what is computer network ?

Question

what shall I need to create the computer network ?

Answer 1

A computer network is anytime more than one computer or computer like device establishes communication. When you are on the Internet you are connecting to and becoming a part of the largest computer network in the world.

Are you asking about creating your own Local Area Network(LAN)?

Do you want it to be wired or wireless? What do you plan to use it for?

I'll make a leap of faith and assume you want to create a wireless network so you can share your Internet connection with multiple computers at home. If that's not it, feel free to email me.

Let's cover what you need to get Internet access to more than one computer at home, via wireless LAN (local area network).
The concept is the same for WIRED networks. Add Cat5e Ethernet cables and Network Interface Cards (NICs), instead of wireless adapters to each computer. You can use a wired router instead of a wireless router if you plan on being wired only. Treat an Xbox 360 just like any other computer. Xbox 360 needs a wireless adapter too.

1. You order or use your existing Cable, DSL, FiOS, Satellite, or Tin Can Internet access, doesn’t matter what brand of access you have or where you are located geographically in the world. An Ethernet TCP/IP based LAN is the same in China as it is in Germany.

2. Your Internet Service Provider sets up your Internet access and typically either rents or sells you a network bridge. They often refer to this as a “modem”. Actually a complete misnomer since the device does NOT MOdulate or DEModulate.

Prices for residential “High Speed” Internet access vary from approximately $19 per month for low end DSL to $200 per month for the fastest FiOS option in the United States. This varies based on bandwidth, location, and provider.

At this point you have what is commonly referred to as “Broad Band” or “High Speed” Internet access, basically meaning it isn’t dial-up or ISDN.

Now you want to share that “high speed” connection with more than one system. You want to be able to cart your laptop all over the house and stay connected to the Internet as you roam the house and back yard. Yes this will slow everyone down a little bit, but it's really your only choice at home. It is a shared connection. When you and your house mates are downloading at the same time you’ll notice a lower download speed.

1. Confirm that your system has a wireless adapter or get one and install it. It is a hardware device you can buy at CompUSA or Best Buy or your local computer parts store. Costs vary depending on the brand and type you buy from about $20 for a refurbished 802.11 g model to $80 for the top of the line 802.11 N draft 2.0 types. You need one of these for each computer. USB type are better because you can use it with a laptop or desktop without opening the case to install it. You can also use one USB type with multiple computers at different times. USB type that are 802.11 n Draft 2.0 that are Wi-Fi certified are the best.

2. Get a wireless router. I recommend the D-Link DIR-655. Cost is around $140 or so. Get D-Link n series USB wireless adapters if you get the D-Link wireless router. If you get a Netgear wireless router, get Netgear wireless adapters. They work BETTER together if they are the same brand. This isn’t a requirement, merely a suggestion.

2a. If you are setting up a WIRED LAN I recommend Netgear routers and switches. I have a Netgear switch that is still operational after constant use and abuse over ten years.

3. Plug the wireless(or wired) router directly into the Cable or DSL network bridge via an Ethernet cable. DO NOT plug your computer into the Cable, DSL, Satellite or Tin Can network bridge "modem". Plug your wireless router into it.

4. Unplug the electrical cord from your network bridge for 30-45 seconds.

5. Plug the power cable back in to your network bridge.

6. Check the network bridge for green lights.

7. Make sure that the properties of TCP/IP are set to Obtain IP address automatically, and obtain DNS automatically on ALL of your computers, your Xbox, and the router.

8. Turn on or reboot your system(s).

Now you should be able to stay connected to the Internet with all of your computers.

If you can not access the Internet from every computer:

Attempt to log in to your wireless router via your web browser (internet exploder or Firefox) by typing in (http://192.168.1.1/) This address may vary depending on the brand and model of wireless router you purchase. Check the manual for the default IP address and the username and password for your router.
Then log in (Admin and admin typically). Be sure to change the password to something of your own choosing that is LONG. I label the bottom of the routers I set up with the Username and Password using my P-touch. I also label the bottom with the WPA-PSK password. If you do this be sure not to cover the vent holes of the router with the label.
Enable DHCP on the router by following the instructions in the manual.

You only need one wireless router for you wireless LAN. One wireless router can accommodate up to 253 wireless computers. You can use combinations of wired and wireless routers together but typically one wireless router is sufficient for all your needs. In rare instances you may need a wireless router and a switch.

For SECURITY:

1. Don't announce the SSID of your wireless router.
2. Use WPA2-PSK if you can. WPA-PSK if not WPA2. WEP is too easy to get into. If WEP is your only choice I wouldn’t bother enabling it.
3. Input the MAC addresses of all of your computers into the MAC routing table of your wireless router and ONLY ALLOW from the addresses in the table of the wireless router.
4. Turn the SPI firewall of the wireless router ON.
5. Filter anonymous or incomplete packets.
6. Only assign the DHCP pool of the router enough IP addresses for your total number of systems. If you have 3 desktops, 2 laptops and an Xbox 360, you need 6 IP addresses internally, for your LAN. So set your DHCP pool on the wireless router to 192.168.100.1 – 192.168.100.5 for example.

If this all seems too complex and complicated to do, use local.yahoo.com to find a wireless network specialist near you.

This is Wireless for your home LAN. There isn't a wireless Internet. We just have one, Internet. Wi-Fi is a brand name like IBM.

Answer 2

The word ‘’network’’ is used now a days is a broaden view. Here network means connection between two or more electronic device just like computer and computer related device. A computer network consists of a collection of computer, printers and other equipment that is connected together so that they can communicate with each other. The computer network is created by the following components:
1. A computer with land card
2. One Switch or hub
3. Two set of network cable.
Now you can learn more information from the source

Answer 3

A computer network is made up of 2 or more computers that communicate over a physical wired or a wireless medium. Each of these computers shares in common data and/or resources.

To creat a network, you will (of course) need two computers at least, a determination of what medium you will use to communicate between or among all of these computers, a dtermination as to what communication protocol will be used (this is usually through what is called IP, or Internet Protocol) and a determination as to what resources will be shared, and where these resources will be stored. You may assign one or the other computers on the network as where files are stored, or you may attach onto the network what is called a "server."

Answer 4

Szymon has taught Computer Science at a number of Higher Education institutions.

A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server. The Internet itself can be considered as a computer network.

Answer 5

See if you waan to know about computer network then you need to have good knowledge about computers becasue computer network it is vast. Ok i will tel you a simple words what is computer network. A computer network is where to Computer communcate with eachother us Hardware and software. following are the steps u need to have to creat a computer network.
1-----> 2 Computer with Lan Card
2-----> One Switch or Hub
3-----> 2 set of Network Cable (A & B)(as long as u need) clpimed from both side using RJ45 connector

now Following are the steps to start creating a computer network
1------> 1st take Cable (A) pluged one end into the computer Lan Card and the other End into the Switch.
2------> then take Cable (B) pluged one end into the computer Lan Card and the other End into the Switch.
3-----> Then right click on My Network Places then Click Property.
4-----> You will see 2 thing Make New Connection and Local Area Connection.
5-----> Right Click on Local Area Connection and click on property and the one small window will open.
6----> Then click on Internet Protocal (TCP/IP) and click on properties
7----> Then click on Use the Following IP Address.
8------> Then in Ip Address Put the following Ip 192.168.1.2 then click tab and then press ok and the ok . (All this is dont in computer A) following the same thing in computer (B) but change the IP to 192.168.1.3. The Ip should not be same. so that's it ur network is done.

Thank you
Nadeem_sayed (9970205014)

Answer 6

A computer network is a group of computers connected together for the purpose of sharing resources. On the other hand, we can say "a group of computing devices connected via a form of communications technology, which is connected via cables or the Internet in order to gain access to a common server or to share programs, files and other information."

Answer 7

Computer Networking is a meaner computer that are geographically distributed, but connected in a manner to enable meaningful transmission and exchange of data among them.

Answer 8

A network is just a group of computers, usually setup for internet, file and printer sharing. Nothing real special about it. It can make things easier by communicating from pc to pc. For instance on mine, I have a partition on a hard drive for recovery/reinstallation files for each pc on my network. So if I have to format one of them, I then just go to my pc on the network and just reinstall software and drivers from there, that way im not taking a ton of cds with me to the other pc.

Answer 9

Generally network means to connect one port to another port. And Computer network means anytime more than one computer or computer like device establishes communication. If you want you can connect with various computer at a time and that may be UTP,STP and wireless connection. There are many way to set-up a network.
You can set-up different network like,
1. Local Area Network (LAN)
2. Wide Area Network (WAN)
3. Metropolitan Network (MAN)
Attempt to log in to your wireless router via your web browser (internet exploder or Firefox) by typing in (http://192.168.1.1/) This address may vary depending on the brand and model of wireless router you purchase. Check the manual for the default IP address and the username and password for your router.


Attempt to log in to your wireless router via your web browser (internet exploder or Firefox) by typing in (http://192.168.1.1/) This address may vary depending on the brand and model of wireless router you purchase. Check the manual for the default IP address and the username and password for your router.
Then log in (Admin and admin typically). Be sure to change the password to something of your own choosing that is LONG. I label the bottom of the routers I set up with the Username and Password using my P-touch. I also label the bottom with the WPA-PSK password. If you do this be sure not to cover the vent holes of the router with the label.
Enable DHCP on the router by following the instructions in the manual.

You only need one wireless router for you wireless LAN. One wireless router can accommodate up to 253 wireless computers. You can use combinations of wired and wireless routers together but typically one wireless router is sufficient for all your needs. In rare instances you may need a wireless router and a switch.

A computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other. Fig 1 gives an example of a network in a school comprising of a local area network or LAN connecting computers with each other, the internet, and various servers.Broadly speaking, there are two types of network configuration, peer-to-peer Networks and client/server networks.

This training teaches:
• What is Computer Networking.
• What are types of Networking.
• Networking in Internet.
• Types of topologies.
• Models in Networking.

Answer 10

hub or switch , then each computer with a network card, CAT5 cable and they are now hooked up, then you need to set parameters to enable them to talk to each other.