多项选择题
Which of the following describes the roles of devices in a WAN?（）
A. A CSU/DSU terminates a digital local loop.
B. A modem terminates a digital local loop.
C. A CSU/DSU terminates an analog local loop.
D. A modem terminates an analog local loop.
E. A router is commonly considered a DTE device.
F. A router is commonly considered a DCE device.
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相关考题
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多项选择题
Switch ports operating in which two roles will forward traffic according to the IEEE 802.1w standard?（）
A.alternate
B.backup
C.designated
D.disabled
E.root -
多项选择题
Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN?（）
A.HDLC
B.Ethernet
C.Token Ring
D.PPP
E.FDDI
F.Frame Relay -
多项选择题
A Catalyst 2950 needs to be reconfigured. What steps will ensure that the old configuration is erased?（）
A. Erase flash.
B. Restart the switch.
C. Delete the VLAN database.
D. Erase the running configuration.
E. Erase the startup configuration.
F. Modify the configuration register.
