MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
In the Many to Many model true concurrency cannot be gained because ___________ |
| A. | the kernel can schedule only one thread at a time |
| B. | there are too many threads to handle |
| C. | it is hard to map threads with each other |
| D. | none of the mentioned |
| Answer» B. there are too many threads to handle | |
| 2. |
In the One to One model when a thread makes a blocking system call ___________ |
| A. | other threads are strictly prohibited from running |
| B. | other threads are allowed to run |
| C. | other threads only from other processes are allowed to run |
| D. | none of the mentioned |
| Answer» C. other threads only from other processes are allowed to run | |
| 3. |
The One to One model allows ___________ |
| A. | increased concurrency |
| B. | decreased concurrency |
| C. | increased or decreased concurrency |
| D. | concurrency equivalent to other models |
| Answer» B. decreased concurrency | |
| 4. |
In the Many to One model, multiple threads are unable to run in parallel on multiprocessors because of ___________ |
| A. | only one thread can access the kernel at a time |
| B. | many user threads have access to just one kernel thread |
| C. | there is only one kernel thread |
| D. | none of the mentioned |
| Answer» B. many user threads have access to just one kernel thread | |
| 5. |
In the Many to One model, if a thread makes a blocking system call ___________ |
| A. | the entire process will be blocked |
| B. | a part of the process will stay blocked, with the rest running |
| C. | the entire process will run |
| D. | none of the mentioned |
| Answer» B. a part of the process will stay blocked, with the rest running | |
| 6. |
The model in which one user-level thread is mapped to many kernel level threads is called ___________ |
| A. | Many to One model |
| B. | One to Many model |
| C. | Many to Many model |
| D. | One to One model |
| Answer» C. Many to Many model | |
| 7. |
The model in which one kernel thread is mapped to many user-level threads is called ___________ |
| A. | Many to One model |
| B. | One to Many model |
| C. | Many to Many model |
| D. | One to One model |
| Answer» B. One to Many model | |