MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Operating System knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
To obtain better memory utilization, dynamic loading is used. With dynamic loading, a routine is not loaded until it is called. For implementing dynamic loading ____________ |
| A. | special support from hardware is required |
| B. | special support from operating system is essential |
| C. | special support from both hardware and operating system is essential |
| D. | user programs can implement dynamic loading without any special support from hardware or operating system |
| Answer» E. | |
| 2. |
In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is? |
| A. | 3.0 ns |
| B. | 68.0 ns |
| C. | 68.5 ns |
| D. | 78.5 ns |
| Answer» D. 78.5 ns | |
| 3. |
When there is a large logical address space, the best way of paging would be ____________ |
| A. | not to page |
| B. | a two level paging algorithm |
| C. | the page table itself |
| D. | all of the mentioned |
| Answer» C. the page table itself | |
| 4. |
When the valid invalid bit is set to valid, it means that the associated page ____________ |
| A. | is in the TLB |
| B. | has data in it |
| C. | is in the process s logical address space |
| D. | is the system s physical address space |
| Answer» D. is the system s physical address space | |
| 5. |
Memory protection in a paged environment is accomplished by ____________ |
| A. | protection algorithm with each page |
| B. | restricted access rights to users |
| C. | restriction on page visibility |
| D. | protection bit with each page |
| Answer» E. | |
| 6. |
The percentage of times a page number is found in the TLB is known as ____________ |
| A. | miss ratio |
| B. | hit ratio |
| C. | miss percent |
| D. | none of the mentioned |
| Answer» C. miss percent | |
| 7. |
If a page number is not found in the TLB, then it is known as a ____________ |
| A. | TLB miss |
| B. | Buffer miss |
| C. | TLB hit |
| D. | All of the mentioned |
| Answer» B. Buffer miss | |
| 8. |
Each entry in a translation lookaside buffer (TLB) consists of ____________ |
| A. | key |
| B. | value |
| C. | bit value |
| D. | constant |
| Answer» B. value | |