The network topology in which devices are not linked to each other and where hub acts as a central controller is

The correct answer is Star

Key Points

• A star topology is a network configuration where all devices are connected to a central hub or switch.
• The central hub acts as a controller and is responsible for managing communication between devices.
• It is easy to add or remove devices in a star topology without disrupting the rest of the network.
• Star topology is more reliable because if one device fails, it does not affect the entire network, as only the connection to the hub is impacted.

Additional Information

• Mesh Topology: In a mesh topology, every device is connected to every other device. This configuration provides high redundancy and reliability but is expensive and complex to set up and maintain.
• Ring Topology: In a ring topology, each device is connected to exactly two other devices, forming a circular data path. Data travels in one direction (unidirectional) or both directions (bidirectional), but a failure in one device can disrupt the entire network unless a dual ring is used.
• Tree Topology: Tree topology is a hierarchical structure where devices are arranged in the form of a tree. It combines the features of star and bus topologies and is used in large networks. However, if the root node or central hub fails, the entire network can be affected.
• Hub: A hub is a basic networking device that connects multiple devices in a network. In a star topology, the hub is the central point of communication and is responsible for forwarding data to the appropriate devices.