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ROUTER HOW ITS WORK

A  ROUTER is a device that sends packets of data between different networks.
A packet is data which also contains the address of the destination.  to send the packet between routers until it reaches its destination. This is how your LAN connects to the wider Internet. So when you enter a search term on Google, your router directs this packet to Google’s servers for processing. Routers may seem complicated and beyond your understanding, but they're actually quite simple.
Take mail as an example. If you want to send a letter to one of your housemates, you might just address it with “Room A”. But what happens if you want to send a letter to your best friend who lives in “Room A” of a different house? You would need more information to differentiate.
So you add a zip code. But they live in a different state, which you can’t easily get to. So you hand it over to your friendly mail carrier and using the address and zip code, the mail carrier will make sure it ends up at the correct destination, even if it means passing the letter over to a local mail carrier.
What Is It Good For?
Sending packets between two different networks is technically a router’s only job. However, actually include quite a lot more than that:
·         4-8 port switch for the LAN which enables local sharing of services like printers.
·         Network Address Translator (NAT) used to assign one set of IP addresses within the LAN and one set outside the LAN to your ISP or a Wide Area Network (WAN).
·         Dynamic Host Configuration Protocol (DHCP) which assigns IP addresses to each device connected to the LAN.
·         Firewall to protect the LAN.
·         WAN Port to connect the Router to a modem which provides broadband services from your Internet Service Provider (ISP).
·         Wireless broadcast letting you connect devices without cables.
Recommended Router Model
The  is one of the best and highest rated routers out there. It has some of the best networking and wireless performance of all its peers while also being great value for money.
Before buying any  though make sure that it’ll be compatible with your ISP and.
Hubs, Switches, Routers in a Nutshell
·         Hubs and switches connect computers to create a LAN.
·         Switches, unlike hubs, know which device the information is intended for and sends it there.

·         Routers on the other hand can send packets between LANs, while also assigning IP addresses, acting as a switch and protecting your LAN.

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