Q1 = Kernels, User Threads & processcor theory
Q2 = CPU Scheduling calculations and GANTT Charts.
Q3 = Deadlock formulas and Calculations or page replacement Algorithms.
Q4 = Deadlock formulas and Calculations or page replacement Algorithms or maybe even Scheduling algorithms
Q5 = semapores wait & signal understanding of concepts.
Q6 = memory managment(Fragmentation) Discusssion.