Q5. Why is disk defragmentor useful?
Ans. A file is fragmented when it becomes too large for your computer to store in single location on a desk. When this happens, your computer splits the file up and store it in pieces. You can use fragmented files, but it takes your computer longer to access them.
Desk defragmentor speeds up access by rearranging the file and free space on your computer, so that files are stored in contiguous units and free space is consolidated in one contiguous block.