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Flashcards do conjunto (11)
- 1Methods of data transmissionCircuit Switching
Packet Switching - 2Advantages and disadvantages of Circuit SwitchingDoes not introduce System Latency
Resources reserved even when not in continuous use
Expensive and harder to filter between frequencies - 3Principles of circuit switching1. Dedicated communications channel (circuit) is created to connect the end points.
2. Multiplexing over frequency domain - 4Disadvantages of circuit Switching1. Resources reserved even when not in continuous use
2. Expensive and harder to filter between frequencies - 5Principles of Packet Switching1. Data is divided into small packets of data.
2. Each packet is given a source and destination address
3. Packets are switched over networks until they reach their destination
4. Multiplexing over time domain - 6Advantages of packet switching1. Easy to multiplex over time domain
2. Resources not being used when connection not in use
3. Statistical gain - More connections can be served
4. Reroute data around failed switches - 7Disadvantages of packet switching1. Introduces latency
2. Packets can be lost or re-ordered
3. Packets must be stuck back together - 8Methods of packet switching1. Virtual Circuits
2. Datagram Services - 9Principles of Virtual Circuits1. Endpoint tells network to establish connection
2. Network decides on a route
3. A token are given to endpoints
4. Each packet is sent with token to route it
5. Circuit is torn down - 10Advantages of virtual Circuits1. Ordered Packets - Packets follow same route
2. Less Overhead - Full address not needed
3. Reliable - Network tries to handle packet loss/duplication
4. Network Stack Simplified - Network ensures data reaches destination - 11Disadvantages of virtual circuits1. Complex routers - Scale with bandwith, number of connections, rate of creation/destruction
2. Networks must keep track of every connection crossing it
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- FlashCards sobre Sem título, criado por Daniel Annan em 13-01-2018.
- Criado por
- Daniel Annan
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