MadeEasy Test Series: Operating System - File System

Question

Which of the following statements are true?

S1 : Using a larger block size in fixed block size file system leads to better disk throughput but poor disk space utilization.
S2 : In index allocation of block to a file, the maximum possible size of file depends on the size of blocks, the number of blocks used for the index, and the size of the address of blocks.

    a).Only S1

    b).Only S2

    c).Both S1 and S2

    d).Neither S1 nor S2

Answer 1

Statement 1 : Larger block size means less number of blocks to fetch and hence better throughput. But larger block size also means space is wasted when only small size is required.

Statement 2 : https://gateoverflow.in/852/gate2002_2-22

Hence , Option C is correct

Comments

Thanks @pC

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i feel that answer is B , because using a larger block size in fixed block size file system leads to better disk space utilization but it has nothing to do with throughput, so S1 is false.

and S2 is true from the definition of index allocation of block to a file.

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chk my ans down below

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@viswa  According to you What does throughput mean here?

Answer 2

OPTION C is correct
S1 : Using a larger block size in fixed block size file system leads to better disk throughput but poor disk space utilization.

By Expermintation it has found out that 512 bytes block are Best Size

why so,??

 suppose  your Block size is 1024 bytes

and you want to store data of 1024+1 bytes so to store one exttra byte 1 block is wasted this is called internal fragmentation you can't do any this for it

On an Average half of Block size is Wasted on per File

so, taking Block size large is not a good idea but it is also true that it increases throughput

Hence S1 is True

statement 2

In index allocation of block to a file, the maximum possible size of file depends on the size of blocks, the number of blocks used for the index, and the size of the address of blocks.

https://en.wikipedia.org/wiki/Inode_pointer_structure

Comments

I know that.
It's given as answer by MadeEasy.
Question is How?

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Exactly you should write the proper explanation @Shubham Pandey 2

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edited tell me if more explanation needed or in case if it is wrong