Question

briefly describe the disk defragmenter program.

Answer 1

You can refer the class 6 book of computer

Answer 2

The free space that is generated when  info from the disk is deleted influences the size that files and prog. use. This is a reason why we see the properties of a file two sizes appear, the real size of the file and the space that the fie is using on the disk we will notice that the difference b /w two decreases.Windows incorporate this tool because the disk become slow as we save new data and del. the old data.