Data Communication in Computer Network: Definition of Communication for GRE 2021

Get unlimited access to the best preparation resource for UGC : Get detailed illustrated notes covering entire syllabus: point-by-point for high retention.

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
5 Components Communication

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
  • Half Duplex: If the data travels in both directions between two workstations or systems but not at same time.
Bidirectional
  • Full Duplex: If the data travels in both directions between two workstations or systems is called as full duplex mode of communication simultaneously.
Simultaneously

Signals

Electrical Signal
Analog & Digital
  • 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

Developed by: