened using standard notation rules (like omitting leading zeros or collapsing consecutive zeros). Because the length is defined by the protocol, it does not vary or depend on other factors.

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