a file that contains files and folders of Knoppix contained within
a large, single file containing the exact data to burn to CD, laid out in the proper file system
an exact copy of the data disc to be written
a single file that contains an exact copy of all of the files you add to it, in this case all files on the CD
a specially formatted file containing all the data of the actual, physical disk, including its label
An ISO image (.iso) is an informal term for a disk image of an ISO 9660 file system. More loosely, it refers to any optical disc image, even a UDF image.
