The following description of the intrusion fire protection system IPS, which is correct?
When the Layer 2 switch receives a unicast frame and the MAC address table entry of the switch is empty, the switch discards the unicast frame.
What type of ACL does ACL number 3001 correspond to?
DES is a stream encryption algorithm, because the cipher capacity is only 56 bits, so it is not enough to deal with the weakness of insufficient security, and later 3DES was proposed.
Which of the following attack methods is to construct special SQL statements and submit sensitive information to exploit program vulnerabilities