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350-501 · Question #622
350-501 Question #622: Real Exam Question with Answer & Explanation
The correct answer is A: It enables networks to pass encapsulated IPv4-in-IPv6 traffic over the ISP backbone.. DS-Lite (Dual-Stack Lite) is a transition mechanism that enables ISPs to connect IPv4-only subscribers to the IPv4 Internet over an IPv6-only core network.
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Question
What is the purpose of DS-Lite technology?
Options
- AIt enables networks to pass encapsulated IPv4-in-IPv6 traffic over the ISP backbone.
- BIt allows network administrators to implement shared IPv4 addresses between the ISP and its
- CIt allows an ISP to service IPv6 networks over an IPv4-enabled ISP backbone.
- DIt allows network administrators to transition a network to IPv6 while maintaining IPv4 support.
Explanation
DS-Lite (Dual-Stack Lite) is a transition mechanism that enables ISPs to connect IPv4-only subscribers to the IPv4 Internet over an IPv6-only core network.
Common mistakes.
- B. While DS-Lite involves shared IPv4 addresses, its primary purpose is not just to allow shared IPv4 addresses, but specifically to facilitate IPv4-in-IPv6 encapsulation over an ISP backbone.
- C. DS-Lite enables IPv4 networks over an IPv6 backbone, not IPv6 networks over an IPv4 backbone; that scenario would typically use 6to4 or similar mechanisms.
- D. DS-Lite is a specific IPv4-over-IPv6 tunneling solution, not a general method for transitioning a network to IPv6 while maintaining IPv4 support, which is a broader concept that includes dual-stack.
Concept tested. DS-Lite technology purpose
Topics
#DS-Lite#IPv6 transition#Encapsulation#Service Provider Networking
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