Podcast
Questions and Answers
Which type of switching technique is giving way to packet-based IP technology?
Which type of switching technique is giving way to packet-based IP technology?
In packet-switched networks, how are messages transmitted?
In packet-switched networks, how are messages transmitted?
Which type of switching technique requires a dedicated path to be established between the source and destination before data transfer?
Which type of switching technique requires a dedicated path to be established between the source and destination before data transfer?
Which layer of the OSI model is circuit switching implemented in?
Which layer of the OSI model is circuit switching implemented in?
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Which switching technique was initially designed for voice transfer?
Which switching technique was initially designed for voice transfer?
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In packet switching, how are data packets routed from the source to the destination?
In packet switching, how are data packets routed from the source to the destination?
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In circuit-switched networks, what kind of connection is established between the source and the destination?
In circuit-switched networks, what kind of connection is established between the source and the destination?
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What technique is used in analog-based telephone transmission systems to transmit multiple voice frequencies over the same line?
What technique is used in analog-based telephone transmission systems to transmit multiple voice frequencies over the same line?
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In circuit-switched networks, what happens when there is silence during a conversation?
In circuit-switched networks, what happens when there is silence during a conversation?
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Which of the following is a characteristic of packet-switched networks?
Which of the following is a characteristic of packet-switched networks?
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What is the difference between analog circuit switching (FDM) and digital circuit switching (TDM)?
What is the difference between analog circuit switching (FDM) and digital circuit switching (TDM)?
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In circuit-switched networks, what happens when one party hangs up the call?
In circuit-switched networks, what happens when one party hangs up the call?
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Which of the following is a characteristic of circuit switching?
Which of the following is a characteristic of circuit switching?
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Which of the following is a disadvantage of circuit switching compared to packet switching?
Which of the following is a disadvantage of circuit switching compared to packet switching?
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Which of the following is a characteristic of packet switching?
Which of the following is a characteristic of packet switching?
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In which switching technique are individual packets of the message received out of order and need to be reassembled at the destination?
In which switching technique are individual packets of the message received out of order and need to be reassembled at the destination?
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Which of the following is a disadvantage of packet switching compared to circuit switching for applications like high-quality voice calls?
Which of the following is a disadvantage of packet switching compared to circuit switching for applications like high-quality voice calls?
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Which layer of the OSI model is responsible for implementing packet switching?
Which layer of the OSI model is responsible for implementing packet switching?
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Study Notes
Circuit Switching
- A connection-oriented network switching technique
- A dedicated path is established between the source and the destination before data transfer commences
- The path is relinquished once the data is transmitted
- It is inflexible in nature since data packets are routed along the same dedicated path
- Initially designed for voice transfer
- The entire message is received in the order sent by the source
- Implemented at Physical Layer
Circuit Switched Networks
- Connection-oriented networks
- A dedicated route is established between the source and the destination
- The entire message is transferred through it
- Originally developed for the analog-based telephone system
- Analog circuit switching (FDM) has given way to digital circuit switching (TDM)
- Digital circuit switching maintains the connection until broken
- Bandwidth is continuously reserved, and "silence is transmitted" just like digital audio
Analog Circuit Switch (FDM)
- A dedicated connection is made between two parties in analog-based telephone transmission systems
- Multiple voice frequencies are placed on the same line via frequency division multiplexing (FDM)
- Connections are maintained by all the switches the signals have to traverse
Packet Switching
- A connectionless network switching technique
- The message is divided and grouped into a number of units called packets
- Packets are individually routed from the source to the destination
- No need to establish a dedicated path from the source to the destination
- Each packet is routed separately, making it flexible in nature
- Initially designed for data transfer
- Packets may be received out of order, requiring reassembly at the destination
- Implemented at Network Layer
Packet Switched Networks
- Connectionless networks
- The message is divided and grouped into a number of units called packets
- Packets are individually routed from the source to the destination
- It is a store and forward transmission
- Data is processed and transmitted, not only at the source but at each switching station
Comparison of Circuit Switching and Packet Switching
- Circuit switching is suitable for long continuous transmission, like voice calls
- Packet switching is unsuitable for applications that cannot afford delays in communication, like high-quality voice calls
- Circuit switching guarantees better resource utilization, but has poor bandwidth usage
- Packet switching ensures better bandwidth usage, but has a higher initial cost
- Circuit switching has a high time required to establish a connection, while packet switching has a lower delay in delivery of packets
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Description
Test your knowledge on the differences between circuit switching and packet switching technologies. Learn about how packet switched networks function and how messages are routed from the source to the destination. Engr.Ruel G.Grafia, MSIT provides insights on circuit and packet-switching techniques.
