Chapter2 Physical Layer--Transmission media【含答案】 计算机网络 Computer Networks

(1)单选题

Compare Optical fibers with copper wires

A  Optical fibers are heavier than copper wires

B  Copper wires can provide higher bandwidth

C  Optical fibers suffer from interference

D  Optical fibers are widely used for backbone networks

(2)单选题

Compare with UTP and COAX

A  UTP is more expensive

B  UTP is more prone to noises

C  COAX requires more boosts

D  COAX is eayier to install

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未经允许不得转载!Chapter2 Physical Layer--Transmission media【含答案】 计算机网络 Computer Networks