Among the following options, which attack is a malformed packet attack based on the TCR protocol?

For the basic mode of HTTP Flood Source authentication, which of the following are the correct descriptions? (Multiple choices)

UDP is a connectionless protocol. A large number of UDP flood attacks cause the performance of network devices that rely on session forwarding to be degraded and even the session table is exhausted, causing network congestion.
Which of the following options does not prevent UDP flood attacks?

Which of the following options is not a feature of Trojan horses?

Which of the following options is not a cyber security threat caused by weak personal security awareness?