McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Master of Science in Computer Science (MSc CS) .
| 101. |
In the Many to One model, multiple threads are unable to run in parallel on multiprocessors because : |
| 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 these |
| Answer» A. only one thread can access the kernel at a time | |
| 102. |
The One to One model allows : |
| A. | increased concurrency |
| B. | decreased concurrency |
| C. | increased or decreased concurrency |
| D. | concurrency equivalent to other models |
| Answer» A. increased concurrency | |
| 103. |
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 these |
| Answer» B. other threads are allowed to run | |
| 104. |
Which of the following is the drawback of the One to One Model ? |
| A. | increased concurrency provided by this model |
| B. | decreased concurrency provided by this model |
| C. | creating so many threads at once can crash the system |
| D. | creating a user thread requires creating the corresponding kernel thread |
| Answer» D. creating a user thread requires creating the corresponding kernel thread | |
| 105. |
When is the Many to One model at an advantage ? |
| A. | when the program does not need multi-threading |
| B. | when the program has to be multi-threaded |
| C. | when there is a single processor |
| D. | none of these |
| Answer» A. when the program does not need multi-threading | |
| 106. |
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 these |
| Answer» A. the kernel can schedule only one thread at a time | |
| 107. |
In the Many to Many model when a thread performs 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 these |
| Answer» B. other threads are allowed to run | |
| 108. |
before a disk can store data is known as : (choose all that apply) |
| A. | partitioning |
| B. | swap space creation |
| C. | low-level formatting |
| D. | physical formatting |
| Answer» D. physical formatting | |
| 109. |
The data structue for a sector typically contains : (choose all that apply) |
| A. | header |
| B. | data area |
| C. | trailer |
| D. | main section |
| Answer» C. trailer | |
| 110. |
The header and trailer of a sector contain information used by the disk controller such as _________ and _________. |
| A. | main section |
| B. | error correcting codes (ecc) |
| C. | sector number |
| D. | disk identifier |
| Answer» C. sector number | |
| 111. |
The two steps the operating system takes to use a disk to hold its files are _______ and ________. |
| A. | partitioning |
| B. | swap space creation |
| C. | caching |
| D. | logical formatting |
| Answer» D. logical formatting | |
| 112. |
and then starts the operating system. |
| A. | main |
| B. | bootloader |
| C. | bootstrap |
| D. | rom |
| Answer» C. bootstrap | |
| 113. |
For most computers, the bootstrap is stored in ____. |
| A. | ram |
| B. | rom |
| C. | cache |
| D. | tertiary storage |
| Answer» B. rom | |
| 114. |
A disk that has a boot partition is called a _________. (choose all that apply) |
| A. | start disk |
| B. | system disk |
| C. | boot disk |
| D. | all of these |
| Answer» C. boot disk | |
| 115. |
Defective sectors on disks are often known as __________. |
| A. | good blocks |
| B. | destroyed blocks |
| C. | bad blocks |
| D. | none of these |
| Answer» C. bad blocks | |
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