为了保证IPv4向IPv6的平滑的演进，IETF推荐了哪几种演进方案？
为了保证IPv4向IPv6的平滑的演进，IETF推荐了哪几种演进方案？
相关考题：
IPv6 is short for“Internet Protocol Version 6”．IPv6 is the “next generation” protocol designed by the IETF to（ ）the current version Intemet Protocol，IP Version 4("IPv4”)． A．substitution B．swap C．switchover D．replace
Ipv6 is(71)for "Internet Protocol Version 6"。Ipv6 is the "next generation" protocol design by the IETF to(72)the current version Inernet Protocol, IP Version 4. Most of today's internet uses Ipv4, which is now nearly twenty years old. Ipv4 has been remarkably resilient in spite of its age, but it is beginging to have problems. Most importantly, there is a growing(73)of Ipv4 addresses, which are needed by all new machines added to the Internet. Ipv6 fixs a number of problems in Ipv4, shch as the(74)number of available Ipv4 addresses. It also adds many improvements to Ipv4 in areas such as souting and network autoconfiguration. Ipv6 is expected to gradually replace Ipv4, with the two coexing for a number of years during a transition(75)A.A．shortB．abbreviateC．abbreviationD．initial
IPv6 was developed by the （ ） to deal with the long-anticipated problem of IPv4 adderss exhaustion．A．ISO B．IEEE C．ITU D．IETF
IPv6 is short for "Internet Protocol Version 6". IPv6 is the "next generation" protocol designed by the IETF to(71) the current version Internet Protocol, IP version 4("IPv4").Most of today's internet uses IPv4, which is now more than twenty years old. IPv4 has been(72) resilient in spite of its age, but it is beginning to have problems. Most importantly, there is a growing(73) of IPv4 addresses, which are needed by all new machines added to the Internet. IPv6 fixes a number of problems in IPv4, such as the(74) number of available IPv4 addresses. It also adds many improvements to IPv4 in areas such as routing and network autoconfiguration. IPv6 is expected to gradually replace IPv4, with the two coexisting for a number of years during a transition(75) .A．substitutionB．swapC．switchoverD．replace
在从IPv4向IPv6过渡期间，为了解决IPv6主机之间通过IPv4网络进行通信的问题，需要采用（ ），为了使得纯IPv6主机能够与纯IPv4主机通信，必须使用（请作答此空）。A.双协议栈技术B.隧道技术C.多协议栈技术D.协议翻译技术
关于IPv6？地址描述不正确的是（）A、IPv6中自环地址为0：0：0：0：0：0：0：10B、IPv6地址为128位，解决了地址资源不足的问题C、IPv6地址中包容了IPv4地址，从而可保证地址向前兼容D、IPv4地址存放在IPv6地址的高32位
IPv6解决了主要问题是（）A、扩大了地址空间，提高了网络整体吞吐量B、包头采用定长结构，服务质量的改善C、支持不同的QoS机制，具有IPSec，保证安全性D、解决了IPv4和IPv6的融合和演进
NGN的战略发展方向包括（）。A、交换网向以软交换／IMS为核心的下一代交换网演进；B、下一代传输网向以光纤网为基础的ASON演进；C、下一代因特网向以IPv6为基础的因特网演进；D、移动网向以3G／E3G／B3G为代表的下一代移动通信网演进；
多选题IPV6解决了主要问题是：()A扩大了地址空间，提高了网络整体吞吐量B包头采用定长结构，服务质量的改善C支持不同的QOS机制，具有IPSEC，保证安全性D解决了IPV4和IPV6的融合和演进
多选题NGN的战略发展方向包括（）。A交换网向以软交换／IMS为核心的下一代交换网演进；B下一代传输网向以光纤网为基础的ASON演进；C下一代因特网向以IPv6为基础的因特网演进；D移动网向以3G／E3G／B3G为代表的下一代移动通信网演进；
单选题随着全业务发展要求下核心网的演进（）A独立发展B逐渐融合CHSS向HLR演进DHLR取代HSS