BC0042_OS-Model_Question_Paper

BC0042_OS-Model_Question_Paper - Model Question Paper...

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Model Question Paper Subject Code: BC0042 Subject Name: Operating Systems Credits: 4 Marks: 140 Part A (One mark questions) 1. sequence of instructions telling the computer what to do is called a --------------------- a) program b)language c) translator d) package 2. A process is ------------------ a) program in main memory b) Program in cache memory c) program in secondary storage d) program in execution
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3. A program to be executed must be in --------------- a) main memory b) secondary memory c) virtual memory d) Read only memory 4. ------------------ are very expensive and employed for specialized applications such as weather forecasting a) Micro computers b) Super computers c) Personal computers d) Mainframe computers 5. In MS-DOS, the interfaces and levels of functionality are --------------- a) not well separated. b) well separated c) independent d) dependent 6. --------------------- approach simplifies debugging and system verification a) Kernel b) Layered c) Extended d) Virtual machine 7. In layered approach each layer uses the functions and services of ------------------ a) kernel b) lower-level layers c) higher-level layers
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d) all of these 8. ------------------------------is a piece of computer software that isolates the application being used by the user from the computer. a) compiler b) Modules c)virtual machine d) none of these 9. Using---------------- the file subsystem of Kernel mode is responsible for file and I/O management. a) system calls b) device drivers c) modules d) virtualization technique 10. A process may create a new process by executing --------------- system call a) init b) fork c) create d) new 11. A process control block contains varies attributes required by --------------------- to control a process a) RAM b) virtual memory c) BIOS d) Operating System 12. ------------- are popular way to improve application through parallelism a) Processes
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b) Threads c) Context switching d) none of these 13. --------------- is responsible for allocating primary memory to processes and for assisting the programmer in loading and storing the contents of the primary memory. a) Operating system b) Memory manager c)database administrator d) RAM 14. ------------------------- refers to the technology in which some space in hard disk is used as an extension of main memory. a) cache memory b) paging c) virtual memory d) paging 15. ------------- deals with when a modified page should be written out to secondary memory. a) cleaning policy b) fetch policy c) frame locking d) none of these 16. Microprocessors with small internal caches often employ the --------------------------- mechanism a) direct mapping b) fully associative c) set associative
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d) sector mapping 17. ______________ selects a process from among the ready processes to execute on the CPU.
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BC0042_OS-Model_Question_Paper - Model Question Paper...

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