Paper 1 · ICT
UGC NET December 2021 June 2022 (21.09.2022) Shift-I
In IPv6, an address is given by eight 16-bit numbers usually written in hexadecimal. As printed, how many unique addresses does IPv6 support overall?
A2 to the power 16
B2 to the power 64
C65536
D655368 ✓ Correct
Correct answer: (D) 655368 — The marked answer, as printed, is the last option.
Explanation
★The marked answer, as printed, is the last option.
★IPv6 uses a 128-bit address, so it truly supports 2 to the power 128 addresses.
★That is about 3.4 times ten to the power 38 addresses in all.
★The printed options do not include this correct value and are garbled.
★Among the given choices the key marks the last option.
★So the marked answer is the last option.
★The genuinely correct count is 2 to the power 128.
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