Computer networks lecture series on computer networks by prof. The network connectivity or the accessibility were much improved in accuracy and speed. Ethernet we learned that a local area network lan is a computer network that is designed for a limited geographic area such as a building or a campus. Introduction to wireless communications and networks. Computer networks nptel online videos, courses iit. A node can be a computer, printer, or any other device capable of sending andor receiving data. Ethernet ethernet is a widely deployed lan technology. This technology was invented by bob metcalfe and d. For the delivery of data or information with the ease of accuracy various types of switching techniques are employed in the data. Many lan technologies that use ring topology use token passing for synchronized access to the ring. This is an opencourseware and is shared by edurev under creative commons license. The objective is to select values that optimize the models performance, such as minimal cost. Bluetooth is a wireless lan technology used to connect devices of different functions such as telephones, computers laptop or desktop, notebooks, cameras, printers and so on.
Lan technologies computer science engineering cse notes. Cellular communication network technologies cellular communication is a form of communication technology that enables the use of mobile phones. The connection among the devices could wired or wireless. Local area network lan is a data communication network connecting various terminals or computers within a building or limited geographical area. Nptel video lecture topic list created by linuxpert systems, chennaiget digimat digital media access terminal for highspeed video streaming of nptel and educational video courses in lan. Many manufacturers started producing devices for this technology. While previously there existed only 2g gsm based communication systems which supported a data rate of around 10 kbps, several radical wireless technologies have been developed in the last 10 years to enable broadband wireless access with rates in excess of 100 mbps. Data communication and computer network 8 let us go through various lan technologies in brief. Find materials for this course in the pages linked along the left. Lan and the distribution system portal q bridge to other wired networks distribution system q interconnection network to form one logical network ees. Ethernet a system for connecting a number of computer systems to form a local area network, with protocols to control the passing of information telephone line a system that utilizes electrical signals in order to transmit data over a distance using a single pair of copper traditionally wires. The existential necessity of life we take a look at the technology behind the technologies like lte, 5g, and wifi and how it is continuing to improve. Lecture 28 turbine blade cooling technologies lecture 29 turbine blade design nptel video lecture topic list created by linuxpert systems, chennaiget digimat digital media access terminal for highspeed video streaming of nptel and educational video courses in lan. Hardware must be designed to pass token even if attached computer is powered down.
The lan technology will assist the devices on the network communicate with each other. The services required of, or by, the llc sublayer at the logical interfaces with the network layer, the medium access control mac sublayer, and. The course provides indepth knowledge of computer networkscn. It describes the functions, features, protocol, and services of the logical link control llc sublayer, which constitutes the top sublayer in the data link layer of the iso 8802 local area network protocol.
Fundamentals of computer networking and internetworking. Wireless lans slides by jochen schiller with modifications by emmanuel agu qcharacteristics qieee 802. Lecture notes information technology essentials sloan. Solved multiple choice questions on computer networking. Get the notes of all important topics of computer networks subject.
Csma cd, as well as many other lan protocol s, uses the co nceptual model of fig. Each vendor typically had its own type of nics, cabling, and data link and network protocols. Nptel video lectures, iit video lectures online, nptel. When traversing the network switches, routers or the other network nodes then the packets are buffered in the queue, resulting in variable delay and throughput depending on the networks capacity and the traffic load on network. Nptel video lecture topic list created by linuxpert systems, chennaiget digimat digital media access terminal for highspeed video streaming of nptel. Types of switching techniques data communication and. With no network cables hampering movement, we can now connect with almost anyone, anywhere, anytime. Selling cisco smb foundation solutions networking fundamentals. These notes will be helpful in preparing for semester exams and competitive exams like gate, net and psus. Ring itself is treated as a single, shared communication medium. Nptel provides elearning through online web and video courses various streams. Extended service set based on several bss distribution system portal 802. Principles of modern cdma mimo ofdm wireless communications.
The major advantage of packet switching is that they they are used for performing data rate conversion. Computer networks nptel online videos, courses iit video. Feb 19, 2018 types of network lan, man, wan dcn lectures for b. Bluetooth is a wireless lan technology used to connect devices of different functions such as telephones, computers laptop or desktop, notebooks, cameras, printer s and so on. Ethernet is the most popular lan technology large installed base 500 million ethernet nodes more than 95% of lan traffic is ethernet based ethernet supports 10 mbs, 100 mbs fast ethernet, 1 gbs gigabit ethernet and 10 gbs 10gbe ethernet standardized by ieee 802. Nptel, an elearning initiative by the 7 indian institutes of technology and the indian institute of science with the support of the mhrd, govt. How to download all of the lectures for a course in nptel. State of the art technologies, including private cloud services daas, voip phone services and any other required consulting services as may be required to create the most efficiecnt workflow possible for your organization.
Nptel video lecture topic list created by linuxpert. Smbuf5 wan technologies circuitswitched asynchronous serial. In pa rticular, it is the ba sis of the popula r ethe rnet lan, so it is worth devoting some time to looking at it in detail. How to download all of the lectures for a course in nptel quora. Nextel uses variation on gsm cellular technology private mobile radio service police, fire, railroads. Bits pass from transmitter, past other computers and are copied by destination. Each station can take on whatever role from time to time when needed. This standard is part of a family of local area network lan standards dealing with the physical and data link layers as defined by the iso open systems interconnection reference model. The field of wireless communications has witnessed revolutionary technology developments in the last decade. Network which uses shared media has high probability of. Lan technology types and properties examcollection. During the 1980s pcs proliferated and the demand for lan technologies multiplied. The commands and webbased gui utilities for configuring lan switching and wireless are not very difficult.
So, you want to download all of the video lectures for a course in nptel. This transfer of data takes place over the computer network over which the data travels smoothly. The source is converted by an input transducer into an electrical waveform referred to as the baseband signal or message. It may serve 2 or 3 users to as many thousands of users.
At the point ma rked t0, a station ha s fini shed transmitting its frame. These lan technology is the special combinations of software and hardware which makes the network perform at a specific speed and in the certain way. Example wireless communications services can also be seen in internet technologies such as wifi. Computer networks pdf notes free download cn notes. An ess is a set of rooms and areas in the lan stations capabilities may be. The functions, features, protocol, and services of the logical link control llc sublayer, which constitutes the top sublayer in the data link layer of the isoiec 8802 lan protocol, are described. Bluetooth is, with the infrared, one of the major wireless technologies developed to achieve wpan.
Part iii wireless lan implementation focuses on what is perhaps the most important operating scale for wireless networks the local area network. The following is a sample of the lecture notes presented in the class. Cn lecture notes veer surendra sai university of technology. Group technology 52 decision variables in a mathematical model, values must be assigned to these variables.
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