Computer networks notes slideshare


A LAN is used to connect the computers and other network devices so that the devices can communicate with each other to share the resources. bal of Nepa Here is the complete Computer Networking notes for Engineering Student. Knowledge is your reward. 1 Principles of Network Applications 1. 1. Network layer Climbing up one level above data link layer is the network (or internet) layer. Sender. Each essential networking concept is explained individually in separate networking tutorial. In computer networks, computing devices exchange data with each other using connections between nodes. These links connecting the devices are called Communication channels. c. On a client/server network, one computer act as a serverClient/Server that provides services and the other computers (client) on the network request services from the server. Useful for the first course on computer networks for undergraduates. (iii) Optical Fibre Cable – It uses the concept of reflection of light through a core made up of glass or plastic. In controlled access, the stations seek information from one another to find which station has the right to send. Cloud Computing is a general term used to describe a new class of network based computing that takes place over the Internet,. convenience of a Windows Phone application. Sliding Window on Receiver Side. • A bus topology consists of a main run of cable with a terminator at each end. It is used for transmission of large volumes of data. Sliding Window Protocol: In sliding window method, multiple frames are sent by sender at a time before needing an acknowledgment. 2. Every device is connected to a single cable; Advantages of Bus Topology. This note is prepared by Daya Ram Budhathoki and Rohit G. Types of computer networks. 11. ) The transmission media is nothing but the physical media over which communication takes place in computer networks. You can probably build a home or small business computer network without understanding the difference between a bus design and a star design, but becoming familiar with the standard topologies gives you a better understanding of important networking concepts like hubs, broadcasts, and routes. . Basic problem – many network applications and protocols have security problems that Here is what a computer with a default Windows XP install looks like:. 3 Transport Services Available to Applications 1. net. Lecture Notes. N = Sender’s Window Size. This tutorial could be your first step toward the challenging world of networking. 0 Comments; 3 Likes; Statistics; Notes Definition – LAN "local area network" Is a group of computers  Nov 30, 2014 The device needs Advantages: • Packet switching is cost effective, because switching devices do not need massive . USB Cables. Systems on broadcast network are said to be on same link. COMPUTER NETWORKING Presented By: Akshay Dhola Enrolment No. Tech Students. Computer Network A network is a set of devices (often referred to as nodes) connected by communication links. • All the nodes (file server, workstations, and peripherals)on a bus topology are connected by one single cable. Web ApplicationsWeb Applications - developed with inadequate security controlsdeveloped with inadequate security controls 3rd Semester Notes of Computer Science and Engineering notes 17MAT31 – Engineering Mathematics (3rd Sem VTU notes download) 17CS32 – Analog and Digital Electronics Question and Answers Module 1 , Module 2 , Module 3 , Module 4 & 5 Analysis of TCP Performance over Mobile Ad Hoc Networks, G. Networking tutorials are organized based on fundamental networking terms. It is done to enable the computers to communicate and share available resources. So, what are you waiting for. pdf Revision: December 2, 2002 Fermat’s Little Theorem transactions that access data or terminals at several nodes of a computer network, Systems of 10,000 terminals or 100,000,000,000 bytes of on-line data or 150 transactions per second are generally considered to be the limit of present technology (software and hardware). Message. Please upload missing slides/ppts of Data Communications and Networking B. The computers on a network may be linked through cables, telephone lines, radio waves, satellites or infrared light beams. Sliding window refers to an imaginary boxes that hold the frames on both sender and receiver side. The following figure shows a situation with five stations and a five slot reservation frame Basic principles (like instruction set design), pipelining and its consequences; VLIW (very long instruction word) architectures, Superpipelined, Superscalar, SIMD (single instruction, multiple data, used in vector and sub-wordparallel processors) and MIMD (multiple instruction, multiple data) architectures; SMT (Simultaneous Multi-Threading); Out-of-order and speculative execution; Branch prediction; Data (value) prediction; Design of advanced memory hierarchies; Memory coherency and Network : system for connecting computer using a single transmission technology Internet : set of networks connected by routers that are configured to pass traffic among any computers attached to networks in the set. Network administrators spend quality of time with security policies. • Packet transmission - data exchange over a network. Magnetic Media One of the most convenient way to transfer data from one computer to another, even before the birth of networking, was to save it on some storage media and transfer physical from one station to another. net/TessFerrandez/notes-from-coursera- deep- 21 Lessons Learned · Computer Vision by Andrew Ng — 11 Lessons Learned. Apr 16, 2018 Ncc Education 1st semister L4DC Computer network . There are three transmission times (3T), three propagation times (3ƭ), data transfer depicted by the sloping lines, a setup delay (which includes transmission and propagation in two directions), and a teardown delay (which includes transmission and propagation in one direction). Here you can download the free Computer Networks Notes Pdf Material - CN Notes Pdf of Latest & old materials with multiple file links to download. They describe the physical and logical arrangement of the network nodes. • Network topologies describe the ways in which the elements of a network are mapped. slideshare. Write short notes on circuit switching , packet switching and   I've enjoyed every little bit of the course hope you enjoy my notes too. Students who belongs to VTU University can Download the Notes for B. Application areas of Computer Graphics, overview of graphics systems, video-display devices, raster-scan systems, random scan systems, graphics monitors and work stations and input devices. la mooj gara haddi haseyo hola result 70 aayo assingment ma . The three controlled-access methods are: Reservation. Transport layer does not perform any function in the intermediate nodes. Agra University. Forouzan,"Computer Networks",4th edition, McGraw-Hill PPT slides Computer and Information Technology notes: Behrouz A. Computer Networks: A Systems Approach, Fifth Edition, teaches the key principles of computer networks, using the Internet as a primary example to explain protocols and networking technologies. Carrier Sensed Multiple Access (CSMA) : CSMA is a network access method used on shared network topologies such as Ethernet to control access to the network. This interconnection among computers facilitates information sharing among them. Prepared By : VINAY ALEXANDER. http://www. Bachelor of Technology in. Features of Bus Topology. All stations attached to an Ethernet are connected to a shared signaling system, also called the medium. Subjects. It can be a computer, workstation, telephone handset, video camera, and so on. a school Network. It is primarily used in cable TV networks and as trunk lines between telecommunication equipments. A server is a computer that controls access to the hardware, Computer Network. 1. COMPUTER NETWORKS 1-1 MODULE 1: APPLICATION LAYER 1. Introduction to Computer Networks PPT Distinguish between host and a server computer, P2P network, Notes Slideshare. 3. Application: Sharing of resources such as printers Sharing of expensive software's and database Communication from one computer to another computer Exchange Mess Topology Mesh Network is a network where all the nodes are connected to each other and is a complete network. Computer Networks Lecture2,Types of Casting:Unicast,Limited Broadcast,Directed Broadcast - Duration: 16:17. This is split into two units, the first about IP, and the second about routing; it is only split to allow more time to cover it. SECURITY LECTURE NOTES for. edu/˜rivest/notes/flt. To overcome this Voice over LTE, was introduced as the global scheme to provide seamless integration of voice and short messaging into LTE networks. Computer Network: It is the interconnection of multiple devices, generally termed as Hosts connected using multiple paths for the purpose of sending/receiving data or media. These data links are established over cable media such as wires or optic cables, or wireless media such as Wi-Fi. H. Computer Networks Tutorial. This sharing can be local or remote. Cloud Computing - growing use will make this a prime target for attack. Improving Deep Neural Networks: Hyperparameter tuning, Regularization and Optimization. throughput, delay, . Internet Standards  A path vector protocol is a network routing protocol which maintains the path information that This computer networking article is a stub. Popular forms of information include text, numbers, pictures, audio, and video. Rated 3. >= (Sender’s Window Size) + (Reciever’s Window Size ) Here you can download the free Computer Networks Notes Pdf Material - CN Notes Pdf of Latest & old materials with multiple file links to download. Signals are normally broadcast through free space and thus are available to anyone who has a device capable of receiving them. . The receiver is the device that receives the message. In computer network engineering, an Internet Standard is a normative specification of a technology or methodology applicable to the Internet. lcs. Oct 12, 2015 1 Comment; 37 Likes; Statistics; Notes . CRYPTOGRAPHY AND NETWORK SECURITY LECTURE NOTES for Bachelor of Technology in Computer Science and Engineering & Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, Burla) Burla, Sambalpur, Odisha Lecture Notes on Computer Networks - PowerPoint PPT Presentation. mit. UNIT I: Layered Network Architecture-Review of ISO-OSI Model (Application layer,Presentation layer,Session layer) Metropolitan Area Network (MAN) •A metropolitan area network (MAN) is a large computer network that usually spans a city or a large campus. TOPIC-COMPUTER NETWORKS GROUP - 5 SUBMITTED TO: Dr. com Provides VTU CSE Lecture Notes Subject Notes Unit Wise Notes with Subject codes for the Computer Science Students. Vasanthi Muniasamy. by Dinesh Thakur Category: Computer Network. williamson, a. Data Communication and Computer Network 1 A system of interconnected computers and computerized peripherals such as printers is called computer network. A computer which is available for the network resources and provides service to the other computer on request is known as server. Software modules in one system are used to communicate with one or more software modules HANDWRITTEN NOTES of computer Network. What is a Computer Network? Two or more computers or communications  At one point, web-based multimedia was strictly limited as both computers and internet . Computer network <ul><li>A computer network is a system of interconnected computers Computer network communication <ul><li>We transmit information or data by using two  Mar 25, 2017 Types Of Computer Networks xplain different types of computer networks:(LAN, WAN, 2)WAN Network Reliability Single computer failure will not disturb whole network, since all other 0 Comments; 1 Like; Statistics; Notes. Software modules in one system are used to communicate with one or more software modules Now you can upload your notes at EazyNotes. Background: ❒ # wireless (mobile) phone subscribers now exceeds # wired phone subscribers! ❒ computer nets:  Remember to review the Notes, Tips, Tables, and Exam Alerts in this chapter. • The sliding window of the receiver shrinks from left when frames of data are received. It supports medium to High Data Rates It has much better immunity to noise and hence signal strength is retained for longer distances than in copper twisted pair media. basically a step on from Utility  Chapter 6: Wireless and Mobile Networks. Use diagrams where possible to provide the detailed explanations CRYPTOGRAPHY AND NETWORK SECURITY LECTURE NOTES for Bachelor of Technology in Computer Science and Engineering & Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, Burla) Burla, Sambalpur, Odisha Lecture Notes. kurose, k. What is Hacking? Hacking is identifying weakness in computer systems or networks to exploit its weaknesses to gain access. A Comparison of TCP Performance over Three Routing Protocols for Mobile Ad Hoc Networks , Thomas Dyer, Rajendra Boppana, Mobihoc 2001. Computer network is a telecommunication channel using which we can share data with other coomputers or devices, connected to the same network. ing all of the previously mentioned networks to inter-operate with or evolve into 3G wireless networks (www. A single cable, the backbone functions as a shared communication medium that devices attach or tap into with an interface connector. only authorized traffic is allowed. Protocol Definition: It is a digital language through which we communicate with others on the Internet. Freely browse and use OCW materials at your own pace. UNIT -I Introduction to Computer Networks. Submit your notes and share them with the world. USB cables feature twisted pair wiring. Server gets the stored file. each network costs one hop) Service type-dependent (the cost of the network depends on what service the packet needs: e. 1 Reliable Data Transfer 1. Data Communication and Computer Networks. It is responsible for message delivery from process running in source computer to the process running in the destination computer. View and go through important lecture and classroom notes of your specialization Network Layer: Delivery, Forwarding, and Routing Transport Layer: 23 Process-to-Process Delivery: UDP, TCP, and SCTP 24 Congestion Control and Quality of Service Application Layer: 25 Domain Name System 26 Remote Logging, Electronic Mail, and File Transfer 27 WWW and HTTP 28 Network Management: SNMP 29 Multimedia Security: 30 Cryptography 31 Social network attacksSocial network attacks Users’ trust in online friends makes these networks a prime target. Download files for later. The sliding window of the sender expands to right when acknowledgments are received. No enrollment or registration. Class Full Addressing Table. rose, b. Coaxial Cable Coaxial is called by this name because it contains two conductors that are parallel to each other. Networks are known as a medium of connections between nodes (set of devices) or computers. 5 out of 5 stars. The topics are: Thanks for the slides. Few businesses, government agencies, schools, or other organizations operate today without extensive use of computer technology and digital networks. A computer network is basically built from two components; hardware and software. g. within a computer network which allows non-linear editing in any part of the video. 857 Computer and Network Security Class Notes 5 File: http://theory. (in SR both sender and receiver window are same) a = Tp/Tt. The transport layer is the fourth layer from the bottom in the OSI reference model. 0 Comments; 20 Likes; Statistics; Notes There are two aspects of computer networks – hardware and  Sep 7, 2007 7 Comments; 64 Likes; Statistics; Notes . DEFINTION & APPLICATIONS  DEFINTION: A computer network is defined as the interconnection of two or more computers. Bus networks (not to be confused with the system bus of a computer) use a common backbone to connect all devices. Signals are transmitted in the form of electromagnetic energy from one device to another. The sliding window of the receiver expands to the right when acknowledgement is sent. The book encourages readers to think, through a number of perspectives, about how a network can fit into a larger, complex system of interaction. Most Universal Serial Bus (USB) cables connect a computer with a peripheral device (keyboard or mouse) rather than to another computer. Just click upload and submit your notes. The following components widely used for the construction of networks. Forouzan,"Computer Networks",4th edition, McGraw-Hill PPT slides Computer and Information Technology notes Computer devices have processors, memory, and a means of interfacing with a particular type of network. Flow Control. 3 Addressing Processes 1. Data Communication and Computer Networks Page 3 1.  APPLICATIONS: i. Disclaimer: This application is not affiliated with Slideshare. Transmission Mediums in Computer Networks. e. There are also multiple devices or mediums which helps in the communication between two different devices which are known as Network devices . Last Minute Notes – Computer Networks. 1 Client Server Architecture 1. It transmits data only in one direction. Emerging Mobile and Wireless Networks Mobile and wireless networks are also experiencing significant progress in the form of wireless local area networks (WLANs) [4], satellite-based networks design new vehicles, CAM (computer-aided manufacturing) software to as-semble these designs, and digital networks to purchase component parts and to distribute vehicles to customers. the lecture slides are copied and/or revised from the slides from drs. Example of Hacking: Using password cracking algorithm to gain access to a system Computers have become mandatory to run a successful businesses. 1 Data Communication:When we communicate, we are sharing information. In a Mesh Network every node is connected to other nodes on the network through hops. 2 P2P Architecture 1. It serves as an internet access line from the home. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. phone, fax and computers and are less and less linked by a common history and shared   The process of converting analog signals of one computer network into digital signals of another . 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 This Blog contains a huge collection of various lectures notes, slides, ebooks in ppt, pdf and html format in all subjects. Oct 5, 2012 hey guys!!! this is one of my school projects on computer network!!! hope you all like it!! Jul 17, 2013 Computer Networks Introduction to computer networks. Extremely helpful. &. A communication system may include number of switches and nodes. 1 Process 1. Fiber Optic Cables Computer Networking: A Top-Down Approach. bal of Nepali Engineering College. COMPUTER NETWORKS Computer network consists of two or more computers that are linked in order to share resources, exchange data files or to allow electronic communication. f. Traditional cell phones don't fall within the definition of a computer device; however, newer phones and even audio headsets are beginning to incorporate computing power and network adapters. Make sure . When it has exactly two endpoints, then it is called Linear Bus topology. You can share files with other computers this way easily. † the network is densely connected † we have moderate to heavy traffic loads Under these assumptions, if link (i;j) has a total rate ‚ij, then (from M/M/1): Nij = ‚ij „ij ¡‚ij The average delay per packet in the entire system (Little’s theorem) is (ig-noring propagation delay) T = P i;j Nij ° where ° is the total arrival rate in the system. 2 Processes Communicating 1. Sharing of resources such as printers ii. tanebaum, j. -Each of the devices on the network can be thought of as a node; each node has a unique address. Computer Graphics Notes Pdf – CG Notes Pdf. The below figure shows the part of the electromagnetic spectrum, ranging from 3 kHz to 900 THz, used for wireless communication. Between individuals, local communication usually occurs face to face, while remote communication takes place over distance. After presenting some fundamentals that are general to all or most of these areas, we will focus on simulations of computer networks and systems. you can collect notes from the photocopy shop for detailed explanation. This layer conveys a packet across different networks to any addressable destination. A node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other nodes on the network. •A MAN is optimized for a larger geographical area than a LAN, ranging from several blocks of buildings to entire cities. DCN - Network Switching. View and go through important lecture and classroom notes of your specialization In general, a computer network composed of one or more servers, workstations, network interface cards, active and passive hub, routers, bridges, gateways, modem, software components like network operating systems, and other application software. Bhatt. The physical connection between networked  Feb 22, 2016 presentation on computer network. Jan 10, 2013 Introduction to Computer Networks Chapter 1Chapter 1 1. 3) is that it is 'a society whose social structure is made up of networks . Vaidya, Fifth Annual International Conference on Mobile Computing and Networking (MOBICOM), Seattle, August 1999. Evolution of Networking. Computers may connect to each other by either wired or wireless media. 3. We don't offer credit or certification for using OCW. etc. Notes on Computer Networks v 3. The presentation will start after a short (15 second) video ad from one of our sponsors. You can help  A choke point of control and monitoring; Interconnects networks with differing trust; Imposes restrictions on network services. Regardless how much experiences you have or have no experience at all, you can easily understand all essential networking concepts by going through these networking tutorials. Gate Lectures by Ravindrababu Ravula 431,552 views Behrouz A. Computer Graphics pdf Notes starts with the topics covering Introduction of Computer graphics. 1 Network Application Architectures 1. Following, take notes to see if there is anything that needs to be added. See Last Minute Notes on all subjects here. The web pages are stored at the server. itu. Network Security Threat and Solutions. When data comes on a port it is called ingress, and when data leaves a port or goes out it is called egress. CRYPTOGRAPHY AND NETWORK. Types of Transmission Media. It allows only one node to send at a time, to avoid collision of messages on shared medium. Introduction to Computer Network: 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. The Data Communication and Computer Networks Notes Pdf – DCCN Pdf Notes book starts with the topics covering Communications, Multiplexing and Spreading, Block Coding, Backbone Networks, Logical Addressing, Process- to-Proccss Delivery, Network Management System, etc. Data link layer is responsible for converting data stream to signals bit by bit and to send that over the underlying hardware. COMPUTER COMMUNICATION NETWORKS: USE OF MODERN INFORMATION TECHNOLOGIES FOR INFORMATION RETRIEVAL & DISSEMINATION. 0 Comments; 7 Likes; Statistics; Notes Local Area Networks <ul><li>A LAN is a network of computers connected over  Sep 18, 2014 A simple networking concept. -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. lecture notes. Director Network Operations and Services, NSU 10-17-2013 Todays’ Discussion ! Overview of Computer and Internet Security ! What is Computer and Internet Security ! Who Should be Concerned ! Why Should I Care ! General Computer Security Tips ! Securing Mobile Devices and Social Networks ! Mobile Devices – Risks ! Looking for free CCNA Study Guide or CCNA Tutorials or do not have money to get expensive CCNA online training, you are at right place. Devices attached to the network cable listen (carrier sense) before transmitting. • Data transmission - media, data encoding. 2 Throughput BASIC CONCEPTS OF COMPUTER NETWORKS. Reply Delete Local Area Network, such as 10Base-T and 100Base-T, also use twisted-pair cables. It gets the name of the file required. There's no signup, and no start or end dates. Server accepts a TCP connection from a client browser. This site took quite a bit of time and effort to create, and it costs me money to keep it up and running. Computer Network Tutorials - GeeksforGeeks Here is the complete Computer Networking notes for Engineering Student. K. With this edition, Kurose and Ross have revised and modernized treatment of some key chapters to integrate the most current and relevant networking technologies. If the site has helped you, please consider showing your appreciation by donating a little towards the site's running costs. 2 Interface between the Process and the Computer Network Socket 1. Jagdish Arora, Sharan Pal Kaur, Harish Chandra & R. The connections is established by using either cable media or wireless media. Each of the devices on the network can be thought of as a node; each node has a unique address. DEEPAK JAROLIYA SUBMITTED BY  Oct 20, 2013 COMPUTER NETWORKING Mrs. If the channel is in use, devices wait before transmitting. Information  Dec 6, 2002 Identify the purpose, features, and functions of the following network components: Hubs Review the notes, tips, and exam tips in this chapter. w. protocol meaning is that it a set of mutually accepted and implemented rules at both ends of the communications channel for the proper exchange of information. It is active only in the end systems. 2. After reviewing, they will be published under your name. On parts of the network that accommodate client computers, unman-. org). Computer Networks Lecture Notes. MIT 6. Computer Science and Engineering. Sequence No. Definition: A computer network is defined as the interconnection of two or more computers. May 13, 2015 BASIC CONCEPTS OF COMPUTER NETWORKS CHAPTER 3: COMPUTER NETWORKS AND CO/ vNUi'| CAT| OI! S. A computer network is a digital telecommunications network which allows nodes to share resources. shoja. sun, and a. May 7, 2009 Networks Mr Arthur. The message is the information (data) to be communicated. Use OCW to guide your own life-long learning, or to teach others. This type of communication is often referred to as wireless communication. Rejinpaul. This CCNA Study Guide explains each CCNA topic in detail with examples in separate CCNA Tutorial. More Sticky Notes 8. Both components have their own vulnerabilities and risks. Flooding is a simple routing technique in computer networks where a source Because flooding uses every path in the network, the shortest path is also used. KV JHAGRAKHAND. As part of your Network notes on OneNote, Provide the differences between SAN (storage area network) and RAID (redundant array of inexpensive disks). 1 Client & Server Processes 1. A network is consist of group of computer systems, servers, networking devices are linked together to share resources, including a printer or a file server. In this tutorial you will learn about types of Computer Networks, OSI Model, different layers of the OSI Model, various transmission medium etc. Classification of Computer Networks Computer Network Notes For B. If the network is large enough and lets you access a large number of computers, it becomes even more useful. Learn complex networking concepts and topics in easy language with step by step practical examples. https://www. 1 Data Center 1. Electromagnetic signals travel through vacuum, air or other transmission mediums to move from one point to another (from sender to receiver). Holland and N. net/azmankadir/multimedia-element- presentation  Aug 4, 2012 Dte Dce Interface-Data Communication-Lecture Notes, Study notes for Data Communication Systems and Computer Networks. Computer Network | Controlled Access Protocols. INTRODUCTION TO IT; Slides; MS-OFFICE; MS-Word; MS-PowerPoint; PROGRAMMING IN C; C Programs; Notes; C++; C++ Programs; Notes; JAVA; Java Programs; Slides This website provides a comprehensive collection of computer networking tutorials, notes and study guides for anyone who is preparing for networking certificate or working in computer networking field. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum. Introduction 2. This is an area that brings many challenging research problems due to the complexity, size, and heterogeneity of typical networks. Made for sharing. The work of data link layer tends to get more complex when it is dealing with multiple hosts on single collision domain. It is also called Data Network. 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 Best place for Study Materials, Lectures and Notes of computer networking courses, shared by various colleges and students for all. 0 Comments; 11 Likes; Statistics; Notes Local area networks (LANs) are computer networks ranging in size from a few computers in a single office to hundreds or  Mar 7, 2015 about the basic computer networks. Electromagnetic energy (includes electrical and magnetic fields) Each Ethernet-equipped computer operates independently of all other stations on the network: there is no central controller. Networking Advantages of Computer Network Disadvantages of Computer Network Classification of  Apr 18, 2016 COMPUTER NETWORKS Lecture Notes Course Code - BCS-308 Course Name - INTERNET & WEB INTERNET & WEB TECHNOLOGY – I  Apr 12, 2016 A computer network is a telecommunications network that allows computers to exchange data. However, special network adapters (sometimes called dongles) also allow connecting an Ethernet cable to a USB port indirectly. Introduction To Computer Networks. Indian Institute of Technology New Delhi, 110 016 India Packets may pass through several networks on their way to destination Each network carries a price tag, or a “metric” The metric of a network may be: constant (i. E Computer Science Engineering in PDF Format. Computer Network training Bus topology is a network type in which every computer and network device is connected to single cable. What is a Computer Network? So, what is a computer network exactly? A computer network is a group of computers, two or more, connected to each other through a wire or a cable or even wireless. A Local Area Network is a privately owned computer network covering a small Networks geographical area, like a home, office, or groups of buildings e. Forouzan Ppt Slides. The sender is the device that sends the data message. Computer devices have processors, memory, and a means of interfacing with a particular type of network. At broad level, switching can be divided into two major categories: UnBounded or UnGuided Transmission Media. Introduction to computer network. Receiver. Search this site. The best example of computer network is Internet. pdf Revision: December 2, 2002 Fermat’s Little Theorem DCN - Data-link Layer Introduction. Networking today involves much more than standards specifying message formats and protocol behaviors and it is far more interesting. The core is surrounded by a less dense glass or plastic covering called the cladding. Computer network unit 1  Mar 29, 2016 Data link layer: flow control, error control, line discipline, stop and wait, sliding window protocol, stop and wait arq, sliding window arq, BSC,  Mar 25, 2007 Introductory overview of OSI protocol stack and basic protocols. It is cost effective. computer networks notes slideshare

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