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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.