Consider the following statements:S1: Using a larger block size in a fixed partition scheme may increase internal fragmentation.S2: Variable partition and segmentation suffers from external fragmentation.Which of the following above statement is true?a)S1b)S2c)Cant sayd)None of theseCorrect answer is option 'A,B'. Can you explain this answer?

Question

Answer

Using a larger block size in a fixed partition scheme may increase internal fragmentation:
- The fixed partition scheme divides the memory into fixed-size partitions or blocks.
- Each block is allocated to a process, and if the process requires less memory than the size of the block, the remaining space is wasted, leading to internal fragmentation.
- When a larger block size is used, it increases the likelihood of allocating more memory than necessary for a process, resulting in larger internal fragmentation.
- Therefore, statement S1 is true.

Variable partition and segmentation suffer from external fragmentation:
- In the variable partition scheme, the memory is divided into variable-sized partitions to accommodate processes of different sizes.
- Similarly, segmentation divides the memory into variable-sized segments based on logical units of a program.
- As processes are loaded and unloaded from memory, the free memory becomes scattered, leaving small chunks of unused memory between allocated partitions or segments.
- This scattered and unused memory is known as external fragmentation.
- Both variable partition and segmentation suffer from external fragmentation due to the dynamic allocation of memory.
- Therefore, statement S2 is true.

In conclusion, both statements S1 and S2 are true. Using a larger block size in a fixed partition scheme increases internal fragmentation, while variable partition and segmentation suffer from external fragmentation.

Answer

Given,

Statement S1: "Using a larger block size in a fixed partition scheme may increase internal fragmentation".

As the size of the block in the fixed partition scheme increases, the chances of internal fragmentation also increase. Because with a larger block size, if a smaller process arrives; the remaining block will be wasted. This is because one block can be allocated to only one process at a time.

Statement S2: "Variable partition and segmentation suffers from external fragmentation".

Variable partition scheme suffers from external fragmentation; segmentation is one of the variable partition schemes.

Segmentation is similar to dynamic partitioning, only this time process can have several segments, while in dynamic partitioning a partition is accommodating the entire process.

A different memory management approach known as dynamic partitions (also called a variable partition) creates partitions dynamically to meet the requirements of each requesting process.

Hence, the correct options are (A) and (B).

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