MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Microprocessors knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The number of bytes required for an interrupt in an IDT is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 2. |
The number of interrupt descriptors that the interrupt descriptor table (IDT) handles is |
| A. | 16 |
| B. | 64 |
| C. | 128 |
| D. | 256 |
| Answer» E. | |
| 3. |
The descriptor that is used to store task gates, interrupt gates and trap gates is |
| A. | system descriptor table |
| B. | gate descriptor table |
| C. | interrupt descriptor table |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
The instruction that loads a selector which refers to a local descriptor table, containing the base address and limit for LDT is |
| A. | LGT |
| B. | GDT |
| C. | LGDT |
| D. | LLDT |
| Answer» E. | |
| 5. |
The instruction that is executed at privilege level zero (0) is |
| A. | LDT |
| B. | LGDT and LLDT |
| C. | GDT |
| D. | None of the mentioned |
| Answer» C. GDT | |
| 6. |
If table indicator, TI=0, then the descriptor table selected is |
| A. | local descriptor table |
| B. | global descriptor table |
| C. | local and global descriptor table |
| D. | none of the mentioned |
| Answer» C. local and global descriptor table | |
| 7. |
The selector field consists of |
| A. | requested privilege level (RPL) |
| B. | table indicator |
| C. | index |
| D. | all of the mentioned |
| Answer» E. | |
| 8. |
The memory that maintains the most frequently required data for execution, in a high speed memory is called |
| A. | virtual memory |
| B. | physical memory |
| C. | cache memory |
| D. | ROM (read only memory) |
| Answer» D. ROM (read only memory) | |
| 9. |
The gate that uses word count field is |
| A. | trap gate |
| B. | task gate |
| C. | interrupt gate |
| D. | call gate |
| Answer» E. | |
| 10. |
The gate that is used to switch from one task to another is |
| A. | trap gate |
| B. | task gate |
| C. | task gate and trap gate |
| D. | none of the mentioned |
| Answer» C. task gate and trap gate | |
| 11. |
The gate that is used to specify a corresponding service routine is |
| A. | call gate and trap gate |
| B. | task gate and interrupt gate |
| C. | interrupt gate and trap gate |
| D. | task gate and trap gate |
| Answer» D. task gate and trap gate | |
| 12. |
The gate that is used to alter the privilege levels is |
| A. | call gate |
| B. | task gate |
| C. | interrupt gate |
| D. | trap gate |
| Answer» B. task gate | |
| 13. |
The gate descriptor contains the information of |
| A. | destination of control transfer |
| B. | stack manipulations |
| C. | privilege level |
| D. | all of the mentioned |
| Answer» E. | |
| 14. |
Which of the following is a type of gate descriptor? |
| A. | call gate |
| B. | task gate |
| C. | interrupt gate |
| D. | all of the mentioned |
| Answer» E. | |
| 15. |
Which of the following is a type of system segment descriptor? |
| A. | system descriptor |
| B. | gate descriptor |
| C. | system descriptor and gate descriptor |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |