单选题下面对IP Over ATM 具有的优点描述不正确的一项是（）A由于ATM技术本身能提供QoS保证，因此可提高IP业务的服务质量B具有良好的流量控制均衡能力以及故障恢复能力，网络可靠性高C适应于多业务，具有良好的网络可拓展能力D对其他几种网络协议不提供支持
单选题
下面对IP Over ATM 具有的优点描述不正确的一项是（）
A
由于ATM技术本身能提供QoS保证，因此可提高IP业务的服务质量
B
具有良好的流量控制均衡能力以及故障恢复能力，网络可靠性高
C
适应于多业务，具有良好的网络可拓展能力
D
对其他几种网络协议不提供支持
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