Answer: Option B
Star topology is a network topology in which all devices are connected to a central hub or switch. The central hub or switch acts as a mediator, allowing each device to communicate with other devices on the network. The star topology is widely used in modern computer networks due to its advantages in terms of reliability, scalability, and ease of maintenance.
In large networks, where the number of devices is high and the network traffic is substantial, star topology is preferred over other topologies. This is because of the following reasons:
Scalability: In star topology, adding new devices to the network is easy, and it does not affect the rest of the network. This makes it easy to scale the network as per the requirements.
Reliability: In a star topology, if one device fails, it does not affect the rest of the network. Each device is connected to the central hub or switch, and the failure of one device does not affect the communication of other devices on the network.
Maintenance: Maintenance of a star topology network is relatively easy. Each device can be easily removed, added, or replaced without affecting the rest of the network. It is easy to diagnose problems, and faults can be quickly identified and fixed.
Performance: In star topology, the data transfer rate is high because each device has a dedicated link to the central hub or switch, which eliminates the possibility of collisions.
On the other hand, other topologies such as mesh, ring, and bus are not suitable for large networks. Mesh topology requires a lot of cabling, and the complexity increases with the number of devices on the network. Ring topology can suffer from data collisions and transmission errors, and adding new devices is difficult. Bus topology is not scalable, and adding new devices reduces the network performance.
In conclusion, the star topology is the best choice for large networks due to its scalability, reliability, maintenance, and performance advantages.