Which three statements about firewall modes are correct？ （）
- A、 A firewall in routed mode has one IP address
- B、 A firewall in transparent mode has one IP address
- C、 In routed mode， the firewall is considered to be a Layer 2 dew
- D、 In routed mode， the firewall is considered to be a Layer 3 device
- E、 In transparent mode， the firewall is considered to be a Layer 2 device
- F、 In transparent mode， the firewall is considered to be a Layer 3 device
正确答案:A,D,E
答案解析:有
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