Which of the following is the correct description of a firewall?

A$.$ software that deletes viruses from attachments

B$.$ hardware that prevents unauthorized data from entering a private network

C$.$ a software and hardware combination that limits incoming and outgoing Internet traffic

D$.$ a concept used in developing security policiesWhich of the following is the correct description of a firewall?

A$.$ software that deletes viruses from attachments

B$.$ hardware that prevents unauthorized data from entering a private network

C$.$ a software and hardware combination that limits incoming and outgoing Internet traffic

D$.$ a concept used in developing security policiesWhich of the following is the correct description of a firewall?

A$.$ software that deletes viruses from attachments

B$.$ hardware that prevents unauthorized data from entering a private network

C$.$ a software and hardware combination that limits incoming and outgoing Internet traffic

D$.$ a concept used in developing security policies