Data Communication in Computer Network: Definition of Communication for Competitive Exams 2020

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Data Communication in Computer Network: Definition of Communication (Computer Science)

Data Communication in Computer Network

  • Topics:

  • Definition of Communication

  • Components of Communication

  • Working of Communication System

  • Modes of Communication:- Simplex, Half-Duplex and Full-Duplex

  • Signals:- Analog and Digital Signals

Definition of Communication

  • The process of creating and understanding through exchange of messages or symbolic interactions.

  • The information is exchanged between individuals through common system of symbols and signs of behaviour.

  • We send and receive messages in communication process. It is a two-way process.

  • The devices which need to be the integral part of the communication system can be hardware and software.

Working of Communication System

Image of Working of Communication System

Image of Working of Communication System

Image of Working of Communication System

Image of 5 Basic Components of Data Communication

Image of 5 Basic Components of Data Communication

Image of 5 Basic Components of Data Communication

5 Basic Components of Data Communication

Modes of Communication

Simplex: In this mode of communication, direction is unidirectional i.e. in one direction.

Image of Direction of Data

Image of Direction of Data

Image of Direction of Data

Half Duplex: If the data travels in both directions between two workstations or systems but not at same time.

Image of Direction of Data (bidirectional)

Image of Direction of Data (Bidirectional)

Image of Direction of Data (bidirectional)

Full Duplex: If the data travels in both directions between two workstations or systems is called as full duplex mode of communication simultaneously.

Direction of Data and Simultaneously

Direction of Data and Simultaneously

Direction of Data and Simultaneously

Signals

Image of Electrical Signal

Image of Electrical Signal

Image of Electrical Signal

Image of Analog Signal and Digital Signal

Image of Analog Signal and Digital Signal

Image of Analog Signal and Digital Signal

  • Analog Signals: These are in the continuous wave form. These can have infinite range of values and they smoothly get changed with the change in the time period.

  • Digital Signals: These signals are discrete and they have two definite values i.e. 0 or 1 (down and up). These are easier to work as compared to the analog signals.

Mcq

Q1.In broad sense, a railway track is an example of?

Options:

  1. Simplex

  2. Half-duplex

  3. Full-duplex

  4. All of these

Q1.In broad sense, a railway track is an example of?

Options:

  1. Simplex

  2. Half-duplex

  3. Full-duplex

  4. All of these

Q2.A device that converts digital signals to analog signals are?

Options:

  1. A packet

  2. A message

  3. A Modem

None of these

Q2.A device that converts digital signals to analog signals are?

Options:

  1. A packet

  2. A message

  3. A modem

  4. None of these

Q3.Compared to analog signals, digital signals are:

Options:

  1. Faster transmission of data

  2. Are more accurate

  3. Both 1 and 2

  4. None of these

Q3. Compared to analog signals, digital signals are:

Options:

  1. Faster transmission of data

  2. Are more accurate

  3. Both 1 and 2

  4. None of these

# Definition of Communication

# Working

#Components

#Simplex Communication

#Half-Duplex Communication

#Full-Duplex Communication

#Analog Signals

#Digital Signals

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