On which two occasions is it most likely that a technician will have to perform a clean operating system installation if a backup has not been performed? (Choose two.)

On which two occasions is it most likely that a technician will have to perform a clean operating system installation if a backup has not been performed? (Choose two.)

• The existing operating system is corrupted.
• The computer is being moved to a different network.
• A user requires access to a new printer.
• The existing security software requires upgrading.
• A new replacement hard drive is installed in a computer.

Exam with this question: IT Essentials v7.0 - A+ 220-1002 Certification Practice Exam Answers