Q. Back up of a data file will help to prevent:

A
Loss of confidentiality
B
Duplication of data
C
Virus attack
D
Loss of data
Solution:

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).

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