Which of the following should Karen, a technician, use to test a parallel port?（）
- A、Line tester
- B、Multimeter
- C、Null modem cable
- D、Loopback plugs
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 should Karen, a technician, use to test a parallel port?（）
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