Which of the following would an attacker use to footprint a system？（）
- A、RADIUS
- B、Password cracker
- C、Port scanner
- D、Man-in-the-middle attack
正确答案:C
答案解析:有
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CompTIA认证考试
CompTIA认证考试
Which of the following would an attacker use to footprint a system？（）
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