CompTIA
220-801 · Question #176
220-801 Question #176: Real Exam Question with Answer & Explanation
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
Explanation
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.
Common mistakes.
- B. IPv6 is not backwards compatible with IPv4 devices and requires transition mechanisms such as dual-stack or tunneling to interoperate with legacy infrastructure.
- C. IPv6 does not inherently reduce security concerns; it introduces new attack surfaces and requires updated security tooling and configurations.
- D. 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
Reference. https://learn.microsoft.com/en-us/windows-server/networking/technologies/ipv6/ipv6-overview
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