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What is a BUS?
The Bus (BUS) Topology is a network architecture where a group of clients is connected through a shared communication line called the data bus. There are many examples of computer data buses, most commonly found on the motherboard of computers as well as in some versions of Ethernet networks.
The easiest way to connect multiple clients is through the Bus Topology, but issues can arise if two clients want to use the same data bus simultaneously. Therefore, systems using Bus Topology architecture should have plans in place to avoid or prevent collisions.
A true Bus Topology is passive - the computers in the network only listen to the signal and are not responsible for the movement of the signal. However, many active architectures that provide the same logical functions as passive architecture can also be considered Bus Topology. For example, an open Ethernet, while not physical, can still be considered a logical network.
The Bus Topology is akin to a broad-band broadcast channel, where stations connected to the network can hear every operation and transmission.
Ethernet Bus Topology works similar to a large telephone line - before sending a packet, a device must ensure that no other devices on the cable are sending packets. When a device sends a packet onto the data bus, every network card on the network sees and reads that packet. Devices communicate using a protocol called Carrier Sense Multiple Access/Collision Detection (CSMA/CD). Sometimes two cards send packets simultaneously, creating a collision, and the cards decide amongst themselves who will send the packet first. All computers on the network share the data transfer capacity of the cable they are connected to - also known as bandwidth in some references.
What are the Advantages and Disadvantages of Bus Topology?
Advantages
Easy to set up, implement, and expand.
Suitable for small networks that do not require temporary or high-speed connections (quick installation).
Cheaper compared to other topologies.
Cost-effective; only one cable is needed.
Cable faults are easily detected.
Reduced load due to fewer cables.
No need for a central unit.
Disadvantages
Limited cable length and number of stations.
If there is an issue with the cable, the entire network is affected.
Maintenance costs may be higher in the long run.
As more computers are added, traffic increases, and performance decreases (shared bandwidth).
Proper termination is necessary (the network must definitely follow a closed path).
Each transaction should extend to the furthest connection.
Works best with a limited number of nodes.
Data transfer speed is slower compared to other topologies.
The Bus (BUS) Topology is a network architecture where a group of clients is connected through a shared communication line called the data bus. There are many examples of computer data buses, most commonly found on the motherboard of computers as well as in some versions of Ethernet networks.
The easiest way to connect multiple clients is through the Bus Topology, but issues can arise if two clients want to use the same data bus simultaneously. Therefore, systems using Bus Topology architecture should have plans in place to avoid or prevent collisions.
A true Bus Topology is passive - the computers in the network only listen to the signal and are not responsible for the movement of the signal. However, many active architectures that provide the same logical functions as passive architecture can also be considered Bus Topology. For example, an open Ethernet, while not physical, can still be considered a logical network.
The Bus Topology is akin to a broad-band broadcast channel, where stations connected to the network can hear every operation and transmission.
Ethernet Bus Topology works similar to a large telephone line - before sending a packet, a device must ensure that no other devices on the cable are sending packets. When a device sends a packet onto the data bus, every network card on the network sees and reads that packet. Devices communicate using a protocol called Carrier Sense Multiple Access/Collision Detection (CSMA/CD). Sometimes two cards send packets simultaneously, creating a collision, and the cards decide amongst themselves who will send the packet first. All computers on the network share the data transfer capacity of the cable they are connected to - also known as bandwidth in some references.
What are the Advantages and Disadvantages of Bus Topology?
Advantages
Easy to set up, implement, and expand.
Suitable for small networks that do not require temporary or high-speed connections (quick installation).
Cheaper compared to other topologies.
Cost-effective; only one cable is needed.
Cable faults are easily detected.
Reduced load due to fewer cables.
No need for a central unit.
Disadvantages
Limited cable length and number of stations.
If there is an issue with the cable, the entire network is affected.
Maintenance costs may be higher in the long run.
As more computers are added, traffic increases, and performance decreases (shared bandwidth).
Proper termination is necessary (the network must definitely follow a closed path).
Each transaction should extend to the furthest connection.
Works best with a limited number of nodes.
Data transfer speed is slower compared to other topologies.