文件名称：CCNA 第四期 4-2答案
文件大小：751KB
文件格式：DOC
更新时间：2013-01-21 09:28:01
CCNA 第四期 4-2答案
Which two statements are true about time-division multiplexing (TDM)? (Choose two.) TDM relies on Layer 3 protocols to operate. Multiple sources can transmit over a single channel. Original data streams must be reconstructed at the destination. TDM methods vary depending on the Layer 2 protocol that is used. It allows information from multiple channels to be allocated bandwidth on multiple wires.