Which network among the following is connected to a central device that acts as a hub a star topology B ring topology C mesh topology?
Star topology is a network topology in which each network component is physically connected to a central node such as a router, hub or switch. Show
In a star topology, the central hub acts like a server and the connecting nodes act like clients. When the central node receives a packet from a connecting node, it can pass the packet on to other nodes in the network. A star topology is also known as a star network. Advertisement Techopedia Explains Star TopologyStar networks require a point-to-point connection between the central node and connecting devices. To improve communication between the devices on the network, the central node can provide signal reconditioning and amplification services. Star topologies are often used in home networks. The benefits of a star network topology include the following: Geometric representation of how the computers are connected to each other is known as topology. There are eight types of topology – Mesh, Star, Bus, Ring, Hybrid, Tree, P2P and Daisy chain. Types of TopologyThere are mainly eight types of topology in computer networks:
Mesh Topology
There are two types of Mesh topology:
Advantages of Mesh topology1. No data loss: No data traffic issues as there is a dedicated link between two devices which means the link is only available for those two devices. Disadvantages of Mesh topology1. Amount of wires required to connected each system is tedious and headache. Star Topology
If one device wants to send data to other device, it has to first send the data to hub and then the hub transmit that data to the designated device. The central device is known as hub and other devices connected to hub are called clients. Generally Coaxial cable or RJ-45 cables are used to connect the clients to the hub. Advantages of Star topology
Disadvantages of Star topology
Bus Topology
CSMA: This method is developed to decrease the chance of collisions when two or more devices starts sending the signal at the same time. CSMA CD (Carrier Sense Multiple Access with Collision Detection): In this method, a device monitors the transmission medium after it sends the data to see if the transmission was successful. If successful, the device marks the communication successful else it sends the data again. Advantages of bus topology
Disadvantages of bus topology
Ring Topology
If a device wants to send data to another device then it sends the data in one direction, each device in ring topology has a repeater, if the received data is intended for other device then repeater forwards this data until the intended device receives it.
Advantages of Ring Topology
Disadvantages of Ring Topology
Hybrid topology
Advantages of Hybrid topology
Disadvantages of Hybrid topology
Tree topology
Advantages of Tree topology
Disadvantages of Tree topology
P2P (Peer to Peer) TopologyIn Peer to Peer topology, two devices are connected to each other directly. There is no client and server in P2P topology as both the devices serve the purpose of client and server both. Torrent is an example of P2P topology as one computer can download the data as well as upload the data to another computer. In P2P, these two devices can be two computers, routers, switches etc. The client is the computer that requests the data and server is the computer that serves the request by sending data. In P2P, both the devices can request as well as send the data. Con: The biggest disadvantage of P2P network is the security. A computer connected to another computer using P2P can read and write the data on the computer. Daisy Chain TopologyIn Daisy Chain Topology, all devices are connected in a linear fashion. Consider it as a ring topology where the last device is not connected to the first device. Every device in the daisy chain network is connected to immediate left and right neighbour devices, except the first and last device. The intermediate device helps in propagating the signal by relaying it until it reaches the destination. Consider ring topology as an advanced version of this topology, by joining first and last devices in this topology a ring topology can be formed. Which network is connected to a central device called hub?A star network is a local area network (LAN) topology in which all nodes -- personal computers (PCs), workstations or other devices -- are directly connected to a common central computer that is often referred to as a hub.
Which topology uses hub as central?The Star Topology (Hierarchical)
In a star topology, computers aren't connected to one another but are all connected to a central hub or switch.
What type of connection connects computers to the central hub in a star topology?In star topology, each computer is connected to a central hub using a point-to-point connection.
What is central hub in star topology?In a star topology, the central hub acts like a server and the connecting nodes act like clients. When the central node receives a packet from a connecting node, it can pass the packet on to other nodes in the network. A star topology is also known as a star network.
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