DQ 1: What are the features of a good access control system? Where should access controls be used and who should manage them?

DQ 1: What are the features of a good access control system? Where should access controls be used and who should manage them?DQ 2: Outline the roles of packet-filtering routers and firewalls and how they protect a network.DQ 3: 1) Discuss Digital Certificates. 2) As a network manager would you rather have digital certificates or biometrics?