1) What is operating system? a) collection of programs that manages hardware resources b) system service provider to the application programs c) link to interface the hardware and application program d) all of the mentioned 2) To access the services of operating system, the interface is provided by the a) system calls b) API c) library d) assembly instructions 3) Logical extension of multiprogramming operating system is a) time sharing b) multi-tasking c) single programing d) both a and b 4) What type of OS structure involves a complete, single program that includes all operating system services? a) Microkernel b) Monolithic c) Layered d) Modular 5) Which linux command enables the user to create a new directory a) grep b) chmod c) mkdir d) pwd 6) What is the primary function of the process control block (PCB)? a) To store the process's code b) To store the process's data c) To hold all the information about a process, including its state, CPU registers, and memory management information d) To manage the process's input/output operations 7) The processes that are residing in the main memory and are ready and waiting to be executed, are kept on a list called a) process queue b) job queue c) ready queue d) execution queue 8) Threads is not shared among which of the following? a) stack b) program counter c) both a and b d) None 9) In which type of scheduling algorithm can a higher-priority process interrupt a lower-priority process that is currently executing? a) Non-preemptive Scheduling b) Preemptive Scheduling c) First-Come, First-Served d) Batch Scheduling 10) Which scheduler is responsible for admitting processes into the system or the ready queue from the job pool? a) Short-Term Scheduler b) Medium-Term Scheduler c) Long-Term Scheduler (Job Scheduler) d) Dispatcher

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