Operating System Multiple Choice Questions on “Memory Management”.
1. 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: a
Clarification: None.
2. A memory buffer used to accommodate a speed differential is called ____________
a) stack pointer
b) cache
c) accumulator
d) disk buffer
Answer: b
Clarification: None.
3. Which one of the following is the address generated by CPU?
a) physical address
b) absolute address
c) logical address
d) none of the mentioned
Answer: c
Clarification: None.
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: a
Clarification: None.
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: b
Clarification: None.
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: b
Clarification: None.
7. Program always deals with ____________
a) logical address
b) absolute address
c) physical address
d) relative address
Answer: a
Clarification: None.
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: a
Clarification: None.
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: c
Clarification: None.
10. Operating System maintains the page table for ____________
a) each process
b) each thread
c) each instruction
d) each address
Answer: a