单项选择题

在关于①Ethernet②Token Bus⑨ATM LAN④FDDI⑤Token Ring的组合中，属于共享介质局域网的是 (9) 。

A．①②③④
B．①②④⑤
C．②⑧④⑤
D．①③④⑤
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单项选择题
The standard (IEEE 802)format for printing (72) in human-friendly form is six groups of two hexadecimal digits，separated by hyphens(-) or colons(:)，in transmission order, e.g.01-23-45-67-89-ab，01:23:45:67:89:ab．This form is also commonly used for EUI-64．
A．hard disk logical block address
B．IP address
C．mail address
D．MAC address
单项选择题
A（）is used to communicate with another computer over telephone lines.

A. Keyboard
B. Modem
C. Mouse
D. Printer
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