| 41. | The instructions which can be run only supervisor mode are |
| a. | Non-privileged instructions |
| b. | System instructions |
| c. | Privileged instructions |
| d. | Exception instructions |
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Answer: (c).Privileged instructions
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| 42. | A privilege exception is raised, |
| a. | When a process tries to change the mode of the system |
| b. | When a process tries to change the piority level of the other processes |
| c. | When a process tries to access the memory allocated to other user |
| d. | All of the above |
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Answer: (d).All of the above
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| 43. | How is a privilege exception dealt ? |
| a. | The program is alted and the system switches into supervisor mode and restarts the program execution |
| b. | The Program is stopped and removed from the queue |
| c. | The system switches the mode and starts the execution of a new process |
| d. | The system switches mode and runs the debugger |
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Answer: (a).The program is alted and the system switches into supervisor mode and restarts the program execution
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| 44. | After reset, CPU begins execution of instruction from memory address |
| a. | 0101H |
| b. | 8000H |
| c. | 0000H |
| d. | FFFFH |
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Answer: (c).0000H
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| 45. | Synchronous means _______ |
| a. | At irregular intervals |
| b. | At same time |
| c. | At variable time |
| d. | None of these |
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Answer: (b).At same time
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| 46. | An effective solution to the power consumption problem lies in using _______ transistors to implement ICs. |
| a. | NMOS |
| b. | TTL shottky |
| c. | PMOS |
| d. | both NMOS & PMOS |
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Answer: (d).both NMOS & PMOS
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| 47. | When CPU is executing a Program that is part of the Operating System, it is said to be in |
| a. | Interrupt mode |
| b. | System mode |
| c. | Half mode |
| d. | Simplex mode |
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Answer: (b).System mode
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| 48. | When a logic circuit diagram is given, you can analyse the circuit to obtain the _____________. |
| a. | Result |
| b. | Input |
| c. | Logic Expression |
| d. | None of the above |
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Answer: (c).Logic Expression
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| 49. | IC chips based on packaging density are |
| a. | Small-Scale Integration (SSI): Up to 12 gates |
| b. | Medium-Scale Integration (MSI): 12–99 gates |
| c. | Small- Scale Integration (SSI): Up to 14 gates |
| d. | Both a and b |
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Answer: (d).Both a and b
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| 50. | While designing a digital system, the main objectives are |
| a. | Low cost |
| b. | Less number of gates |
| c. | Increased Speed |
| d. | All of the above |
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Answer: (d).All of the above
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