Q1) What password protection measures are normally implemented by system administrators, operating systems, and security services? Describe the pros and cons of enabling audits of resource accesses. What is a virus? How can users and system administrators prevent virus infections? Why is it important to install operating system and application software updates in a timely manner? How can users and system administrators ensure that they are installed in a timely manner? Describe various firewall types and how each can improve system security. What information does a system administrator need to configure a firewall correctly? Why are conventional methods of fire protection inadequate or dangerous for computer equipment? What problems associated with electrical power must be considering in planning the physical environment of computer hardware?