Which of the following directly result in internal fragmenta

Which of the following directly result in internal fragmentation? Select ALL the correct answers Adding padding to a block to meet the double-word alignment requirement. Maintaining the heap\'s structure using block headers. Not coalescing adjacent free blocks to form a larger block to meet the required block size. Splitting a free block that is larger than the required block size. Using the next-fit placement policy to find a suitable free block.

Solution

Answer:

Adding padding for the alignment of the double-word results in internal fragmentation. The internal fragmentation occurs when unused space left in the block. For filling the unused space of the block to get the proper alignment of the double-word, adding padding is required. Therefore, Adding padding results in internal fragmentation.

Hence, the option 1 is correct.

Maintaining the heap’s structure using the block headers directly results in the internal fragmentation. The heap data structure uses the malloc function to allocate the space in the memory to the data. This memory allocation leads to malloc internal fragmentation.

Hence, the option 2 is correct.

The coalescing is used to combines the adjacent free blocks and form a larger block in the memory. When the coalesced does not occur between the adjacent, then the internal fragmentation occurs if there is a need for the larger blocks.

Hence, the option 3 is correct.

Splitting a free block that is larger than the required block size results in the internal fragmentation.

Hence, the option 4 is correct.

The next-fit placement policy finds and allocates the blocks which are suitable. If some blocks are small, then it would also be suitable, but if the requirement of the block is of the same size, then internal fragmentation happens.

Hence, the option 5 is correct.