Data communication lectures pdf

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Lecture – 1 Introduction and Course Outline – Data Communication 397,760 views Oct 20, 2008 745 Dislike Share Save nptelhrd 1.99M subscribers Lecture Series on Data Communication by Prof.A. Pal, 1.1.1 Components: A data communication s system ha s five components. 1. Mess age. The me ss age is the in formation (data ) to be communicated. Popula r forms of in formation include text, numbe rs, pictu res, audio, and video. 2. Sender. The sender is the device that send s the data me ss age. 21 mins read. Download Digital Communication Notes, PDF, Books, Syllabus for B Tech ECE, EEE, CSE, BCA 2021. We provide complete digital communication PDF. Digital Communication study material includes digital communication notes, digital communication book, courses, case study, syllabus, question paper, MCQ, questions and answers and available remote communication takes place over distance. 1.1.1 Components: A data communications system has five components. 1. Message. The message is the information (data) to be communicated. Popular forms of information include text, numbers, pictures, audio, and video. 2. Sender. The sender is the device that sends the data message. Whoops! There was a problem previewing Data Communications and Networking – Behrouz A. Forouzan.fourth edition[A4].pdf. Retrying. Datagram networks: the Internet model nNo call setup at network layer nRouters: no state about end-to-end connections n No network-level concept of “connection” nPackets forwarded using destination host address nRouting or forwarding table n Packets between same source-dest pair may take different paths application transport network data link physical Token Ring (IBM 1970) Machines are on a ring topology Messages are transmitted and relayed in only one direction Each message contains information about sender and receiver When a message reaches its destination, the machine keeps a copy of it, but continues relaying it When a message reaches back to sender, the sender knows it must have been delivered and stops Data Communications Interface Synchronization. Operation of a sender and a receiver in unison. Asynchronous transmission. Each character in data is treated independently Each character starts with a special start bit to alert the receiver Receiver continuously samples and looks for beginning of next character Not good for large data due to Most books actually tackle communication in a technology oriented way, so lectures will tend to “cut across” a text. A favourite is: Computer Networks: A Systems Approach, Peterson and Davie, 3rd Ed, Morgan Kaufman Other good ones are: Data Communications Computer Networks and OSI, Halsall, 2nd Ed, Addison Wesley Lecture Notes Course Code – BCS-308 Course Name – INTERNET & WEB TECHNOLOGY-I (3-1-0) Cr.-4 DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING, IT information presented in whatever form is agreed upon by the parties creating and using the data. Data communications are the exchange of data between two devices via some form of transmission medium d Data communications: signals over wires and bits over signals d Networks: packets over bits d Internets: datagrams over packets d Network programming: application data over the Internet d Cross-functional concepts and technologies: network configuration, control, and management Computer Networks and Internets — Module 1 6 Spring, 2014 Data Communication & Computer Networking Lecture Note By ENGR. YEKINI N. A. [NCE, BSc, MSc, NCS, IACSIT, IEEE, IAENG, COREN,] LECTURER FROM SCHOOL OF INDUSTRIAL & Data Communication & Computer Networking Lecture Note By ENGR. YEKINI N. A. [NCE, BSc, MSc, NCS, IACSIT, IEEE, IAENG, COREN,] LECTURER FROM SCHOOL OF INDUSTRIAL & “Data Communication is the exchange of data (in the form of 0’s and 1’s) between two devices (computers) via some form of the transmission medium.” LOCAL and REMOTE Data Communication LOCAL Data communication is considered to be local if the communicating devices are present in the same building or a similarly restricted geographical area