In an _________ system the user/programmer interacts directly with the computer, usually through a keyboard/display terminal to request the execution of a job or to perform a transaction.

What is a database backup, and how is it used?

What will be an ideal response?

Match the following file types to their description

I. Sockets A. Unbuffered files used to exchange data II. Character devices B. Virtual connections between two processes III. Named pipes C. Provide a FIFO mechanism IV. Block devices D. Buffered files used to exchange data