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UGC NET Computer Science Nov 2021 (Paper II)

Consider a machine with $16\ GB$ main memory and $32$-bits virtual address space, with page size as $4KB$. Frame size and page size is same for the given machine.

 If a process of size $34KB$ is to be executed on this machine, then what will be the size of internal fragmentation for this process?

Solution

Page size $=4KB$

Process size $=34KB$

Number of pages required:

$\left\lceil\frac{34}{4}\right\rceil=\lceil8.5\rceil=9$

Total allocated memory:

$9\times4KB=36KB$

Internal fragmentation:

$36KB-34KB=2KB$

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