FUNDAMENTALS OF COMPUTER

TROUBLESHOOTING COMPUTER ISSUES

IDENTIFYING HARDWARE SOFTWARE NETWORK PROBLEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In which scenario would file recovery software NOT work to retrieve a deleted file?
A
If the file has been overwritten
B
If the Recycle Bin has been emptied
C
If the file has been renamed
D
If the file has been deleted by a virus
Explanation: 

Detailed explanation-1: -The Hard Drive Recovery from Overwritten Hard Drive is impossible as it is an irreversible process. The reason being, when you overwrite the data, you re-magnetize the HDD magnetic domains. Hence, you physically eliminate data formerly saved on the location.

Detailed explanation-2: -Yes-you can recover a previous version of an overwritten file using the File History feature in Windows, or the Time Machine tool in MacOS, if they have already been enabled on your device.

Detailed explanation-3: -When Windows deletes a file, it moves it to a specific hard drive sector and hides it from the operating system. Even after emptying the Recycle Bin, there is still a chance of data recovery if no new data is written on those specific sectors where the deleted files exist.

Detailed explanation-4: -Data recovery doesn’t complete or fails. The files have been corrupted or damaged before recovery. The files have been encrypted due to virus or malware infection. New data has overwritten the files.

Detailed explanation-5: -To make sure that a single file can’t be recovered, you can use a “file-shredding” application such as Eraser to delete it. When a file is shredded or erased, not only is it deleted, but its data is overwritten entirely, preventing other people from recovering it.

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