Final answer:
The most common methods of destroying FBI CJIS data are physical destruction, such as shredding or burning, and electronic purging with software tools. Both methods ensure data cannot be reconstructed or retrieved.
Step-by-step explanation:
The most common methods of destroying FBI Criminal Justice Information Services (CJIS) data include physical destruction and electronic purging. Physical destruction usually involves shredding, burning, or pulverizing physical records to ensure that the data cannot be reconstructed or retrieved.
Electronic purging, on the other hand, involves using software tools to wipe electronic records from storage media so that they cannot be recovered by any conventional means. It is important to follow the guidelines set forth by the FBI's CJIS Security Policy to ensure the proper handling and destruction of sensitive information.