DATA BACKUP       A  data backup  is the result of copying or archiving files and folders for the purpose of being able to restore them in case of data loss.       Data loss can be caused by many things ranging from computer viruses to hardware failures to file corruption to fire, flood, or theft (etc). If you are responsible for business data, a loss may involve critical financial, customer, and company data. If the data is on a personal computer, you could lose financial data and other key files, pictures, music, etc that would be hard to replace.   As part of a data backup plan, you should consider the following:   What data (files and folders) to backup  What compression method to use  How often to run your backups  What type of backups to run*  What kind of media on which to store the backups  Where to store the backup data for safekeeping         2.  Cryptography     Cryptography includes techniques such as microdots, merging words with images, and othe...
 
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