单选题Which of the following would an attacker use to footprint a system？（）ARADIUSBPassword crackerCPort scannerDMan-in-the-middle attack
单选题
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
参考解析
解析：
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