Computer Science – 2.1 Networks including the internet | e-Consult
2.1 Networks including the internet (1 questions)
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Bus Topology: In a bus topology, all devices are connected to a single cable (the "bus"). Data transmitted on the bus is received by all devices.
- Advantages: Simple to install and relatively inexpensive due to the minimal cabling required.
- Disadvantages: A break in the bus cable can disable the entire network. Difficult to troubleshoot. Performance degrades with increasing number of devices due to collisions. Security is a concern as all devices see all transmissions.
Star Topology: In a star topology, all devices connect to a central hub or switch. All communication passes through the central device.
- Advantages: Easy to install and manage. A failure of one device does not affect the rest of the network. Easy to troubleshoot. Scalable.
- Disadvantages: Relies on the central hub/switch; if this fails, the entire network fails. More expensive than a bus topology due to the cost of the central device.
Mesh Topology: In a mesh topology, each device is connected to multiple other devices. There are two main types: fully connected (every device connected to every other) and partially connected (devices connected to some, but not all, others).
- Advantages: Highly reliable; multiple paths for data transmission. Excellent fault tolerance. Good bandwidth.
- Disadvantages: Very expensive due to the large amount of cabling required. Complex to install and manage.