Circuit Switching, Packet Switching, Virtual Circuit Networks and Datagram Networks
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Circuit Switching, Packet Switching, Virtual Circuit Networks and Datagram Networks
- 3. Circuit Switching Establishes a dedicated physical path between the sender and receiver of the message before a message is delivered The entire message travels through the established path from sender to the receiver Received Message is Acknowledged by Receiver Same as Telephone Communication
- 5. Pros of Circuit Switching a)Dedicated path/circuit provides guaranteed data delivery b)is suitable for long continuous transmission. c)Uses Connection Oriented Services
- 6. Cons of Circuit Switching a) Waste of bandwidth if its Idle. b) Require more bandwidth. c) Time Required to establish a link is too long
- 8. Packet Switching doesn’t establish any physical connection before the transmission starts Message is divided into Packets and routed Independently Uses Connection Less Services
- 10. Pros of Packet Switching a) High Data Transmission b) No time Lost for Establishing Link c) Faster d) Independent Travel
- 11. Cons of Packet Switching a) Packets May Lost their Routes b) Wrong Order of Packets c) Large Amount of Resources needed to handle Packets
- 13. Circuit Switching Packet Switching Connection Oriented Connection Less Entire Message Have to follow same route during transmission Entire Message can be divided and routed Independently Implemented at Physical Layer Implemented at Network Layer Waste of bandwidth if Idle No Waste of bandwidth if Idle Initially designed for Voice Transmission Initially designed for Data Transmission
- 15. Virtual Circuit Networks Is a packet switching methodology but establishes Link before communication Entire Message must have to follow same Link to destination is connection orientated Virtual circuit is cleared after the data transfer is completed
- 16. Pros of Virtual Circuits Networks a) Uses Connection Oriented Services b) Can use Diferent Physical Links each time
- 17. Cons of Virtual Circuits Networks a) Link Setup Time b) Resilience to the loss of a trunk i.e. no dynamic switching in case of link failure
- 19. Datagram Networks Is a packet switching methodology but no any Dedicated Link Message have to divided into Datagrams and Each Packets are treated Independently Connection Less
- 21. Pros of Datagram Networks a) It is connectionless service b) Every datagrams are treated Independently c) Faster
- 22. Cons of Datagram Networks a) Not Reliable b)Packet May lost and no Service for Retransmission c) Need of High Resources
- 23. Possible Questions a) Explain about Circuit Switching with Pros and Cons b) Explain about Packet Switching with Pros and Cons c) Explain about Virtual Circuit Networks with Pros and Cons d)Explain about Datagram Networks with Pros and Cons e) Compare Circuit Switching and Packet Switching f) How Virtual Circuit Networks are difer from Circuit Switching g) Compare Virtual Circuit Networks with Datagram Networks.
- 24. Next Lecture Dial Up Modem DSL Hybrid Fiber Coaxial Cable Wireless Networks
- 25. Thank You !!!!