Which of the following functions are not performed by

What is the main function of an operating system's kernel?

Which are the input devices that enable direct data entry into a computer system from source documents? 

Which of the following storage media provides sequential access only ?

Which type of printer uses heat to transfer ink onto paper?

A_______is a component of motherboard which absorbs the heat produced by the processor and other components of a computer?

Given below are two statements

Statement I:  Cache memory is faster than random access memory

A key-board has at least:

 Which key must be Unique? 

 Holding the mouse button down while moving an object or text is known as __

______is the measurement of things such as fingerprints and retinal scans used for security access.