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单项选择题Deploying ISRs with integrated security services can help lower the total cost of ownership. Which of these Cisco ISR Routers features illustrate this point?()

A、 using built-in on-board VPN acceleration to reduce the amount of VPN configuration tasks

B、 using the USB port to perform fast Cisco lOS image upgrade

C、 using the security audit feature to implement inline Intrusion Prevention System

D、 using the SDM configuration tool to reduce training costs

E、 using the high performance AIM to increase the Cisco lOS Firewall performance

  • D
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