Question

Which type of fragmentation occurs when allocated memory blocks are larger than the requested memory size?

• A. External Fragmentation
• B. Internal Fragmentation
• C. Page fault
• D. Segmentation

Hint:

The extra space is trapped inside the block, not between blocks.

Answer 1

The Correct Option is B

Focus on where the wasted memory lies. If a request needs 3 KB but the allocator hands over a fixed 4 KB frame, then 1 KB is stuck unused inside that frame. No one else can touch it until the frame is freed.

Waste that is trapped within the granted block points to internal fragmentation. Waste that lies in the gaps between blocks would be external fragmentation.

$$\text{Internal waste} = \text{block size} - \text{requested size}$$\[\boxed{\text{Internal Fragmentation}}\]