Data Communication

1.Data communication are the transfer of data through some ________

• Linear medium

• Network LAN

• Transmission medium

• Protocol

Protocol is a set of ________

• Data

• Signal

• Rules

• Format

_______ data are continuous and take continuous values

• Analog

• Digital

• Radio

• Microwave

The exchange of data between two devices via some form of transmission medium such as a wire cable is known as ________

• Transmission medium

• Data communication

• Duplex mode

• Multiplexing

It increase the power of signal from low voltage to high.

• Amplifier

• Repeater

• Modem

• Transmitter

Frequency is said to be

• length from one peak to other

• height of the peak

• relationship between two or more signal

• number of waves travel in a fixed time

_______ refers to when data should be sent and how fast the data can be sent

• Accuracy

• Semantic

• Timing

• Syntax

It is the process of measuring the amplitude of a continuous-time signal at discrete instants.

• Encoding

• Sampling

• Quantification

• Modulator

A __________ standard has been legislated by an officially recognised body.

• De facto

• De jure

• American national standard institute

• EIA

The frequency of analog carries signal is modified to reflect binary data is ________

• Phase shift keying

• Frequency shift keying

• Amplitude shift keying

• Quadrature shift keying