“三好”指()设备。
A. 管好
B. 保养好
C. 用好
D. 维修好
Theinternetaddress198.102.27.120representswhichofthefollowingaddresses?()
A. ClassA
B. ClassB
ClassC
D. ClassD
Whichofthefollowingadaptersshouldbeconnectedtocoaxialcablingwithouttheuseofmediaconverters?()
AdapterwithAUIconnector
B. AdapterwithBNCconnector
C. AdapterwithRJ-45connector
D. AdapterwithDB-25connector