Computer Architecture - Memory

[joe111]

Can someone help me with my assignment please

3 (a) Two core ideas in operating systems are multiprogramming and

timesharing/ multitasking. What does each of these ideas entail? What

is the main motivation behind their introduction?

(4 marks)

(b) What are the different methods of passing system call parameters to

the operating system? What are their respective advantages and

disadvantages?

(6 marks)

© Given five memory partitions of 100 KB, 500 KB, 200 KB, 300 KB, and

600 KB (in order), how would each of the first-fit, best-fit, and worst-fit

algorithms place processes of 212 KB, 417 KB, 112 KB, and 426 KB (in

order)? Which algorithm makes the most efficient use of memory?

(7 marks)

(d) What is the cause of thrashing? How does the system detect

thrashing? Once it detects thrashing, what can the system do to

eliminate this problem?

(3 marks)

[Phi for All]

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