Exercise $(3$ min $)$

A modem is a MOdulator$/$DEModulator which translates digital

computer signals into analog signals for telephone wires and

retranslates them at the other end.

The Operating system is the set of programs that control the basic

operations of the computer.

A DBMS is a Hardware or software structure controlling the nature

of$,$ and access to$,$ the information required by a user application

system.

The transfer of structured data, by agreed message standards, from

one computer system to another without human intervention is

known as Electronic Data Interchange.