A technician recently installed a new secondary hard drive in a Windows 10 desktop. After the installation, the computer displayed the following error message: No Operating System Found. However, after unplugging the new hard drive, the error message no longer appeared. The technician then reconnected the new drive to continue troubleshooting.
Which of the following steps should the technician take NEXT?

The IT department is implementing three-factor authentication for traveling users who connect to the network via VPN. Which of the following BEST addresses this request?

A user believes there is a virus on a laptop. The user installs additional real-time protection antivirus software but is now experiencing extremely slow performance on the laptop.
Which of the following should a technician do to resolve the issue and avoid recurrence?

A technician is installing a new system in a facility that requires zero downtime. The facility uses a backup generator in case of power loss. Into which of the following power sources should the technician plug the system to offer optimal uptime?

A customer has called the help desk because a word processing application will no longer open.
It was working fine earlier, but the user had to close a document quickly. An error message popped up about a network resource, and then the document crashed. Now, when the user clicks on the icon to launch the application, it does not give an error and will not open. Which of the following should a technician do FIRST?