Computer virus is: 

_____are the fastest and the most expensive computers. 

Excel files have a default extension of:

In which of these memory access schemes, separate Read / Write heads are required? 

A process knows as______ is used by large retailers to study trends. 

“World Wide Web" is made by: 

Which command allows you to reduce fragments of file and optimize the performance of disk? 

Which is not the extension of picture file on computer