The correct answer is Star.Ring topology is a network topology in which each node connects to exactly two other nodes and forms a single continuous pathway for signals through each node- a ring.It performs better than a bus topology even under the heavy network load.Communication delay is directly proportional to the number of nodes in the network.They can be used to carry circuits or packets or the combination of both circuits or packets.An example of ring topology is Token Ring.Bus topology is a communication system that transfers data between computers or components inside a computer.Buses can be parallel buses (which carry data words in parallel on multiple wires) or serial buses (which carry data in bit-serial form).An example of internal computer buses is MBus, Multibus, Conventional PCI, SS-50 Bus, STEbus, etc.An example of external computer buses is Camera Link, Universal Serial Bus (USB), eSATA, High-Performance Parallel Interface (HIPPI), etc.Futurebus, Thunderbolt, QuickRing, etc are examples of internal and external computer buses.Star topology is an implementation of the spoke-hub distribution paradigm in computer networks.Every host is connected to the central network.All nodes (workplace and other devices) are directly connected to a common central computer, local area network (LAN) called Star topology.It works well under heavy load.The single point of failure for the network is the central hub.Tree topology has a root node and all other nodes are connected to it and form a hierarchy and also known as hierarchical topology.It is mostly used in Wide Area Network (WAN).It is an extension of bus and star topologies.It is a very expensive and heavily cabled topology.This topology can be easily managed and maintained.Image of Star Topology: