- Created by: G.Oldham
- Created on: 26-01-18 10:52
Defragmentation involves rearranging the information on a disk so that files appear in continuous sequences of clusters. This will improve file access times. Most modern operating systems run this process automatically.
As the file size is compressed, the picture quality remains the same - it does not get worse.
As the file size is compressed, the picture quality changes - it gets worse.
The storage drive is divided into a number of clusters. The table of contents serves as an address book, keeping a record of each file and the clusters used to store that file. When a file is deleted, the address to the location on the disk is removed.
This allows the user to restore the system to a previous state which is saved as a backup. This is only usually used if a system malfunctions.
They allow the user to manage the computer. There are many different utility programs and they may vary across operating systems.