Guy this is how the Computer works in Network Environment Information and communication are two of the most important strategic issues for the success of every enterprise. While today nearly every organization uses a substantial number of computers and communication tools ( telephones, fax, personal hand held devices), they are often still isolated. While managers today are able to use the newest applications, many departments still do not communicate and much needed information cannot be readily accessed.

Computer networks allow the user to access remote programs and remote databases either of the same organization or from other enterprises or public sources. Computer networks provide communication possibilities faster than other facilities. Because of these optimal information and communication possibilities, computer networks may increase the organizational learning rate, which many authors declare as the only fundamental advantage in competition.

Guys way to categorize the different types of computer network designs is by their scope or scale. For historical reasons, the networking industry refers to nearly every type of design as some kind of area network.

Common examples of area network types are: LAN - Local Area Network WLAN - Wireless Local Area Network WAN - Wide Area Network MAN - Metropolitan Area Network

SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network.

CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network PAN - Personal Area Network .

DAN - Desk Area Network LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution.

What are Different Classes of IP Address.

there are 5 different classes of IP addresses.

Class A:-1 to 126
Class B:-128 to 191
Class C:-192 to 223
Class D:-224 to 239 Multicast Addresses
Class E:-240 to 254 Scientific Purpose


The 127.0.0.1 IP Address is reserved for the Loopback testing purpose, to see whether Network Adapter of Particular PC is working or not .
So can Ping this IP Address :-127.0.0.1 .

If you get the reply from this IP Address that means Network Adapter or Ehternet Card is working Properly.

Guys Network and Networking have grown over past 15 years . now a days it is necessary to access the share folders ,share data and Share Network resources ,due to timely act matters and necessity of today's world .

Hub is device which were used to connect 2 computers together to share the network resources or have communication between 2.

this is network is actually one collision domain and one broadcast domain .

Switch breaks up or Separates Collision domain but still it is one broadcast domain.

Router provides a separate broadcast domain for each interface.

Hello Guys this is one of the most important thing in network ,How the packets work over the internet .

There are seven Layers in OSI MODEL which has great importance in the field of network .

Seven layers are :-
1. Application Layer
2. Presentation Layer
3. Session Layer
4. Transport Layer
5. Network Layer
6. Data link Layer
7. Physical Layer.

To remember these layers one of the easiest way is

All People Seems To Need Data Processing .

Configuring your Cisco RouterIf you have just turned on the router, it will be completely unconfigured. If it is already configured, you may want to view its current configuration. Even if it has not been previously configured, you should familiarize yourself with the show commands before beginning to configure the router. Enter privileged mode by issuing the command enable, then issue several show commands to see what they display. Remember, the command show ? will display all the showcommands aavailable in the current mode.

Definately try out the following commands:
Router#show interfacesRouter#show ip protocolsRouter#show ip routeRouter#show ip arp When you enter privileged mode by using the command enable, you are in the top-level mode of privileged mode, also known in this document as "parent mode." It is in this top-level or parent mode that you can display most of the information about the router. As you now know, you do this with the show commands. Here you can learn the configuration of interfaces and whether they are up or down. You can display what IP protocols are in use, such as dynamic routing protocols. You can view the route and ARP tables, and these are just a few of the more important options.

As you configure the router, you will enter various sub-modes to set options, then return to the parent mode to display the results of your commands. You also return to the parent mode to enter other sub-modes. To return to the parent mode, you hit ctrl-z. This puts any commands you have just issued into affect, and returns you to parent mode.

The Internet is one of the 20th century's greatest communications developments. It allows people around the world to send e-mail to one another in a matter of seconds, and it lets you read, among other things, the articles on HowStuffWorks.com. We're all used to seeing the various parts of the Internet that come into our homes and offices -- the Web pages, e-mail messages and downloaded files that make the Internet a dynamic and valuable medium. But none of these parts would ever make it to your computer without a piece of the Internet that you've probably never seen.

Routers are specialized computers that send your messages and those of every other Internet user speeding to their destinations along thousands of pathways. In this article, we'll look at how these behind-the-scenes machines make the Internet work.