A.The switch has some security functions, and some switches can realize more security functions by adding a security board

B.Routers can implement some security functions, and some routers can implement more security functions by adding security boards

C.The switch does not have security functions

D.The main function of the router is to forward data. When the company has security requirements, sometimes a firewall may be a more suitable choice.

A.All possible accidents are thought not to be predicted, so BCP needs to be flexible

B.Not all safety incidents must be reported to the company's senior management

C.The business continuity plan does not require the participation of the company's senior management before it is formally documented

D.The business continuity plan does not require the participation of the company's senior management during the project scope stage

A.False

B.True

A.Local certificate

B.Self-signed certificate

C.Terminal certificate

D.Device local certificate

A.Receiver's private key

B.User data

C.Receiver's public key

D.Symmetric key