Which technique allows for viewing file existence even after deletion?

The technique of using file recovery tools is particularly effective for viewing file existence even after deletion. When a file is deleted, the operating system typically removes the reference to the file in the directory structure but does not immediately erase the actual data from the storage medium. This means that until that space is overwritten by new data, the original file's data can often be recovered using specialized software tools.

File recovery tools work by scanning the storage medium for remnants of the deleted files and piecing together the data fragments to restore them. This is critical in digital forensics, as it allows investigators to recover potentially vital evidence that may have been deleted by a suspect or user.

In contrast, static analysis focuses on examining data and structures without any ongoing or future context, while real-time monitoring continuously observes activities without the ability to recover previously deleted files. Cloud storage management pertains to the administration and organization of storage resources, rather than retrieval of deleted file data. Thus, the nature and purpose of file recovery tools make them uniquely qualified for this task.