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

Working Communication System

Working Communication System

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5 Components Communication

5 Components Communication

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5 Basic Components of Data Communication

Modes of Communication

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

Direction Data

Direction Data

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

Bidirectional

Bidirectional

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

Simultaneously

Simultaneously

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Signals

Electrical Signal

Electrical Signal

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Analog and Digital

Analog and Digital

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  • 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