Operating system

Instructions: Answer the questions (Q26 and Q27)on paper, take pictures of your work paste to word document and upload the file using link at the end of page. Section B ( 4 Marks) Consider that there are five (5) memory partitions in computer. The memory blocks are of sizes 180 MB, 500 MB, 350 MB, 280 MB, 600 MB. Use the memory partition allocation methods to find the worst-fit to place the processes of size 215 MB, 300 MB, 150 MB, and 420 MB? Worst Fit Process Process Size Block No P1 215 P2 300 P3 150 P4 420 There are 4 processes PO, P1,P2,P3 and three resources A,B,C are available. The resource A has 3 instances, B has 14 instances, C has 11 instances. Use Banker's algorithm to find out whether the system is in safe state or not. Max Allocation Need Available A B A B C B PO 0 0 2 0 0 1 1 5 2 P1 1 7 5 1 0 0 P2 2 3 5 1 3 5 P3 0 6 5 0 6 3 i. Calculate the need matrix ii. Identify the safe sequence