In shell scripting, which symbol represents all files in

In database, a fields is a

To select the entire document which of the following shortcut keys is used? 

Which of the following keys is not on the number keypads?

What is the key characteristic of a real-time operating system?

Which of the following is a graphic package?

One should click ___________ in order to move from one worksheet to another in MS-Excel workbook. 

The number of pixels displayed on a screen is known as

Vacuum Tubes were used in which generation of Computers?

Which layer of the OSI model provides the interface between the user and the network?

_________ term is used for those hardware devices that are not part of the main computer system and are often added later to the system.