Introduction to Digital Communications

________is that which is conveyed

• signal

• code

• information

• thoughts

________the physical manifestation of information as produced by the source

• data

• message

• information

• thoughts

______signal is a physical quantity that varies with time, usually in a smooth and continuous fashion

• data

• analog

• digital

• coded

It includes the components, equipment that is being utilized to execute the communication process

• ACS

• DCS

• ECS

• TelCo

In 1837, ________ perfected the Line Telegraphy.

• Tesla

• Marconi

• Graham Bell

• Morse

He introduced the theory of signal transmission in telegraphy

• Morse

• Shannon

• Nyquist

• Tesla

Packet Switching was introduced in ______

• 1964

• 1966

• 1968

• 1970

________ is the entity that is to be exchanged between different computers

• Information

• Data

• Signal

• Message

_______ are nothing but electrical or electromagnetic representation of data

• Message

• Signals

• Information

• Data

To be transmitted, data must be transformed to ________ signals

• electrical

• electronic

• electromagnetic

• magnetic