1 Which of the following component permits the end user to interact with the operating system and offer the user a compatible environment for programming? O a. File Management O b. Command Interpreter O c. Memory Management O d. Protection Management Which of the following is not true about kernel? 2 O a. Control module of OS O b. provide secure access to the hardware components O c. Function of kernel is to execute programs O d. Loaded at last during booting process Which among the following are the contents inside Process Control Block (PCB)? 3 O a. PCB contains Process state, name of OS and Registers b. PCB contains Registers, Cache contents and Program Counter O C. PCB contains Process Id, Program Counter and name of OS O d. PCB contains Process Id, Registers and Program Counter Which of the following in PCB indicates the address of the next instruction which is to be executed within a process? 4 O a. Process state O b. Process ID O c. Register O d. Program Counter For Questions 7,8 refer to the statement given below. Consider the process P1, P2, P3, P4 with their Burst times. Apply SJF CPU scheduling algorithm. Assume all the processes arrive at the same time. 5 Process Burst Time (ms) P1 3 P2 2 P3 5 P4 4 Find the waiting time of P2 and P3. O a. P3 -5 P2 -9 O b. P2 - 3 P3-0 O c. P2-2. P3 - 1 O d. P2 - 0 P3 -9 For Questions 7,8 refer to the statement given below. Consider the process P1, P2, P3, P4 with their Burst times. Apply SJF CPU scheduling algorithm. Assume all the processes arrive at the same time. 6 Process Burst Time (ms) P1 3 P2 2 P3 5 P4 4 7 Find the waiting time for Process P1 and P2. O a. P1-2 P2-0 O b. P1-5 P2-9 O c. P1 -5 P2-0 O d. P1 - 2 P2-5