____- The goal is to provide a rapid, composed and effective response in emergency situations, thereby enhancing the ability of the business to recover immediately from a disruptive event.[fill in the blank]*

Network devices are managed by deploying SNMP protocol in the network. When an abnormality occurs in the network device, the administrator will receive () message.

When AntiDos statistics detect attack traffic, it will divert the attack traffic to the cleaning device.
After the cleaning device completes cleaning, it will inject the traffic back to the original link. Which of the following options does not belong to the back-injection method?

Under the control of external users, attacking network security by stealing local information or gaining control of the local machine belongs to which of the following attacks?

Which of the following options belongs to Layer 2 VPN technology?