(a) List one advantage and one disadvantage of Bus topology.

​ Advantages :

●​ Cost-effective: As it requires less cable.

●​ Easy to install

●​ Easy to extend for small networks.

Disadvantages :

●​ Failure of the main backbone brings down the entire network.

●​ Fault isolation is difficult.

●​ Not suitable for large networks

●​ Data collisions are frequent when many devices are connected.

●​ Network speed slows down with heavy traffic.

●​ Security is low as all devices can access transmitted data.

A protocol is a set of rules that need to be followed by the communicating devices in order to have successful and reliable data communication.

The protocol used to transmit hypertext across the web isHypertext Transfer Protocol (HTTP)