Test
Memory management and registers in operating systems
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Preguntas del test (33)
12. Which of the following registers are used by the processor to exchange data with memory?
- A● PC and IR
- B● MAR and MBR
- C● Program status word
- D● I/OAR and I/OBR
- E● System Bus
23. Which of the following registers are used by the processor to exchange data with input/output module?
- A● MAR and MBR
- B● PC and IR
- C● I/OAR and I/OBR
- D● Program status word
34. Which of the following element of a computer system controls the operation of the computer and performs its data processing functions?
- A● System bus
- B● Main memory
- C● Processor
- D● I/O modules
45. Which of the following element of a computer system stores data and programs?
- A● Main memory
- B● System bus
- C● I/O modules
- D● Processor
57. Which of the following element of a computer system moves data between the computer and its external environment?
- A● Processor
- B● Main memory
- C● System bus
- D● I/O modules
69. This register specifies a particular input/output device
- A● Memory address register
- B● I/OAR
- C● Memory buffer register
- D● I/OBR
7230. If a page table entry is not in main memory, then it is known as a:
- A● page fault
- B● TLB miss
- C● TLB hit
- D● buffer miss
8227. For every process there is a __________.
- A● pointer to page table
- B● frame table
- C● page table
- D● copy of page table
9226. The operating system maintains a ______ table that keeps track of how many frames have been allocated, how many are there, and how many are available.
- A● memory
- B● frame
- C● segment
- D● page
10225. With paging there is no ________ fragmentation.
- A● either type of
- B● none of the above
- C● external
- D● internal
11221. Variable-length block of data that resides in secondary memory is called ________.
- A● none of the above
- B● frames
- C● segments
- D● pages
12218. When the memory allocated to a process is slightly larger than the process, then:
- A● both will occur
- B● external fragmentation occurs
- C● internal fragmentation occurs
- D● none of the above
13216. External fragmentation exists when:
- A● the total memory is insufficient to satisfy a request
- B● none of the above
- C● enough total memory exists to satisfy a request but it is not contiguous
- D● a request cannot be satisfied even when the total memory is free
14214. A solution to the problem of external fragmentation is:
- A● smaller memory space
- B● unequal size parts
- C● larger memory size
- D● compaction
15213. In internal fragmentation, memory is internal to a partition and:
- A● is not being used
- B● is being used
16211. In fixed sized partition, the degree of multiprogramming is bounded by ___________.
- A● the memory size
- B● all of the above
- C● the number of partitions
- D● the CPU utilization
17208. Operating System maintains the page table for:
- A● each thread
- B● each process
- C● each address
- D● each instruction
18205. The address of a page table in memory is pointed by:
- A● page table base register
- B● page register
- C● program counter
- D● stack pointer
19203. Which one of the following is the address generated by CPU?
- A● none of the above
- B● logical address
- C● physical address
- D● absolute address
20201. CPU fetches the instruction from memory according to the value of?
- A● status register
- B● program status word
- C● instruction register
- D● program counter
21200. A relationship between processes such that each has some part (critical section) which must not be executed while the critical section of another is being executed, is known as?
- A● Multitasking
- B● Semaphore
- C● Mutual exclusion
- D● multiprogramming
22195. Which of the following is not true about the memory management?
- A● virtual memory is used only in multi-user systems
- B● paging suffers from internal fragmentation
- C● segmentation suffers from external fragmentation
- D● None of the above
23193. Which of the following statements is false?
- A● I\O transfers are more efficient with large pages
- B● a large page size causes instructions and data that will not be referenced brought into primary storage
- C● a small page size causes large page tables
- D● internal fragmentation is increased with small pages
24188. The memory allocation scheme subject to "internal" fragmentation is?
- A● multiple contiguous fixed partitionings
- B● pure demand paging
- C● swapping
- D● segmentation
25188. Which of the following statements is false:
- A• the technique of storage compaction involves moving all occupied areas of storage to one end or other of main storage
- B• compaction does not involve relocation of programs
- C• the system must stop everything while it performs the compaction
- D• compaction is also known as garbage collection
26Нуржан агаш или нет?
- Aтру ия агаш
- Bтруууууу
- Cфолс - озин Агаш
- DАгаш ко блемин
- Eмб
27187. When each process in the set is blocked awaiting for resource siezed by another blocked process
- A● it is a deadend
- B● it is a mortallock
- C● it is a deadlock
- D● it is a softlock
28184. This resource can be safely used by only one process at a time and is not depleted by that use
- A• refurbished resource
- B• replenishing resource
- C• reusable resource
- D• refreshing resource
29180. 'Mutual exclusion' condition for deadlock is defined as
- A• Process holds a resource while awaiting for other resource
- B• Only one process may use a resource at a time
- C• Each process holds resource needed by next process in chain
- D• No resource can be forcibly removed from process holding it
30179. 'No preemption' condition for deadlock is defined as
- A• No resource can be forcibly removed from process holding it
- B• Each process holds resource needed by next process in chain
- C• Process holds a resource while awaiting for other resource
- D• Only one process may use a resource at a time
31173. This matrix defines the current allocation to process i of the resource j
- A• Allocation matrix
- B• Claim matrix
- C• Request matrix
- D• Resource matrix
32174. This matrix defines the amount of resources of type j requested by process i
- A• Allocation matrix
- B• Resource matrix
- C• Request matrix
- D• Claim matrix
33175. This matrix defines requirements of processes i for the resources j
- A• Allocation matrix
- B• Claim matrix
- C• Resource matrix
- D• Request matrix
Información
- Descripción
- Test sobre Sin título, creado por Erasyl Ospanov el 17/12/2017.
- Autor
- Erasyl Ospanov
- Idioma
- English
- Visitas
- 0
- Valoración
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