What is used to identify users who come back to a

It is a computer programme allowing higher level computer program to interact with a hardware device-

A set of instruction telling the computer what to do is called?

Which of the following SQL commands is used to make permanent changes to the database?

In MICR, C stands for what ?

While __________, data transfers from the customers' machine to the server.

What is the use of the Windows key + D shortcut?

Not a Programming Language -

Structured programming languages such as C, COBOL and FORTRAN were used in which of the following computers?

 What is a firewall?

What is a router used for?