1. Each of the Mobile Operating Systems discussed in classAndroid, IOS, Windows 8 use a layered architecture. Create a graphic to compare their architectures and discuss any significant differences.
2. What makes a Mobile Operating System special? That is why is it different than other Operating systems?
3. What is the purpose of synchronizing processes?
4. What method of Inter-Process Communication must be used in distributed systems?
5. Given the following code for processes A and B. If process A is scheduled then process B is scheduled what are the possible values inside the shared memory locations Interest, Payment, and Balance if the location Interest holds 10%, the location payment holds $100, and the location Balance holds $1000? explain Process A Process B

R1 = Interest R3 = Payment R2 = Balance R4 = Balance R2 = R2*(1 + R1) R4 = R4 R3 Balance = R2 Balance = R4

What requirements must be met to ensure the Critical Section is maintained