In (4), information from each data channel is allocated band width based on the signal frequency of the traffic. In(5),bandwith is dynamically allocated to any data channels that have information to transmit (1)A B a single da C data and physical D. a single physical (2)A.dsimultiplexing B demultiplexed C demultiplexer D demultiplexed 3)A Physical Layer B Network LayerC. link Layer DTransport Layer (4)ATMD B FDM C ATDM D WDM (5)A time-division multiplexing B. frequency-devision multiplexing C code-division multiplexing D statistical multiplexing 答案: ACABD3 In _(4)_ ,information from each data channel is allocated bandwidth based on the signal frequency of the traffic.In _(5)_,bandwith is dynamically allocated to any data channels that have information to transmit. (1)A.a single data or physical B.a single data C.data and physical D. a single physical (2) A.dsimultiplexing B. demultiplexed C. demultiplexing D. dsimultiplexed (3) A.Physical Layer B.Network LayerC. link Layer D.Transport Layer (4)A.TMD B.FDM C. ATDM D. WDM (5)A.time-division multiplexing B.frequency-devision nultiplexing C. code-division multiplexing D. statistical multiplexing 答案：ACABD