Which of the following steps should a technician take FIRST to prevent an electrical hazard when repairing a PC?

A user contacts a technician to troubleshoot server errors. The user explains that some files will not open on the server, the data backups are operational, and the weather has been bad. The technician notices missing time slots in the event log.
Which of the following should the technician replace to prevent these issues in the future?

Following instructions from the help desk, a company employee turns off a workstation that has a suspected ransomware infection. A technician is dispatched later to investigate the workstation Which of the following should the technician perform FIRST?

A technician is investigating an application that has crashed on a workstation. The application is displaying a generic error. Which of the following tools should the technician use?

A company brings in contractors several times a year to perform inventory, and the contractors use company supplied laptops. The company's security policy states that once the inventory is completed, the contractors should not be able to log in to the laptops until the next inventory.
Which of the following BEST enforces this policy?