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What are network devices ?

Question by Rahul Gohil On 25 March 2020, 10:32:33

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Answer by Rahul Gohil On 25 March 2020, 10:33:42

Network devices are components used to connect computers or other electronic devices together so that they can share files or resources like printers or fax machines. Devices used to setup a Local Area Network (LAN) are the most common types of network devices used by the public.

A LAN requires a hub, router, cabling or radio technology, network cards, and if online access is desired, a high-speed modem. This is much less complicated than it might sound to someone new to networking.

Hub -  Broadcasts  data from one port to all other ports in the network.

Repeater- Regenerates the input data which is subjected to attenuation.  

Switch - Intelligent device which sends data to particular port.

Bridge- Same function as switch but much more primitive and has lesser ports.

Router- Connects all computers from a LAN to internet using same IP. 

 IEEE 802.11- Wi-Fi standard- 802.11 b has speed of 11 Mbps, 802.11 g has a speed of 54 Mbps and 802.11 N uses multiple wireless signals and antennas and has speeds of over 100Mbps

Gateway-Needed when 2 different network technologies are being used.  Acts  as translator.

Connecting Cables- RJ-11(Telephone Cable), RJ 45 (LAN Cable), Twisted pair cables (used in connecting 2 computers), Null Modem Cable (RS232) ,Optical  Fiber Cable(Gigabit Ethernet). 


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