MCQOPTIONS
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MCQOPTIONS
This section includes 14 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_DESCRIPTOR_THAT_IS_USED_FOR_SPECIAL_SYSTEM_DATA_SEGMENTS_AND_CONTROL_TRANSFER_OPERATIONS_IS?$ |
| A. | data segment descriptors |
| B. | gate descriptors |
| C. | code segment descriptors |
| D. | system segment descriptors |
| Answer» E. | |
| 2. |
In access rights byte, if P (Present)=1, then the segment is mapped into$ |
| A. | physical memory |
| B. | virtual memory |
| C. | no mapping takes place |
| D. | none of the mentioned |
| Answer» B. virtual memory | |
| 3. |
A_code_segment_descriptor_contains$ |
| A. | 16-bit segment limit |
| B. | 24-bit segment base address |
| C. | 8-bit access rights byte |
| D. | all of the mentioned |
| Answer» E. | |
| 4. |
The memory of limit field is |
| A. | 2 bits |
| B. | 4 bits |
| C. | 8 bits |
| D. | 16 bits |
| Answer» E. | |
| 5. |
If S (segment descriptor)=1, then the descriptor selected is |
| A. | code segment descriptor |
| B. | data segment descriptor |
| C. | stack segment descriptor |
| D. | all of the mentioned |
| Answer» E. | |
| 6. |
In_access_rights_byte,_to_select_system_segment_descriptor,_the_condition_is |
| A. | S=1 |
| B. | S=0 |
| C. | S not equal to zero |
| D. | none of the mentioned |
| Answer» C. S not equal to zero | |
| 7. |
A descriptor is used to carry ou? |
| A. | transfer of control |
| B. | task switching |
| C. | to store privilege level and segment limit |
| D. | all of the mentioned |
| Answer» E. | |
| 8. |
A segment with low privilege level is not allowed to access another segment of |
| A. | low privilege level |
| B. | high privilege level |
| C. | low and high privilege level |
| D. | none of the mentioned |
| Answer» C. low and high privilege level | |
| 9. |
The descriptors that are used for subroutines and interrupt service routines are |
| A. | data segment descriptors |
| B. | gate descriptors |
| C. | code segment descriptors |
| D. | system segment descriptors |
| Answer» C. code segment descriptors | |
| 10. |
A descriptor contains information of |
| A. | program segment |
| B. | page |
| C. | regarding segment and its access rights |
| D. | all of the mentioned |
| Answer» E. | |
| 11. |
The branch instructions are handled by |
| A. | swapping mechanism |
| B. | unswapping mechanism |
| C. | operating system |
| D. | all of the mentioned |
| Answer» E. | |
| 12. |
The ability of 80286 to address the virtual memory per task is |
| A. | 1MB |
| B. | 1GB |
| C. | 1TB |
| D. | none of the mentioned |
| Answer» C. 1TB | |
| 13. |
The procedure of storing back the partial results on to the secondary storage is called |
| A. | mapping |
| B. | swapping |
| C. | unswapping |
| D. | pipelining |
| Answer» D. pipelining | |
| 14. |
The procedure of fetching the chosen program segments or data from the secondary storage into the physical memory is |
| A. | mapping |
| B. | swapping |
| C. | unswapping |
| D. | pipelining |
| Answer» C. unswapping | |