单项选择题
A.Pretending to be a technical manager over the phone and asking a receptionist to change their password
B.While surfing the web，sending to a web server a malformed URL that causes the system to consume 100 percent of the CPU
C.Intercepting network traffic by copying the packets as they pass through a specific subnet
D.Sending message packets to a recipient who did not request them，simply to be annoying
单项选择题 Some adversaries use DoS attacks as their primary weapon to harm targets，whereas othersmay use them as weapons of last resort when all other attempts to intrude on a target fail. Which of the following is most likely to detect DoS attacks？（）
单项选择题 Which of the following types of access control seeks to discover evidence of unwanted，unau-thorized，or illicit behavior or activity？（）
单项选择题 Brazil′s Amazon rainforest is（）with life that could yield raw materials for new medicines.