Mesh Topology is the network topology that supports bidirectional links between each possible node.

Mesh Topology:
Mesh topology is a type of network topology in which all the nodes are connected to every other node in the network through dedicated point-to-point links. This means that each node has a direct connection to every other node in the network. In a mesh network, there are multiple paths available for data transmission between any two nodes. This redundancy provides high fault tolerance and reliability.

Bidirectional Links:
A bidirectional link refers to a connection or link that allows data to flow in both directions. In a network, bidirectional links enable communication between two nodes by allowing data to be transmitted in both directions simultaneously.

Explanation:
In a mesh topology, each node is directly connected to every other node in the network through a dedicated link. This means that there is a bidirectional link between each possible pair of nodes. The dedicated links ensure that data can flow in both directions between any two nodes in the network simultaneously.

Advantages of Mesh Topology:
1. High Reliability: The redundancy provided by multiple paths in a mesh network makes it highly reliable. If one link or node fails, data can still be transmitted through alternative paths.
2. High Performance: Mesh topology allows for high-speed data transmission as each node has its dedicated link.
3. Scalability: Mesh topology is highly scalable as new nodes can be easily added to the network without affecting the existing connections.
4. Security: Mesh topology provides a high level of security as data can be transmitted directly between nodes without passing through intermediate devices.

Disadvantages of Mesh Topology:
1. Cost: The implementation of a mesh network can be expensive due to the requirement of dedicated links between each node.
2. Complexity: Managing and configuring a mesh network can be complex due to the large number of connections.

Conclusion:
Mesh topology is the network topology that supports bidirectional links between each possible node. It provides high reliability, performance, scalability, and security. However, it can be costly and complex to implement and manage.