POS 355 - WEEK 2 ASSIGNMENT + DQ'S 501

Write a 200- to 300-word short-answer response to the following:
 
How would you rank the principles of concurrency (mutual exclusion, synchronization, deadlock, starvation)? Explain the design issues for which the concept of concurrency is relevant
 
 
Write a 200- to 300-word short-answer response to the following:
 
Consider the past few days you have worked on a computer (work or home). What disk scheduling policies and algorithms were used? Explain.
 
 
·         Consider a system that supports 5,000 users. Suppose you want to allow 4,990 of those users to be able to access one file. How would you specify this protection scheme in UNIX®?
Also, suggest another protection scheme that can be used more effectively for this purpose than the scheme provided by UNIX®?
 
Format your paper consistent with APA guidelines.