Question $1$: Write examples of applications or use cases for both client$-$server computing and peer$-$to$-$peer computing, and briefly explain the key differences between these two computing paradigms.

Question $2$: Explain the difference between concurrency and parallelism in computer OS$,$ and give an example of each.

Question $3$: What are the three main mechanisms used by operating systems to protect data integrity?

Question $4$: A file is a collection of related data that is stored on a computer. What are the two main components of a file name?

Question $5$: Compare and contrast the logical view and physical view of a file, and explain the difference between sequential access and random or relative access.