Data communication and networking

Types of Switching Techniques In Networking

Switching Techniques Types In Networking:

A switch is hardware are software equipment that is used to provide the connection between two or more than two devices. And a switched network is made of many interlinked nodes.

                    Fig: Types of the switched network 

Circuit Switching:

Circuit switching similarly looks like a telephone call, in which it establishes a dedicated physical path between sender and receiver in order to transmit information, this path is continued until total data is sent to the receiver. This path is not shared with others until the sender and receiver stop communication.
Let us consider an example of circuit switching when you set up a call with someone over the phone, a dedicated path is established between your phone and another person’s phone through a switch this path will continue until the call ends.
It mainly used for telephone communication, and computer to computer communication in circuit switching is not so much efficient.

Advantages:
Circuit switching is very simple.
Delay at every node is negligible.
Disadvantages:
Circuit switching is less flexible.
In this channel, capacity is not properly utilized.
It is used for voice communication and does not use for data communication.


Packet switching:

While considering the disadvantages of circuit switching, packet switching is developed. In which switching technology to provide communication between two computers.When compared with circuit switching packet switching as no dedicated path for data transmission between sender and receiver. In this, all the packets that belong to the same message do not need to go in the same route to reach the destination. Packets go through a different route to reach the destination.
In this packet switching type, the data is transmitted in the form of small discrete blocks called packets. Once the best path is selected between source and destination then the sender will send to data, it converts them into packets and routes them to destination.
The packet routing is decided by network-layer protocols. Further packet switching can be classified into two types.
Datagram Approach:
In this datagram packet switching type, each packet is sent from the source to the destination through different routes.
Virtual Approach:
In this virtual circuit, all packets belonging to the same message are sent the same route from source to destination.
Message switching:
Message switching is best known as the store and forward approach for an entire message. In this method a computer receives a message, stores it until the appropriate route is free then sends it along that route.

Rajeshwari Chiluveru

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Rajeshwari Chiluveru

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