Which statement about an IPS is true？（）
A. The IPS is in the traffic path.
B. Only one active interface is required.
C. Full benefit of an IPS will not be realized unless deployed in conjunction with an ID
D. When malicious traffic is detected，the IPS will only send an alert to a management station.
查看答案
道口自动信号由工务段负责安装和维护。（）
A. 正确
B. 错误
Which of the following are key characteristics of PPP?（）
A. can be used over analog circuits
B. maps Layer 2 to Layer 3 address
C. encapsulates several routed protocols
D. supports IP only
E. provides error correctio
交换机是给煤气、空气和废气气流换向的设备。。
A. 正确
B. 错误
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