A.Block

B.Delete attachments

C.Alarm

D.Declare

A.IP spoofing attack

B.IP address scanning attack

C.Smurf attack

D.ICMP redirect attack

A.Different interfaces of the switch send and receive data independently.

B.Layer 2 switches rely on the MAC address table to forward data

C.Layer 2 switches work at the data link layer

D.The MAC address table stores the mapping relationship between MAC addresses and switch ports.
Unless deleted manually, it will exist permanently.

A.True

B.False

A.Symmetric encryption

B.Partially symmetric encryption

C.Data encryption

D.Fingerprint encryption