difference between hub switch bridge and router pdf

Difference Between Hub Switch Bridge And Router Pdf

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The reason for the confusion is understandable. Besides looking similar, all three devices pass along data traffic through connectors called ports.

A Hub is the simplest of these devices. In general, a hub is the central part of a wheel where the spokes come together. This leads to inefficiencies and wastage. As a network product, a hub may include a group of modem cards for dial-in users, a gateway card for connections to a local area network for example, an Ethernet or a token ring , and a connection to a line. Hubs are used on small networks where data transmission is not very high.

Difference between: Hub, Bridge,Switch and Router?

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.

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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.

Difference Between Hub and Bridge

A network is formed when two or more devices connect to share data or resources. A large network may need to be subdivided for efficient frame delivery or the traffic management. Bridges or switches are used to connect these subdivided segments of networks. In a long way, the terms bridge and switch are use interchangeably. Bridge and switch both provide the same functionality but the switch does it with greater efficiency. A bridge connects smaller network segments to form a large network, and it also relays frame from one LAN to another LAN.

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. When the signal becomes weak, they copy the signal bit by bit and regenerate it at the original strength. It is a 2 port device.

5.6 Bridges and Switches

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.

Возможно, это и есть ключ. - Вот именно, - простонал Джабба.  - Он над вами издевается. А вы тем временем погибаете.

Клушар, похоже, не расслышал. Глаза его отсутствующе смотрели в пространство. - Странное дело, ей-богу, все эти буквы - ни на один язык не похоже.

 Я должен был вам рассказать… но думал, что тот тип просто псих. - Какой тип? - Беккер хмуро взглянул на полицейского. - Тот, что вызвал скорую. Он болтал что-то на ужаснейшем испанском, который мне только доводилось слышать.

У Стратмора был смелый план - создать всемирный стандарт шифрования с черным ходом для Агентства национальной безопасности. Он страстно желал разделить эту мечту со Сьюзан, осуществить ее с ней вместе, но знал, что это невозможно. Хотя смерть Энсея Танкадо спасет в будущем тысячи жизней, Сьюзан никогда не примет ничего подобного: она убежденная пацифистка.

 - Ну, что еще - до того как вы отправитесь домой. В одно мгновение Сьюзан все стало ясно. Когда Стратмор загрузил взятый из Интернета алгоритм закодированной Цифровой крепости и попытался прогнать его через ТРАНСТЕКСТ, цепная мутация наткнулась на фильтры системы Сквозь строй. Горя желанием выяснить, поддается ли Цифровая крепость взлому, Стратмор принял решения обойти фильтры.

Увидев тело Хейла, Стратмор вздрогнул от ужаса. - О Боже! - воскликнул.  - Что случилось. ГЛАВА 93 Причастие. Халохот сразу же увидел Беккера: нельзя было не заметить пиджак защитного цвета да еще с кровавым пятном на боку.

The Differences between Hubs, Switches, and Routers
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