Which of the following expansion cards would be necessary to increase fault tolerance in a VoIP server?（）
- A、Second Modem
- B、Second CPU
- C、Second HBA
- D、Second PBX card
正确答案:D
答案解析:有
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CompTIA认证考试
CompTIA认证考试
Which of the following expansion cards would be necessary to increase fault tolerance in a VoIP server?（）
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