Computer network basics pdf

A computer network consists of a collection of computers, printers and other. This interconnection among computers facilitates information sharing among them. Chapter one introduction to computer computer a computer is an electronic device, operating under the control of instructions stored in its own memory that can accept data input, process the data. In this lesson you will learn several networking concepts. Introducing basic network concepts 3 basetech networking concepts team 2230894 blind folio 3 figure 1. We will start with some basic concepts, intended not for the veteran network. Networking tutorial in pdf computer tutorials in pdf. You should know the basics of input and output devices, primary and secondary. It covers the lan, internetworking and transport layers, focusing primarily on tcpip. Create files and store them in one computer, access those files from the other computer s connected over the network. We cover network types, wired, wifi, protocols, and alternate networking solutions to deliver a complete picture. Ip is a standard that defines the manner in which the network layers of two hosts interact.

Lans and wans can be interconnected via t1 or t3 digital leased linesaccording to the protocols involved, networks interconnection is achieved using one or several of the following devices. Data communication and computer network 1 a system of interconnected computers and computerized peripherals such as printers is called computer network. The five courses included in this specialization are designed for beginners in computing that want to understand the basics of how data is sent and received in a network and how small computer networks. A computer network is defined as the interconnection of two or more computers. However, this book will focus on computer networksconnecting computers and having them communicate with each other. A network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data. Our objective is for you to understand what these concepts are and what their role in network. The standards ensure that once your network has been added, your wireless clients have the capacity to communicate with other networks worldwide. The telephone network is a typical circuitswitched network communication requires a connection setup phase in which the network reserves all the necessary resources for that connection links, bu. Fig 1 gives an example of a network in a school comprising of a local area network. The purpose of having computer network is to send and receive data stored in other devices over the network. The picture of grace hopper in chapter 3 is from the computer.

Basic of networking 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. Learn about the glue that holds our networks together in this lan primer. Computer networking has existed for many years, and as time has passed the technologies have become faster and less expensive. Difference between unicast, broadcast and multicast in computer network. Now that you know the basics of opening and closing an smtp. Computer networks pdf notes free download cn notes. A computer network is a group of computer systems and other computing hardware devices that are linked together through communication channels to facilitate communication and. Robertazzi stony brook university september 19, 2011. Our computer networking tutorial is designed for beginners and professionals. Download free networking courses and tutorials training in pdf lan, wan, router, switcher,the internet, intranet, would you like to learn how computer networks work. Welcome to the cisco networking basics specialization. It is done to enable the computers to communicate and share available resources. Switches, routers, and wireless access points are the essential networking basics.

It is the data or information which needs to be transferred from one device to another device over a computer network. All of the above 12 what is a firewall in computer network. It is also known as network model or network design. Network architecture network architecture is the overall design of a computer network that describes how a computer network is configured and what strategies are being used. Principles, protocols and practice, release techniques allow to create pointtopoint links while radiobased techniques, depending on the directionality of the antennas, can be used to build networks. It is mainly focuses on the function of the networks. Networks are made up of various devicescomputers, switches, routersconnected together by cables or wireless signals. A computer network is a system in which multiple computers are connected to each other to share information and resources characteristics of a computer network. Basic concepts in computer networking usi informatics. Before proceeding with this tutorial, you need a basic understanding of computer. Transmission modes in computer networks simplex, halfduplex and fullduplex types of transmission media.

The layer 3 switch functions at the network layer and performs the multiport, virtual lan, data pipelining functions of a standard layer 2 switch. An introduction to computer networksis a free and open generalpurpose computer networking textbook, complete with diagrams and exercises. 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. Our computer network tutorial includes all topics of computer network such as introduction, features, types of computer network. Computer networks pdf notes starts with the topics covering introduction to networks. Fundamentals of computer networking and internetworking. Understanding the basics of how networks are put together is an important step in building a. You can also take our introductory course on computer networking to learn more about the basics.

An introduction to computer networks open textbook library. Computers may connect to each other by either wired or wireless media. These tutorials are part of the overall set of online materials, and cover the basics of networking. Building wireless community networks internet society. Through them, devices connected to your network can communicate with one another and with other networks. The second reason is that the computer networking community is a strong.

Data communication and computer network tutorialspoint. The more people in your network, the better your chances of finding that perfect job. For the remainder of this text, the term networkwill. A node can be a computer, printer, or any other device capable of sending andor receiving data generated by other nodes on the network. Computer basics seema sirpal delhi university computer centre. In peer to peer network each computer can function as both client and server. A network refers to two or more connected computers that can share resources such as data, a printer, an internet connection, applications. Take advantage of this course called basic computer course book download to improve your others skills and better understand computer basic this course is adapted to your level as well as all computer basic pdf courses to better enrich your knowledge all you need to do is download the training document, open it and start learning computer basic. After a successful setup, the communicating systems are connected by a set of links that are dedicated to their. Principles, protocols and practice, release techniques allow to create pointtopoint links while radiobased techniques, depending on the directionality of the antennas, can be used to build networks containing devices spread over a small geographical area. It can also perform basic routing functions between. Protocol layering d needed because communication is complex d intended primarily for protocol designers. Ip addresses are 32 bit long, hierarchical addressing scheme. Multiple choice questions of computer networking 11 computer network is a.