Database operation records can be used as ___ evidence to backtrack security events.[fill in the blank]*

Please match the following malicious code categories and descriptions[fill in the blank]

in deploymentIPSec VPN, which of the following is the main application scenario of tunnel mode?

want to implement security policy"Anti-virus function", must beLicenseactivation.

In the PKI system architecture, _______ is the CA's window to users, and is an extension of CA's certificate issuance and management functions. He is responsible for accepting users' certificate registration and revocation applications, reviewing employees' identity information, and deciding whether to apply for certificate registration and revocation. The CA submits an application to issue or revoke a digital certificate.