多项选择题
What are two security appliances that can be installed in a network?（）
A.ATM
B.IDS
C.IOS
D.IOX
E.IPS
F.SDM
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相关考题
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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. -
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
