6/28/2019 0 Comments Computer Networks NotesAnna 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. CS6551 CN NotesData Communication and Computer Network 1 A system of interconnected computers and computerized peripherals such as printers is called computer network. This interconnection among computers facilitates information sharing among them. Computers may connect to each other by either wired or wireless media. Classification of Computer Networks. Computer networks pdf notes starts with the topics covering Introduction to networks, internet, protocols & standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog & digital signals, etc. CS6551 CN Notes – COMPUTER NETWORKS UNIT I FUNDAMENTALS & LINK LAYER 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 Open system: Closed system: Computer Network: The layout pattern using which devices are interconnected is called as network topology. Such as Bus, Star, Mesh, Ring, Daisy chain. OSI: Protocol: ![]() UNIQUE IDENTIFIERS OF NETWORK IP Address (Internet Protocol address): MAC Address (Media Access Control address): Port:
Number of ports: 65,536 Socket: Few more concepts ARP: This article is contributed by Kundana Thiyari. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to [email protected]. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. Recommended Posts:Improved By : HimeshKaminipaty, ayushgangwar, aryavijay
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