131. Which of the following separates primary file and extension is
132. In Microsoft windows, the graphical pattern on the desktop used as background for windows is
133. All of the following are task performed by the operating system except
134. Which of the following is not an operating system?
135. Operating system is like a
136. Underlined character on the menu or dialog box known as
137. Which key deletes text before, or to the left, of the insertion point?
138. The chunks of a memory are known as
139. Start / restart the computer is called
140. Which file is transferred when computer is start up?
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