What is the Windows taskbar and how is it used?

What will be an ideal response?

The taskbar is normally located at the bottom of the Windows desktop, displaying information about open programs and providing quick access to others. Items displayed in the taskbar can be programs running or not running. An open application displays a program icon in the taskbar. If you are using the Aero interface, when you mouse over the icon, a thumbnail of the open application appears. When you right-click an icon in the taskbar, the Jump List appears, which provides access to some of the major functions of the program. When you mouse over the rectangle to the far right of the taskbar, all windows disappear so you can see the desktop and any gadgets you might have there.