After the network intrusion event occurs, according to the plan to obtain the identity of the intrusion, the attack source and other information, and block the intrusion behavior, which links of the above actions are involved in the PDRR network security model? (Multiple Choice)

Which of the following attacks can DHCP Snooping prevent? (Multiple Choice)

Which of the following statements are correct about the business continuity plan? (Multiple Choice)

Which of the following does not include the steps of the safety assessment method?

Regarding the description of the packet in the iptables transmission process, which of the following option is wrong?