Which of the following network topologies is most resilient to node failures? 

Mesh topology is the most resilient to node failures due to its structure, where each node is connected to multiple other nodes. In a fully connected mesh, every node has a direct connection to every other node, ensuring that if one connection fails, data can still traverse through alternate paths. This redundancy minimizes the risk of network failure and maintains network availability, which is critical for businesses that rely on continuous access to services and data. Additionally, mesh topology supports robust communication between devices, as it can handle high volumes of traffic and is less likely to experience bottlenecks compared to other topologies. While it is more expensive to implement and maintain due to the extensive cabling and configuration required, the benefits in terms of reliability and fault tolerance make it a preferred choice for mission-critical applications. Option A (Bus Topology) - Bus topology is highly susceptible to failures; if the main cable fails, the entire network goes down, making it unreliable for critical operations. Option B (Ring Topology) - Ring topology relies on a single path for data transmission. If one node fails, the entire network can be disrupted unless a secondary path is implemented. Option C (Star Topology) - While star topology allows easy isolation of devices, the failure of the central hub or switch will bring down the entire network, which reduces its resilience compared to mesh topology. Option E (Tree Topology) - Tree topology has hierarchical layers and is affected by failures in parent nodes, which can lead to larger sections of the network becoming inaccessible.