220-801 · Question #967
Which of the following is the number of bits that comprises an IPv6 address?
The correct answer is C. 128. An IPv6 address is 128 bits long, compared to the 32-bit length of IPv4. This larger address space allows for a vastly greater number of unique addresses.
Question
Which of the following is the number of bits that comprises an IPv6 address?
Options
- A32
- B64
- C128
- D256
How the community answered
(60 responses)- A3% (2)
- C95% (57)
- D2% (1)
Why each option
An IPv6 address is 128 bits long, compared to the 32-bit length of IPv4. This larger address space allows for a vastly greater number of unique addresses.
32 bits is the length of an IPv4 address, not IPv6.
64 bits represents only the network or interface identifier portion of an IPv6 address, not the full address length.
IPv6 addresses are 128 bits in length, represented as eight groups of four hexadecimal digits separated by colons. This 128-bit space provides approximately 3.4 x 10^38 unique addresses, designed to solve the IPv4 address exhaustion problem.
256 bits is not a standard IP address length for any current IP protocol version.
Concept tested: IPv6 address structure and bit length
Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/ipv6/ipv6-overview
Topics
Community Discussion
No community discussion yet for this question.