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下列有关ISL（Inter Subrack Link）的描述哪个（些）是正确的？（）
- A、MGW机箱之间ATM信元传送通过ISL电缆来完成，ISL分为控制链路（control link）和应用链路（application link）
- B、ISL电缆可以连接主机箱（或Central Processor ModulE.与扩展机箱，也可以实现两个扩展机箱之间的互联
- C、每块SCB和SXB板都可提供4个主用的ISL接口与其它机箱进行互联
- D、在ISL上包含TUB产生的系统时钟和从ET板上提取出来的参考时钟
参考答案
更多 “下列有关ISL（Inter Subrack Link）的描述哪个（些）是正确的？（）A、MGW机箱之间ATM信元传送通过ISL电缆来完成，ISL分为控制链路（control link）和应用链路（application link）B、ISL电缆可以连接主机箱（或Central Processor ModulE.与扩展机箱，也可以实现两个扩展机箱之间的互联C、每块SCB和SXB板都可提供4个主用的ISL接口与其它机箱进行互联D、在ISL上包含TUB产生的系统时钟和从ET板上提取出来的参考时钟” 相关考题
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单选题Under which circumstance will a branch ISR router contain interface vlan configurations?（）A
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单选题What is a characteristic of ISL and 802.1q frame tagging in a switched LAN environment?（）A
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