220-801 · Question #176
Which of the following is an advantage of an IPv6 network?
The correct answer is A. Virtually unlimited number of network addresses. The primary advantage of IPv6 is its 128-bit address space, which provides approximately 3.4 x 10^38 unique addresses - a virtually unlimited supply compared to IPv4's 32-bit space.
Question
Which of the following is an advantage of an IPv6 network?
Options
- AVirtually unlimited number of network addresses
- BBackwards compatible with all network devices and operating systems
- CLess security concerns
- DHigher available speed
How the community answered
(38 responses)- A95% (36)
- B3% (1)
- D3% (1)
Why each option
The primary advantage of IPv6 is its 128-bit address space, which provides approximately 3.4 x 10^38 unique addresses - a virtually unlimited supply compared to IPv4's 32-bit space.
IPv6 uses 128-bit addresses compared to IPv4's 32-bit addresses, producing 2^128 (approximately 340 undecillion) unique addresses. This effectively eliminates address exhaustion and removes the need for NAT in most deployments.
IPv6 is not backwards compatible with IPv4 devices and requires transition mechanisms such as dual-stack or tunneling to interoperate with legacy infrastructure.
IPv6 does not inherently reduce security concerns; it introduces new attack surfaces and requires updated security tooling and configurations.
IPv6 is a network-layer addressing protocol and does not directly increase transmission speed; speed is determined by the physical and data-link layers.
Concept tested: IPv6 advantages - expanded address space
Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/ipv6/ipv6-overview
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