问题
单项选择题
According to covering scope, which three classes can computer network be divided ( )
A.PSN, LAN, WAN
B.MAN,LAN,WAN
C.PSN, FAST Ethernet, LAN
D.PSN, FAST Ethernet, MAN
答案
参考答案:B
According to covering scope, which three classes can computer network be divided ( )
A.PSN, LAN, WAN
B.MAN,LAN,WAN
C.PSN, FAST Ethernet, LAN
D.PSN, FAST Ethernet, MAN
参考答案:B