试题详情
- 单项选择题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
- D
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A、 Second Modem
B、 Second CPU
C、 Second HBA
D、 Second PBX card
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