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Q1:Discuss one of interprocess communication mechanism implemented in the following Operating systems: Android, MAC OS, Windows, Solaris

Q2:

Consider a multicore system and a multithreaded program written using the many-to-many threading model. Let the number of user-level threads in the program be greater than the number of processing cores in the system. Discuss the performance implications of the following scenarios.

1. The number of kernel threads allocated to the program is less than the number of processors.

2. The number of kernel threads allocated to the program is equal to the number of processing cores.

Q3:

Consider a set of five processes P1, P2,P3,P4 and P5 arriving in the order P1, P2, P3,P4 and P5 at time instant 0 and having CPU burst times as shown below. Draw the Gantt chart and calculate the average waiting time, average turnaround time using FCFS and SJF algorithm.

Process	Burst time (ms)
P1	8
P2	6
P3	1
P4	9
P5	3