1.
The ....... contains commands associated with the My Computer window

2.
....... is the layer of a computer system between the hardware and the user program

3.
Which is the layer of a computer system between the hardware and the user program

4.
When you start up the computer the boot up storage at which the BIOS versions manufacturer and data are displayed on the monitor is called

5.
The operating system is the most common type of ...... Software

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