Which of the following should be used to ensure that all packets are received by every connecteddevice?（）
- A、Hub
- B、Router
- C、Switch
- D、Firewall
正确答案:A
答案解析:有
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CompTIA认证考试
CompTIA认证考试
Which of the following should be used to ensure that all packets are received by every connecteddevice?（）
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