Describe a virtual machine.

What will be an ideal response?


A virtual computer or virtual machine (VM) is software that simulates the hardware of a physical computer. Using this software, you can install and run multiple operating systems at the same time on a PC. These multiple instances of operating systems can be used to train users, run legacy software, and support multiple operating systems.

Computer Science & Information Technology

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students’ test grades for a class of 40 students

Write an array declaration and any necessary supporting classes to represent the statement.

Computer Science & Information Technology

The Ctrl+Alt+Del keys can be used to lock your Windows workstation

Indicate whether the statement is true or false

Computer Science & Information Technology

A monitor should be placed directly in front of the user about an arm's length away, and the top of the screen should be no more than 12 inches above the user's eyes once the user's chair is adjusted.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

After a company rolls out software updates, Ann, a lab researcher, is no longer able to use lab equipment connected to her PC. The technician contacts the vendor and determines there is an incompatibility with the latest IO drivers. Which of the following should the technician perform so that Ann can get back to work as quickly as possible?

A. Reformat and install the compatible drivers. B. Reset Ann's equipment configuration from a backup. C. Downgrade the PC to a working patch level. D. Restore Ann's PC to the last known good configuration. E. Roll back the drivers to the previous version

Computer Science & Information Technology