单选题
The integrated services routing architecture provides the performance， availability， and reliabilityneeded to scale mission-critical business applications in the most demanding environments.Which statement best describes the benefits of Cisco Integrated Services Routers？（）
发布日期：2021-11-15
A
ISRs provide threat defense against attacks from hackers and viruses that can occur in thenetwork.
B
ISRs provide the framework to integrate and extend wired and wireless networks
C
ISRs provide concurrent security， voice， data， wireless， and application optimization services.
D
ISRS provide the common fabric， functionality， and CLI across the network.
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