The account authority of an employee of a company has expired, but the account can still be used to access the company's server. Which security risks are the above scenarios? (Multiple choice)

When we use digital signature technology, the receiver needs to use the sender's ( ) to unlock the digital signature to get the digital fingerprint. (fill in the blank)

deployIPSec VPNIn tunnel mode, useAHprotocol for packet encapsulation. NewIPIn the header field of the packet, which of the following parameters does not need to be checked for data integrity?

Which of the following statements about investigation and evidence collection is correct?

hen deploying dual-system hot backup on the firewall, in order to switch the overall state of the VRRP backup group, which of the following protocols is required?