LX0-104 · Question #673
How many bits make up an IPv6 address?
The correct answer is D. 128. An IPv6 address is a 128-bit numerical label used to identify a network interface of a computer or other network node participating in an IPv6 computer network.
Question
Options
- A32
- B48
- C64
- D128
- E256
How the community answered
(42 responses)- A2% (1)
- B2% (1)
- C7% (3)
- D86% (36)
- E2% (1)
Why each option
An IPv6 address is a 128-bit numerical label used to identify a network interface of a computer or other network node participating in an IPv6 computer network.
32 bits is the length of an IPv4 address, not an IPv6 address.
48 bits is not a standard length for either IPv4 or IPv6 addresses.
64 bits is typically the length of the network prefix or the interface identifier part of an IPv6 address, but not the entire address.
IPv6 addresses are designed to be 128 bits long, providing a vast address space to accommodate the growing number of internet-connected devices and overcome the limitations of IPv4's 32-bit addresses.
256 bits is not a standard length for either IPv4 or IPv6 addresses.
Concept tested: IPv6 address length
Source: https://www.ietf.org/rfc/rfc2460.txt
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