A、loCAl ArEA nEtwork (lAn) is thE CommuniCAtion oF A numBEr oF ComputErs By (68) ConnECting to EACh onE in A singlE loCAtion, usuAlly A singlE Floor oF A BuilDing or All thE ComputErs in A smAll CompAny.
A、linE
B．CABlE
C．CoppEr
D．CoppEr CAsh