Question

______ is a process of retrieving, deleting, corrupted and lost data from secondary storage devices.
1. Data recovery
2. Data mining
3. Data discovery
4. Data decryption

Answer 1

Correct Answer - Option 1 : Data recovery

The correct answer is Data recovery.

• In computing, data recovery is a process of retrieving inaccessible, lost, corrupted, damaged, or formatted data from secondary storage, removable media, or files.
  • Data recovery is the process of restoring data that has been lost, accidentally deleted, corrupted, or made inaccessible.
  • Data recovery is possible because a file and the information about that file are stored in different places.

• Data mining, also known as knowledge discovery in data (KDD), is the process of uncovering patterns and other valuable information from large data sets.
  • Data mining is the process of analyzing massive volumes of data to discover business intelligence that helps companies solve problems, mitigate risks, and seize new opportunities. 
  • Using a range of statistical techniques to analyze data in different ways, users can identify patterns, trends, and relationships they might otherwise miss.
• Decryption is the process of transforming data that has been rendered unreadable through encryption back to its unencrypted form.
  • In decryption, the system extracts and converts the garbled data and transforms it into texts and images that are easily understandable not only by the reader but also by the system.
  • Decryption may be accomplished manually or automatically.
  • It may also be performed with a set of keys or passwords.