File Name: difference between hub switch bridge and router .zip
- The Differences between Hubs, Switches, and Routers
- 5.6 Bridges and Switches
- Difference Between Hub and Bridge
The Differences between Hubs, Switches, and Routers
A most common question asked by interviewer in a interview of desktop support, IT support, System admin and Network admin is difference between Hub and Bridge, Difference between Switch and router and vice versa. Hub — A hub works is to connect our network devices such as computer, printer etc. When Hub receives data from one system it broadcast to every connected port except the one from which receiving data. Hub has many demerit- It uses more bandwidth of the network due to unnecessary network broadcast. Due to this data collision may occur which may corrupt your data or may need to send again.
Institutions — including, companies, universities and high schools — typically consist of many departments, with each department having and managing its own Ethernet LAN. Naturally, an institution will want its departments to interconnect their departmental LAN segments. In this section, we consider a number of different approaches in which LANs can be connected together. We'll cover three approaches, hubs, bridges, and switches in the following subsections. All three of these approaches are in widespread use today. The simplest way to interconnect LANs is to use a hub. A hub is a simple device that takes an input i.
The crucial difference between the hub and bridge is that the hub works on the physical layer , but the bridge operates on the data link layer of the OSI model. Both hub and bridge serve the different purpose. A hub transmits the data to each device connected to it, it broadcasts the data. On the other hand, a bridge is more intelligent which checks and filter data before forwarding it, this mechanism significantly reduce the network traffic and improve security. Basis for comparison Hub Bridge Basics Used to connect a number of devices.
5.6 Bridges and Switches
The reason for the confusion is understandable. Besides looking similar, all three devices pass along data traffic through connectors called ports. Plus, as these devices become more sophisticated, the functional differences between them continue to blur. To understand the differences between hubs, switches, and routers, it helps to look at their fundamental roles as well as their levels of intelligence. A hub is the least intelligent of the three hardware devices. It serves as a connection point for the computers and other devices such as printers in a network. A hub simply passes along the traffic it receives to the computers connected to it.
Difference Between Hub and Bridge
Repeater — A repeater operates at the physical layer. Its job is to regenerate the signal over the same network before the signal becomes too weak or corrupted so as to extend the length to which the signal can be transmitted over the same network. An important point to be noted about repeaters is that they do not amplify the signal.
In an Ethernet network, there are some networking devices that play their roles at various levels such as hubs, switches and routers. The functions of the three devices are all quite different from one another, even if sometimes they are all integrated into a single device. The following part will focus on the topic—hub vs switch vs router, aiming to clarify differences among them. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.
The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2. Hubs broadcast incoming traffic on all ports, whereas bridges and switches only route traffic towards their addressed destinations. Hubs provide a dedicated physical connection for every device, which helps reduce the possibility that a failure of one computer will cause all computers to lose connectivity.