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12.  In a presidential system, the president is elected by the: A.  National legislature B.  People directly or through electors chosen by the people (as in America) C.  Mayors of the 50 largest cities D.  State governors    

All the following is true of the German economy, except:   A.  It was industrialized before the British economy B.  It embraced welfare and workers active involvement in formulating economic policies to defuse pressure from and limit the attractiveness of communists and other leftist groups in the time of Bismarck C.  Compared to the American economy, it involves more state involvement D.  It involves the principle of “co-determination”  

8.  When the Federal Reserve Bank raises interest rate in an effort to control inflation, its action is an exercise in: A.  Fiscalism. B.  Regulatory policy C.   Monetarism D.   Protectionism

Which synchronization tool uses the operations wait() and signal()?  

Which synchronization tool uses the operations wait() and signal()?  

Consider a system with 5 processes (P0–P4) and 3 resource types (A, B, C). The system state is given below. Allocation Matrix Process A B C P0 0 1 0 P1 2 0 0 P2 3 0 2 P3 2 1 1 P4 0 0 2 Maximum Matrix Process A B C P0 7 5 3 P1 3 2 2 P2 9 0 2 P3 2 2 2 P4 4 3 3 Available Resources Available = (3, 3, 2) Tasks Compute the Need matrix. Determine whether the system is in a safe state. If it is safe, find the safe sequence of processes.

Solve the compound inequality. Graph the solution set, and write the solution set in interval notation.-1 ≤   < 4

Consider a system with 5 processes (P0–P4) and 3 resource types (A, B, C). The system state is given below. Allocation Matrix Process A B C P0 0 1 0 P1 2 0 0 P2 3 0 2 P3 2 1 1 P4 0 0 2 Maximum Matrix Process A B C P0 7 5 3 P1 3 2 2 P2 9 0 2 P3 2 2 2 P4 4 3 3 Available Resources Available = (3, 3, 2) Tasks Compute the Need matrix. Determine whether the system is in a safe state. If it is safe, find the safe sequence of processes.

Simplify the expression in terms of i:

Explain Interprocess Communication (IPC) in operating systems. Your answer should include: Definition of cooperating processes Two IPC mechanisms: Shared Memory Message Passing Advantages and disadvantages of each method One real-world example where IPC is used.