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Digital Assistant 2023 PART B - 100 Marks All Topics MCQs

Memory Management - Operating System Questions and Answers

1.

A memory buffer used to accommodate a speed differential is called

   A.) stack pointer
   B.) cache
   C.) accumulator
   D.) disk buffer

Answer: Option 'B'

​cache

2.

CPU fetches the instruction from memory according to the value of

   A.) program counter
   B.) status register
   C.) instruction register
   D.) program status word

Answer: Option 'A'

​program counter

3.

Which one of the following is the address generated by CPU?

   A.) logical address
   B.) absolute address
   C.) physical address
   D.) none of the mentioned

Answer: Option 'A'

logical address

4.

Run time mapping from virtual to physical address is done by

   A.) Memory management unit
   B.) CPU
   C.) PCI
   D.) None of the mentioned

Answer: Option 'A'

Memory management unit

5.

Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called

   A.) fragmentation
   B.) paging
   C.) mapping
   D.) none of the mentioned

Answer: Option 'B'

paging

6.

The address of a page table in memory is pointed by

   A.) stack pointer
   B.) page table base register
   C.) page register
   D.) program counter

Answer: Option 'B'

​page table base register

7.

Program always deals with

   A.) logical address
   B.) absolute address
   C.) absolute address
   D.) relative address

Answer: Option 'A'

logical address

8.

The page table contains

   A.) base address of each page in physical memory
   B.) page offset
   C.) page size
   D.) none of the mentioned

Answer: Option 'A'

​base address of each page in physical memory

9.

What is compaction?

   A.) a technique for overcoming internal fragmentation
   B.) a paging technique
   C.) a technique for overcoming external fragmentation
   D.) a technique for overcoming fatal error

Answer: Option 'C'

​a technique for overcoming external fragmentation

10.

Operating System maintains the page table for

   A.) each process
   B.) each thread
   C.) each instruction
   D.) each address

Answer: Option 'A'

each process


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