CS6551 CN Notes, COMPUTER NETWORKS Lecture Notes – CSE 4th SEM Anna University


CS6551  CN Notes

Anna University Regulation 2013 Computer Science Engineering (CSE) CS6551  CN Notes for all 5 units are provided below. Download link for CSE 4th SEM CS6551  COMPUTER NETWORKS Lecture Notes are listed down for students to make perfect utilization and score maximum marks with our study materials.




Building a network:

A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices pass data to each other along network links (data connections). Data is transferred in the form of packets. The connections between nodes are established using either cable media or wireless media. The bestknown computer network is the Internet.

To build a computer network is defining what a network is and understanding how it is used to help a business meet its objectives. A network is a connected collection of devices and end systems, such as computers and servers, which can communicate with each other.

These are the four major categories of physical components in a computer network:

Personal computers (PCs): The PCs serve as endpoints in the network, sending and receiving data.

Interconnections: The interconnections consist of components that provide a means for data to travel from one point to another point in the network. This category includes components such as the following: o Network interface cards (NICs) that translate the data produced by the computer into a format that can be transmitted over the local network o Network media, such as cables or wireless media, that provide the means by which the signals are transmitted from one networked device to another o Connectors that provide the connection points for the media

Switches: Switches are devices that provide network attachment to the end systems and intelligent switching of the data within the local network.

Routers: Routers interconnect networks and choose the best paths between networks.

Network User Applications:

The key to utilizing multiple resources on a data network is having applications that are aware of these communication mechanisms. Although many applications are available for users in a network environment, some applications are common to nearly all users.

The most common network user applications include the following:

E-mail: E-mail is a valuable application for most network users. Users can communicate information (messages and files) electronically in a timely manner, to not only other users in the same network but also other users outside the network (suppliers, information resources, and customers, for example). Examples of e-mail programs include Microsoft Outlook and Eudora by Qualcomm.

CS6551  CN Unit -1   notes – Download Here
CS6551  CN Unit -2   notes – Download Here
CS6551  CN Unit -3   notes – Download Here
CS6551  CN Unit -4   notes – Download Here
CS6551  CN Unit -5   notes – Download Here
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