| 41. | A critical region |
| a. | is a piece of code which only one process executes at a time |
| b. | is a region prone to deadlock |
| c. | is a piece of code which only a finite number of processes execute |
| d. | is found only in Windows NT operation system |
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Answer: (a).is a piece of code which only one process executes at a time
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| 42. | Which is not an Operating System ? |
| a. | Windows 95 |
| b. | Windows 2000 |
| c. | MS-DOS |
| d. | Firefox |
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Answer: (d).Firefox
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| 43. | It is not the layer of the Operating system. |
| a. | Kernel |
| b. | Shell |
| c. | Application program |
| d. | Critcal Section |
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|
Answer: (d).Critcal Section
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| 44. | What is the name of the software which can be legally compiled and often used for free? |
| a. | Shareware program |
| b. | Public domain program |
| c. | Firmware program |
| d. | Mind Ware |
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|
Answer: (b).Public domain program
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| 45. | The higher versions of operating systems are so written that programs designed for earlier versions can still be run. What is it called ? |
| a. | Up gradiability |
| b. | Upward mobility |
| c. | Universality |
| d. | Upward Compatibility |
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Answer: (d).Upward Compatibility
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| 46. | What is the name of the software which deals with the running of the actual computer and not with the programming problems? |
| a. | Operating system |
| b. | System program |
| c. | Object program |
| d. | Source program |
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Answer: (b).System program
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| 47. | Supervisor state is only allowed to ? |
| a. | Utility Softwares |
| b. | Application Softwares |
| c. | Operating System |
| d. | Guest User |
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Answer: (c).Operating System
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| 48. | Which of the following is always there in a computer ? |
| a. | Batch system |
| b. | Operating system |
| c. | Time sharing system |
| d. | Controlling system |
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Answer: (b).Operating system
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| 49. | Relocation bits used by relocating loader are specified by |
| a. | Relocating loader |
| b. | Assembler |
| c. | Translator |
| d. | Linker |
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Answer: (d).Linker
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| 50. | In which of the following usually a front end processor is used ? |
| a. | Virtual storage |
| b. | Timesharing |
| c. | Multiprogamming |
| d. | Multithreading |
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Answer: (b).Timesharing
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