[单选题]A Next Generation Network(NGN) is a (上题选择) network ,which is able to provide Telecomunication Services ti users and to make use of multiple broadband, QoS-enable transport technologies and in which service-related functions are () of the underlying transport-related technologies.

正确答案 ：B

independent

[单选题]利用电话网铜线实现宽带传输的技术称为（）技术。

正确答案 ：A

DSL HFC AON PON

[单选题]预测消费者、用户在一定时期、一定市场范围内，有货币支付能力的需求，属于（ ）。

正确答案 ：B

市场需求预测

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