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OS Memory Management
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OS Memory Management
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OS Memory Management
For larger page tables, they are kept in main memory and a __________ points to the page table.
page table base register
page table base pointer
page table register pointer
page table base
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OS Memory Management
CPU fetches the instruction from memory according to the value of ____________
program counter
status register
instruction register
program status word
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OS Memory Management
Smaller page tables are implemented as a set of _______
queues
stacks
counters
registers
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OS Memory Management
When memory is divided into several fixed sized partitions, each partition may contain ________
exactly one process
at least one process
multiple processes at once
none of the mentioned
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OS Memory Management
If a higher priority process arrives and wants service, the memory manager can swap out the lower priority process to execute the higher priority process. When the higher priority process finishes, the lower priority process is swapped back in and continues execution. This variant of swapping is sometimes called?
priority swapping
pull out, push in
roll out, roll in
none of the mentioned
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rikazzz
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OS Memory Management
If relocation is static and is done at assembly or load time, compaction _________
cannot be done
must be done
must not be done
can be done
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OS Memory Management
Every address generated by the CPU is divided into two parts. They are ____________
frame bit & page number
page number & page offset
page offset & frame bit
frame offset & page offset
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rikazzz
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OS Memory Management
For every process there is a __________
page table
copy of page table
pointer to page table
all of the mentioned
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rikazzz
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OS Memory Management
Run time mapping from virtual to physical address is done by ____________
Memory management unit
CPU
PCI
None of the mentioned
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rikazzz
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OS Memory Management
When the memory allocated to a process is slightly larger than the process, then ____________
internal fragmentation occurs
external fragmentation occurs
both internal and external fragmentation occurs
neither internal nor external fragmentation occurs
Author:
rikazzz
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