The cisco ironport portfolio performs which service?()
- A、reduces the downtime that is as assocoated with spam,viruses,and blended threats that are delivered via email
- B、defends the penmeter from malicious users and unauthorized traffic
- C、provides A secure communication path through the internet
- D、determines if A user or device is authorized to access A switch port
正确答案:A
答案解析:有
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