Question: A. Research current literature to discover the current state of IEEE POSIX Standards and list several UNIX operating systems that are currently 100 percent POSIX-compliant. Explain the significance of compliance. Explain why you think a popular UNIX operating system might choose not to be compliant.
B. Explore the issues surrounding UNIX security. Specifically, identify major threats to systems running UNIX and list the steps system administrators must take to protect the system from unauthorized access. Compare the practical problems when balancing the need for accessibility with the need to restrict access. Finally, suggest the first action you would take to secure a UNIX information system if you managed one.