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  3. 【In the forthcoming years，Beyond一3G(B3G)environments will undoubtedly be deployed in most parts around the globe，permitting a wo

【In the forthcoming years，Beyond一3G(B3G)environments will undoubtedly be deployed in most parts around the globe，permitting a wo

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问题 【In the forthcoming years，Beyond一3G(B3G)environments will undoubtedly be deployed in most parts around the globe，permitting a world class solution for network interconnection．AB3G context enables the efficient cooperation of existing wireless technologies，including cellular-based(e．g．2G／3G)，broadcast—oriented(e．g．DVB)一in specific DVB—H，and Internet—based(WLAN／WMAN)networks，all relying on enhanced IP as the unifying layer．Hence，in this particular and yet to be deployed environment，mobile systems and platforms will permit to provide enhanced services to all applications across heterogeneous access networks．This will effectively enlarge the scope of service deployment，availability and accessibility to the users．】
Based on the paragraph above，it is shown that(98)will be used as the higher layer protocol to unify cellular networks，broadcast networks and(99) networks，which is enabled by the context of(100)．
(99)
选项 A、Internet-based
B、WLAN
C、WMAN
D、B3G
答案A
解析
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