Encryption is the process of conversion of data into a form that cannot be easily understood by anyone except those possessing special information, usually referred as a key. This is done using an algorithm. Name the algorithm.

At times the hard disk of a system fails and loses all the files stored in it. Thus, in order to restore original files at the time of such failures what advice will you give to a multinational organization manufacturing apparels?

What is System software?

What is the utility of disk cleanup?