A firewall is either software or dedicated hardware that exists between the network and the resource being protected. this network security device monitors traffic to or from the network. It is based on set of rules about what data packets will be allowed to enter or leave a network.
A. both allow user to stay current with the latest information.
The correct answer to your question is:
Professional programmers work directly with, and interview customers to find out what the problem is.
Answer:
I think is None of this ,
