Computer Network Tutorial

Introduction of Computer Network Types of Computer Network Network Topology Computer Networking Architecture Transmission Modes (Data Flow) Basic Networking Devices Integrate Services Digital Network (ISDN)


OSI Model TCP/IP Model

Physical Layer

Digital Transmission Analog Transmission Transmission Media Switching

Data Link Layer

Error detection and Error correction Data Link Control Multiple Access Aloha

Network Layer

Network Layer - Logical Address Address Mapping Unicast Routing Protocol

Transport Layer

Process to Process Delivery User Datagram Protocol Transmission Control Protocol Stream Control Transmission Protocol Session Layer and Presentation Layer

Application Layer

Domain Name System Application Protocol E-mail Cryptography


Classes of Routing Protocols Classification of Routing Algorithms Controlled Access Protocols in Computer Networks Differences between IPv4 and IPv6 Fixed and Flooding Routing Algorithms Advantages and Disadvantages of Fibre Optics Cable APIPA Difference between Active and Passive FTP Fiber Optics and its Types Method of Joining and Fusion of Fiber Optic Cable Define Framing in Computer Network Disadvantages of Computer Network Mesh Topology Diagram in Computer Network Ring Topology in Computer Network Star Topology in Computer Networks 4G Mobile Communication Technology Advantages and Disadvantages of LAN Advantages and Disadvantages of MAN Advantages and Disadvantages of WAN Application Layer in OSI Model Cyclic Redundancy Check Example Data link layer in OSI model Difference between Transport and Network Layer Hamming Code Example Network Layer in OSI Model Session Layer in OSI Model Transport Layer in OSI Model Two Port Network in Computer Networks Uses of Computer Networks What is Computer Network What is Framing in a Computer Network Advantages and Disadvantages of Bus Topology Difference between Star Topology and Bus Topology Subnetting in Computer Network Subnetting Questions and Answers What is Bus Topology What is Network Topology and Types in Computer Networks Access Control in Networking Basic Characteristics of Computer Network Benefits of SOCKS5 Proxy in Computer Networks Computer Network viva Questions Difference between BOOTP and RARP Difference Between Network Topologies and Network Protocols Difference between NFC and RFID Difference Between Point-to-Point Link and star Topology Network Differences Between MSS and MTU Differences Between Trunk Port and Access Port Different Modes of Communication in Computer Networks MIME Protocol in Computer Networks Modes of Communication in Computer Networks Network Attack in Computer Network Port Address in Networking Simplest Protocol in Computer Network Sliding Window Protocol in Computer Network Stop And Wait Protocol in Computer Networks TCP 3-Way Handshake Process in Computer Networks What is a Proxy Server What is APPN What is ICMP Protocol What is Point-to-Point Protocol What is Port Address in Networking What is the HDLC Protocol What is VRRP Protocol Difference Between Analog and Digital Signals Difference Between Hub and Repeater Difference between Repeater and Switch Difference Between Transparent Bridge and Source Routing Bridge Source Routing Bridge in Computer Networks Transparent Bridge in Computer Networks Transport Protocol in Computer Networks Types of CSMA in Computer Networks What is Wired and Wireless Networking Network Security in Computer Network Disadvantages of Extranet Difference Between TELNET and FTP Define Protocol in Computer Networks Guided Transmission Media in Computer Network What is a Gateway in a Computer Network IGMP in Computer Networks LAN Protocols in Computer Networks MAN Meaning in Computer Modulation Techniques in Computer Networks Switching in DCN TCP/IP Applications What is IGMP? What is Modem in Networking What is Non-Persistent CSMA Difference between Cell Splitting and Cell Sectoring Forouzen Computer Network Open Loop and Closed Loop Congestion Control Types of Cluster Computing WAP-Wireless Access Point What are the elements of the Transport Protocol Difference between Gateway and Switch Flow Control in Data Link Layer Body Area Network Flooding in Computer Network Token Ring in Computer Networks VoIP in Computer Networks What is Infrared Transmission Congestion Control Techniques Forward Error Correction (FEC) Switching Techniques What is Telnet in Computer Network

Transmission Mode (Data Flow)

Transmission Mode (Data Flow): Transmission mode refers to the transfer of data from one device to another device through a network. The transmission mode determines the direction of the data.

Transmission Mode (Data Flow)

As we know, the data is converted to bits formats and transmitted in bits. These bits are transmitted through different transmission modes.

These are the following three types of transmission modes.

  1. Simplex mode
  2. Half-duplex mode
  3. Full-duplex mode

Simplex mode

In Simplex transmission mode, the communication between the sender and the receiver can be only in one direction; i.e., this mode is unidirectional. The sender can only send the data, and the receiver can only receive the data. The receiver cannot reply to the message of the sender in this mode. The figure is shown below.

Transmission Mode (Data Flow)

The Simplex mode is a one-way road with traffic in one direction only, and no vehicles are allowed to enter from the other direction.

We can take a example of keyboard and monitor to understand transmission mode better. The keyboard can only send the data to the monitor, and the monitor can only receive data and display it on the screen. The monitor cannot send any data return to the keyboard.

Another example of simplex modes are loudspeakers, TV broadcasting, TV remote, etc.

The main advantage of Simplex mode uses the full capacity of the channel to send data in one direction.

Half-duplex mode

In this transmission mode, the communication is done in both directions, but the communication can be done in one direction at a time. The whole capacity of the channel can be used for both directions. The figure is shown below.

Transmission Mode (Data Flow)

The Half-duplex mode is the one-way road in which the vehicle in the opposite direction of traffic has to wait until the road is empty.

The walkie-talkie is the best example of half-duplex. At the end of the walkie-talkie, both can speak but one can speak at a time, and both cannot speak together.

Full-duplex mode

The communication between the sender and receiver can occur together in the full-duplex transmission mode. The sender and receiver can send or receive the data at the same time.  The figure is shown below.

Transmission Mode (Data Flow)

The full-duplex transmission mode is the two-way road in which traffic can go both ways at the same time.

Full-duplex can be best understood with an example of a telephone. When two people talk on a telephone, both are free to speak and listen at the same time.


Differences between Simplex transmission mode, Half-duplex transmission mode, and Full-duplex transmission mode?

Basic ComparisonSimplex ModeHalf-duplex ModeFull -duplex Mode
Types of Communication directionCommunication in Simplex mode is unidirectional.Communication in Half-duplex mode is bidirectional, but one at a time.Communication in Full-duplex mode is bidirectional and done simultaneously.
Sender/ReceiverThe sender can send the data, and the receiver can only receive the data, but the receiver cannot reply to the sender.The sender and receiver can send and receive the data, but at a time.The sender and receiver can together send and receive the data at the same time.
PerformanceSimplex mode delivers less performance than the other transmission mode.Half-duplex mode delivers less performance than the full-duplex and better the simplex mode.Full-duplex mode delivers better performance than the other transmission mode.
ExampleExamples of simplex modes are keyboard, monitor, speakers, TV broadcasting, TV remote, etc.An example of half-duplex is Walkie-Talkies.An example of half-duplex is a telephone.