A technician successfully removed malware from a user's computer, and recent scans do not report any infections. However, the computer has begun experiencing issues accessing websites with Internet Explorer after a few hours of use. Some remote websites return error messages, and other sites do not display properly. Which of the following options should the technician utilize NEXT to troubleshoot this issue?

Which of the following account types account types enables and end user to install software without restrictions?

A junior Linux systems administrator needs to update system software.
Which of the following shell commands would allow the administrator to gain the necessary permissions to update the software?

A Linux user report that an application will not open and gives the error only one instance of the application may run at one time. A root administrator logs on ot the device and opens terminal. Which of the following pairs of tools will be needed to ensure no other instance of the software are correctly running?

A customer calls and reports that upon launching the Windows built-in calculator application a UAC dialog appears requiring the customer to enter the password for administrative access.
Which of the following is MOST likely to be causing this?