单项选择题
A.dictionary
B.bit-flip and replay
C.mac spoofing
D.man-in-the-middle
多项选择题 Wheninstallingaciscowcs，whichtwoportscanbechangedduringinstallation？（）
单项选择题 Wlseusessnmpcommunicationwithanethernetswitchforwhatpurpose？（）
单项选择题 Using the wlse,you are trying to push out a configuration job to an access point,but the job does not start. Which of the following would cause this failure？（）