Networking

Introduction to Networking explains computer networking basics in terms that you can easily understand, using concepts common to everyday, non-computing experience. A brief introduction to networking history provides context, explaining how networks have become so important to businesses and individuals. The course emphasizes networking fundamentals, explaining the software and hardware that makes networking possible. The course stresses understanding how and why networks work, rather than focusing on memorization of terms or numbers.

Networking is the method by which two or more computing devices can be linked together for the purpose of sharing data. Networks are developed by mixing computer hardware and computer software. Networking can help you to reorganize the office, share music files and printers. The Networking course will provide you tips and give a comprehensive understanding of the tools and techniques which will get you started with setting up a network. There are two kinds of network available; wired networks which use Ethernet (CAT-5) cables to connect to networked components and wireless networks which use Wi-Fi which is a wireless communication standard.

Have you ever wondered how networks started?

You're surrounded by networks, whether they're computer networks, networks of roads, or the network of telephones that allow you to communicate every day. In this first lesson, you'll learn how networks have evolved over the last hundred years. You'll also find out why every additional device that connects to a network greatly increases the value of the network. By the time you've completed this lesson, you'll have a framework of knowledge that will take you through the rest of the course.

 Starting lesson, you'll jump right into networks and networking, and learn how they work. You'll use examples from your everyday experience. You'll learn how to tell the difference between a network and networking, and realize that computer networks are a lot like freeway networks. You'll never look at an interstate the same way again! You'll also find out why shipping your data from one computer to the next is a lot like sending your distant uncle a new coffee mug for his birthday. Believe it or not, freeways and shipped gifts have a direct correlation to how networks and networking operate. 

Have you ever heard someone refer to a computer as a server? Maybe you've heard someone talk about connecting computers in a peer-to-peer environment. Understanding the difference between client/server and peer-to-peer networks really helps you learn about computers and networking. So in this lesson, you'll learn how to tell the difference between client/server and peer-to-peer networks, and when to use one instead of the other.

Many people have heard of Ethernet, but what does that mean exactly? In this lesson, you'll learn all about Ethernet, and a whole lot more. Here you'll find out the difference between a star topology and a bus topology, and the advantages of each. Is Ethernet or Token Ring the best modern network technology, and why? In this lesson, you'll get those answers and many more.

This lesson will explore how routers operate, and you'll see why routers operate a lot like how a receptionist in a growing company handles telephone calls. This lesson will build on information you learned in previous lessons, then you'll find out how a single interconnected network (the Internet) can actually span the entire globe. A global network is an amazing feat, accomplished by interconnecting network segments and routing data! When you've completed this lesson, you'll understand how routing helps data to cross the city, state, or an entire ocean.

When people communicate, they speak a language—such as English—to exchange information. Computers communicate similarly over a network, but instead of speaking a language, they use something called a protocol. Protocols are similar to languages, and in this lesson, you'll learn about the protocols used in networking. You'll also learn which protocol has emerged as the dominant computer protocol, and why.

In this lesson, you'll learn how the networking protocol TCP/IP operates. TCP/IP is a collection of protocols, and in this lesson you'll learn how TCP/IP divides its tasks. This lesson will go over how TCP/IP uses addresses to direct data to its rightful owner—it's similar to how people use street addresses.

Have you ever wondered how your computer converts a World Wide Web address into a Web site that appears on your screen? In this lesson, you'll learn how the Domain Name System (DNS) translates names into numeric addresses, and how all that allows your favorite Web site, e-mail, or file to appear on your computer screen. You'll also learn how the entire computer industry comes to a consensus about how the Internet should work.

This lesson will take a look at Wide Area Networks (WANs) and how they compare to Local Area Networks (LANs). You'll learn all about how data gets sent over long distances, and how the Internet changed expensive, long-distance network connections. You'll also learn how Point-to-Point Tunneling Protocol (PPTP) secures those Internet connections from prying eyes.

If you connect to the Internet, you use remote access. This lesson will explore the traditional means of connecting to remote LANs, and talk about exactly how dial-up Internet access works. Then this lesson will discuss modern means by which many people connect to the Internet, including DSL and cable modems.

In this lesson, you'll apply many of the concepts you've learned so far in this course. This lesson will walk through the process of making an Internet connection, and you'll see the step-by-step process of creating a dial-up connection. Each step of the way, you'll come to understand what's going on behind the scenes. From there, this lesson will jump to connecting to the Internet using broadband connections, such as DSL or cable modems.

This final lesson will tie all the previous lessons together, clarifying how new information about networks and networking can be quickly understood. You'll learn three categories into which networking knowledge can be placed, and see examples to apply your newfound network categories. By the end of this lesson, your understanding of networking will be solid as a rock, and you'll be well-prepared for a lifetime of continued learning about networking!!

Network Card for Computer Network

Normally to some it up, a networking card is a piece of computer hardware that is designed to allow computers to communicate over a network.

Now we will designed to be the main page for the computer networking section. Hopefully it will be able to provide you with some useful information as to what a network card is and how ti can be used.

Types of Network Card

There are so many different types of network cards. There are wireless network card, USB network Adapter, typical network card and more.Now giving you information about LAN card and WAN card.

Local Area Network (LAN)

LAN Card

A LAN acts as privately owned networks for a few kilometers in size. LANs are limited to a single building or group pf buildings, by using telephone line and radio waves, one LAN can be attached to other LANs over any distance. A system of multiple connections of LAN is called a wide area network (WAN).

 LANs are linted in size which means that the worst case transmission time is restricted and known in advance. Knowing this limitation makes it possible. it also simplifies network management. LAN often make use of a transmission technology. LANs operates at speeds of 10 to 100Mbps with low delay and make very few errors. LANs are working at speed of up to 100 Megabits/sec.

Wide Area Network (WAN)

Wide area network technology has three major components. The main components is the data line that connects the network to the internet superhighway. This may vary in the data-transfer speed it offers. then come the routers they are the routing mechanism and the software component or protocol mechanism.

Router are the most important components in this technology. They are also called :Level 3 Switch" Router coupled with the data sharing protocols from a huge data delivery system.

WAN Card

All data that is transmitted on the internet is always labeled with the destination address which is a numerical name assigned to every computer connected on the network. They are called 'Internet Protocol (IP) address'. Routers decide bandwidth allocation for every type of data that is transmitted. 

Routers are placed at nodes of a network connection many subnets togther. A subner is a network of computer with an identical initial part in the IP address. You could say that all those computers in a subnet are on a common suburb in the netword distribution.The router handle varying kinds of data like server-client requests and data packets with the help of TCP/IP Protocol in case of the internet. The protocols types may vary in the sense of what set of points are  being connected at a time and what rules are followed. So one could classify types of WANs based on the type of main connection line or the kind of protocol implemented.