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Similar to Operating systemsquiz (20)
Operating systemsquiz
- 2. Before Operating System was developed, What was used to interact with hardware? Answer: ASSEMBLY LANGUAGE In around 1940s , computer system was mainly used by researchers, who were both programmers as well as end users of computer systems
- 3. What is Symmetric and Asymmetric multiprocessing? Answer: Asymmetric Symmetric Each processor is assigned a specific task. A master processor controls the system . The scheme defines a master-slave relationship All processors are peers, No master slave relationship. Ex: mobile phones Ex: Solaris System Solaris is Unix operating system.
- 4. What are the dual mode of Operating system? Answer: 1. User mode 2. kernel mode User mode is executed on behalf of user whereas kernel mode is executed on behalf of operating system A bit is added to the hardware of computer to indicate current mode- Kernel (0) User (1) This is known as mode bit.
- 5. What is von Neuman computer architecture? Answer: Von Neumann architecture is based on the stored-program computer concept, where instruction data and program data are stored in the same memory. Von Neumann is better for desktop computers, laptops, workstations and high performance computers.
- 6. Which system call is used to create a new process? Answer: fork() System Calls are requests for a service from the kernel of the operating system on which it is executed. Which system call is used to terminate a process? Answer: kill()
- 7. What is Round robin scheduling Algorithm? Answer: To schedule processes fairly, a round-robin scheduler generally employs time-sharing, giving each job a time slot or quantum (its allowance of CPU time), and interrupting the job if it is not completed by then. The job is resumed next time a time slot is assigned to that process.
- 8. What is Deadlock condition in process management of operating system? Answer: When multiple process wait for each other to free up resources and thus all remain halted, this situation is known as deadlock.
- 9. What does the heap section in process memory stores? Answer: Heap Section is the memory which is dynamically allocated during runtime. Where is the program code stored? Answer: Text section
- 10. Can you explain the memory hierarchy of following memory units- Main memory, Auxillary memory, registers, Cache? Answer:
- 11. Which type of operating system is used for embedded applications? Answer: RTOS(real time operating system) especially designed and developed for handling real time applications, applications that are required to executed within a period of time. Types of operating system: 1. Batch processing operating system 2. Multi user operating system 3. Multitasking operating system 4. Real time operating system 5. Multi processor operating system 6. Embedded Operating systems.
- 12. Which command is used to show time and how can we avoid to change it in cmd prompt? Answer: “time”, If the parameter /T is entered, the command prompt only shows the time and offers no option to directly change it. Which command is used to see the content of a text file in cmd prompt? Answer: type
- 13. For what the command “md ” is used in cmd prompt? Answer: Creates a new directory on the specified path. Which command is used to see the environment variables in cmd prompt? Answer: set How can we see the list of all running processes in cmd prompt? Answer: tasklist
- 14. THANK YOU