DATA COMMUNICATION PRINCIPLES For Fixed and Wireless Networks
|
|
- Angel Hodge
- 5 years ago
- Views:
Transcription
1 DATA COMMUNICATION PRINCIPLES For Fixed and Wireless Networks
2 DATA COMMUNICATION PRINCIPLES For Fixed and Wireless Networks Aftab Ahmad KLUWER ACADEMIC PUBLISHERS NEW YORK, BOSTON, DORDRECHT, LONDON, MOSCOW
3 ebook ISBN: Print ISBN: Kluwer Academic Publishers New York, Boston, Dordrecht, London, Moscow Print 2003 Kluwer Academic Publishers Dordrecht All rights reserved No part of this ebook may be reproduced or transmitted in any form or by any means, electronic, mechanical, recording, or otherwise, without written consent from the Publisher Created in the United States of America Visit Kluwer Online at: and Kluwer's ebookstore at:
4 NOTE TO INSTRUCTORS As an aid to instructors interested in teaching this book as a course, exercises suitable for use in a classroom setting are available by contacting the author at Aftab@ieee.org.
5 To my parents
6 Table of Contents Preface 1. Computer Communications Networks - Introduction 1.1. Main Components The Computer System The Communications System The Networking System 1.2. Network Development Example Three Role Players Network Design 1.3. Standardization Classification of Networks Example 1 - Communication of Voice Example 2 - File Transfer Local Area Networks (LANs) Wide Area Networks (WANs) Metropolitan Area Networks (MANs) 1.5. Network Protocol Architecture Protocols Standards Protocol Architecture 1.6. Example of a Protocol Architecture Open System 1.7. Summary 1.8. Review Questions 2. Network Architectures - Examples 2.1. The OSI Reference Model (OSI-RM) OSI-RM Characteristics and Terminology Communications Model within an OSI Node Communications Across the OSI Network Inter-layer communication OSI-RM Layer Definitions and Functions 2.2. The TCP/IP Protocol Suite The Internet Protocol (IP) The Transmission Control Protocol (TCP) The Application Protocols for the Internet Lower Layers of the Internet xv
7 x 2.3. The IEEE Wireless Local Area Network (IEEE WLAN) Local Area Networks Wireless Local Area Networks The Physical Layer (PHY) The Medium Access Control (MAC) Layer 2.4. Framework for Studying a Protocol Standardization of Protocols International Telecommunications Union (ITU) The Internet Society International Organization for Standardization (ISO) European Telecommunications Standards Institute (ETSI) American National Standard Institute (ANSI) Institute of Electrical and Electronic Engineers (IEEE) Summary Review Questions Network and User Data 3.1. The Network Data 3.2. The Physical Layer Data Sequence of Events and Definitions Modulation of data and signals Digital Encoding of Data Non-Return to Zero (NRZ) Multilevel Encoding Manchester Coding General Characteristics of Bit Encoding Zero-substitution and nb/nb Translation 3.3. Passband Modulation The Carrier Signal Analog Modulation 3.4. Digital Modulation Amplitude Shift Keying (ASK) Frequency Shift Keying (FSK) Phase Shift Keying (PSK) 3.5. The User Data Digital Transmission of Voice The Sampling Theorem Pulse Coded Modulation (PCM) Delta Modulation 3.6. Text and Numerical Data ASCII (American National Standard Code for Information Interchange) ISO (ISO Latin -1)
8 xi UCS (Universal multiple-octet coded Character Set) 3.7. Summary 3.8. Review Questions The Physical Layer 4.1. Channel Impairments Signal Attenuation Delay Distortion Noise Multipath 4.2. Transmission Media 4.3. Cables in data communications Twisted Pair Copper Cables Co-axial Cable Optical Fiber Cable (OFC) 4.4. The Wireless Media Characteristics Examples of Wireless Bands 4.5. Physical Layer Protocol Example: EIA-232-F Mechanical Characteristics Electrical Characteristics Functional Characteristics Procedural Characteristics PHY for IEEE Wireless Local Area Network WLAN Types Specification 122 Frequency Hopping Spread Spectrum (FH-SS) for 2.4 GHz Direct Sequence Spread Spectrum (DS-SS) for 2.4 GHz Specification Infrared PHY for IEEE WLAN 127 The Integrated Services Digital Network (ISDN) PHY 128 Review Questions Data Link Control Layer Functions and Procedures 5.1. Data Link Layer Functions Synchronization Addressing Modes Connection setup and termination Error Control Flow Control Link Control and Testing Multiplexing
9 xii 5.2. Synchronization Synchronous Transmission Asynchronous Transmission 5.3. Connection Setup and Termination 5.4. Addressing 5.5. Error Control Parity bit Block Error Check The Cyclic Redundancy Check (CRC) 5.6. Flow Control Stop-and-Wait (SnW) Flow Control The Sliding-windows (SW) Flow Control Mechanism Link Utilization of Window Flow Control Mechanisms Full-duplex Communications Using Window Flow Control 5.7. Flow Control Based Error Recovery Mechanisms Stop-and-Wait ARQ Go-Back-N ARQ Selective Reject ARQ Maximum Window Size Link Control and Testing Review Questions 6. Data Link Control Layer Protocol Examples 6.1. HDLC (High-level Data Link Control) Protocol 6.2. HDLC Frame Types 6.3. HDLC station types Primary station Secondary station Combined stations 6.4. Operation modes Normal Response Mode (NRM) Asynchronous Balanced Mode (ABM) Asynchronous Response Mode (ARM) Extended Modes 6.5. The HDLC Frame Flag Address Field Frame Check Sequence (FCS) 6.6. HDLC Protocol Operation Selection of Timeout Connection Setup and Termination Data Exchange 6.7. Asynchronous Transfer Mode (ATM) Protocol
10 xiii The ATM Cell 6.8. ATM Protocol Procedures Virtual circuit and the frame relay protocol Error Control 6.9. Medium Access Control (MAC) Layer for IEEE Wireless LANs Random Access in LANs Collision Avoidance The Distributed Coordination Function (DCF) MAC Frame Structure MAC Frame Types Review Questions Multiplexing and Carrier Systems 7.1. Analog and Digital Transmissions Analog and Digital Multiplexing Frequency Division Multiplexing (FDM) Frequency Division Duplexing (FDD) Time Division Multiplexing (TDM) Synchronous TDM Statistical TDM Statistical Versus Synchronous TDM The TDM Switch 7.2. Digital Carrier Systems 7.3. The DS-1 Carrier System Total Bit Rate Signaling Information Problems with T-1/E-1 Systems 7.4. Synchronous Optical Network/ Synchronous Digital Hierarchy 7.5. Digital Subscriber s Line (DSL) Integration With Telephone 7.6. Multiplexing at higher layers Multiple Protocols Per Layer With Connection-oriented Mode Multiple Connections Per Protocol Review Questions The Network and Higher Layer Functions 8.1. The Network Layer 8.2. Typical Functions of Network layer Connectionless Network Layers Connection-oriented Mode 8.3. The End-to-end Layers 8.4. X.25 Packet Layer Protocol
11 xiv X.25 Packet Types 8.5. Review Questions 9. Performance Models for Data Networks 9.1. The Network Performance 9.2. Performance of the Physical Layer Protocols Performance Improvement at PHY 9.3. Data Link Layer Performance Flow Control Procedures Error Control Procedures 9.4. Performance of the MAC Sublayer 9.5. Performance of the network and higher layers Connectionless and Connection-oriented Protocols QoS Differentiation in Connectionless Protocols Performance of End-to-end Protocols 9.6. System Simulation for Performance Prediction What is Simulation? Designing a Simulation Program Versus Using a Package 9.7. Performance of Wireless and Mobile Networks The Wireless Network Channel Resource Management in Wireless Networks Mobility Management in Mobile Networks 9.8. Review Questions References Index
12 Preface In spite of the fact that the electronic communication systems started as data communication systems, much of their advancement has been in the field of voice. For decades, the Public Switched Telecommunications Network (PSTN) has set standards for communication of information all over the world. Things started changing only towards the closing of 80s when Internet and mobile systems offered competition in some ways. Despite the continued importance of PSTN, these two technologies have found their niche to sustain and grow. Wireless networks offer mobility as an add-on and the Internet brought the web, and file transfer. Though PSTN could provide the Internet-like services, it has its limitations due to its circuit switched nature. For some time, we have used the term data to distinguish the storeand-forward type of information (carried by Internet) from voice. This is because the Internet uses store and forward mechanism of transmission, which is not quite suitable for interactive, real-time communication, such as voice. In this way, PSTN, Internet and wireless networks have not quite stood in each other s way. PSTN offering toll-quality digitized voice, wireless cellular networks adding mobility to voice and data, with some degradation in quality, and the Internet allowing enormous sharing power using store-andforward protocols for data communications. Ever since their debut, all these fields of technologies have made progress, with PSTN being steady and slow, Internet being slow first and then exploding, and the wireless technology making a steady progress at a rapid speed. It is only very recently that there is a slowing in wireless market. However, with ever-increasing products in license-free wireless band, this is projected to change soon. The emphasis, however, may shift from voice to web-based applications. In fact, with the availability of high-speed data links, voice is becoming part of data. Traditionally, data was generated and processed by mainframe computers. Users accessed the computer resources through a network of dumb terminals. With developments in microchip fabrication, and reduction in memory cost, processing power shifted to terminals making them intelligent, and then as powerful as the computer itself. These days, desktop computers are mostly the processing powerhouses that mainframes once were. And these machines are capable of processing data at speeds that could easily take care of the requirements of interactive information. The introduction of IMT-2000 systems in wireless arena has reduced the gap in wireless, voice and data. Now we talk about multimedia wireless networks that could use Internet as a backbone. Consequently, the entire meaning of data and communications has changed to include real-time information and wireless networks. For a student and practitioner of data networks, the fundamental concepts of networks with
13 latest technology have become more important to master than ever before. Of course, by latest technologies, we mean packet switching and wireless data networks. This book has been written with these developments in mind. The primary audience of this book is the students, senior undergraduate or first year graduate, and personnel in the fields of computer science, electrical engineering, telecommunications, information systems, and other majors that require an elementary to medium level knowledge of data communications principles. Much of the material has been used to offer graduate and undergraduate level courses in some of the above areas. The book is a compilation from lecture notes with some addition. The approach adopted is rather straightforward; define a data network as a computer communication network that could be best understood with the help of the Open System Interconnection Reference Model (OSI-RM), recommended by the International Organization for Standardization (ISO). The OSI networking standards are not nearly as prolific in use as the Internet protocols, still the pedagogical value of the reference model makes it a good choice for a first course on data communications. Besides, the main differences between the OSI and TCP/IP networks exist at layers above the data link control. The book emphasizes only on the bottom two layers, therefore making it useful for people who would work with TCP/IP, OSI or Local Area Network. Examples of protocols are chosen, among others, from the wireless data networks. This broadens the scope of the application of work. Another salient feature of the book is a chapter on performance modeling of data networks. This is a topic that results in most innovations in technology, and yet is not easy to introduce at an elementary level. Every try has been made to let the reader appreciate the models and metrics of performance measures. Separate discussions have been included about the wireless cellular network performance and simulation of networks. Here s the organization of chapters. A major part of the book is dedicated to the understanding of data and its transmission across a single link. However, to put things in perspective, the first two chapters discuss the protocol architectures in general. Examples of OSI-RM, TCP/IP suite and IEEE Wireless LAN are discussed under this topic. Chapter 3 discusses data in most of its forms, from analog form to characters and as data exists within the network (baseband signal, passband modulated signal, to protocol data unit). Chapter 4 discusses physical layer characteristics and protocol examples. Among the protocol examples, a discussion on the physical layers of IEEE Wireless LAN has been included. Simple descriptions of some important concepts have been provided here, such as the need of physical medium dependent (PMD) sublayer, and terms such as spread spectrum communications. Chapter 5, a rather lengthy one, is devoted to the discussion of functions and duties of the data link control layer. Chapter 6 builds on Chapter 5 using example protocols. HDLC, ATM and IEEE MAC have been discussed. Chapter 7 is on multiplexing and xvi
14 xvii carrier systems, that make the backbone of transmission systems. T-1, though receding in its deployment, still makes an excellent case of studying a carrier system. Discussions on SONET/SDH and DSL are also included in this chapter. Chapter 8 provides a one shot treatment of the layers above the link layer. Terminology pertinent to these layers in introduced here. Chapter 9 completes the understanding, albeit at an elementary level, by discussing the topic of performance. The material in the book, proposed to be covered in one semester, could be adjusted according to the specialty of the audience. In the end, I would like to thank and acknowledge numerous anonymous people who have contributed to this field in many ways. I have used many books, articles, websites and documents of numerous companies and standardization agencies in learning the subject, some repeatedly. Thanks are due to the reviewers of the manuscript. Also, thanks are due to the companies that designed software and hardware that went in preparing the manuscript. I also take this opportunity to thank Alex Green of the Kluwer Academic Publishers for his persistence in making this book a reality. Thanks are due to Melissa Sullivan and Deborah Doherty of the Kluwer Academic Publishers for help with formatting the manuscript. Most of all, I am much indebted to my wife for her patience during the preparation of the manuscript, especially during the final stage. Aftab Ahmad
DATA COMMUNICATION PRINCIPLES For Fixed and Wireless Networks
DATA COMMUNICATION PRINCIPLES For Fixed and Wireless Networks This page intentionally left blank DATA COMMUNICATION PRINCIPLES For Fixed and Wireless Networks Aftab Ahmad KLUWER ACADEMIC PUBLISHERS NEW
More informationTIME SCHEDULE. 2 Physical Layer 15. Course General Outcomes: Sl. G.O On completion of this course the student will be able :
COURSE TITLE : DATA COMMUNICATION COURSE CODE : 3151 COURSE CATEGORY : B PERIODS/WEEK : 4 PERIODS/SEMESTER : 60 CREDITS : 4 TIME SCHEDULE MODULE TOPICS PERIODS 1 Concepts of Data Communication 15 2 Physical
More informationDATA COMMUNICATIONS AND COMPUTER NETWORKS
DATA COMMUNICATIONS AND COMPUTER NETWORKS Second Edition PRAKASH C. GUPTA Formerly Head Department of Information Technology Maharashtra Institute of Technology Pune Delhi-110092 2014 DATA COMMUNICATIONS
More informationData Communications SYLLABUS. Transmission Impairments, Transmission Media. Data-Digital Signals, Analog Data-analog Signals.
i SYLLABUS UNIT - 1 INTRODUCTION,, DATA A TRANSMISSION AND DATA A ENCODING Introduction : Communication Model, Data Communication Networking, Protocols and Architecture, Standards. Data Transmission :
More informationModule 1. Introduction. Version 2, CSE IIT, Kharagpur
Module 1 Introduction Version 2, CSE IIT, Kharagpur Introduction In this module we shall highlight some of the basic aspects of computer networks in two lessons. In lesson 1.1 we shall start with the historical
More informationComputer Networks. Andrew S. Tanenbaum
Computer Networks Third Edition Andrew S. Tanenbaum 1 ; l Vrije Universiteit Amsterdam, The Netherlands For book and bookstore information Prentice Hall PTR Upper Saddle River, New Jersey 07458 CONTENTS
More informationTelecommunications II TEL 202 Spring, 2004
Telecommunications II TEL 202 Spring, 2004 Time: Lecture: Thursday 12:20 3:30 Lynn Campus, Room LW207 Laboratory: Thursday 4:00 5:00 Lynn Campus, Room LE201 Instructor: Scott Stimpson Office: Lynn, W228
More informationContents. Introduction to Networking. Preface...i. Introduction... xix
Contents Introduction to Networking Introduction to Networking Preface...i Key Topics...i Course Objectives...ii Pedagogical Features...ii Learning Objectives, Unit Summaries, Discussion Questions, and
More informationDCN Questions CHAPTER 1:- NETWORKING FUNDAMENTALS
DCN Questions CHAPTER 1:- NETWORKING FUNDAMENTALS Q1. What are the four fundamental Characteristics of Data Communication? On which effectiveness of data communication is depended? Q2. Define data communication?
More informationCommunications and Networking 1
Communications and Networking 1 ET4254 CS4225 CS5222 Lecturer: Dr. Kevin Murphy kevin.murphy@ul.ie Electronic & Computer Engineering Department, University of Limerick, Limerick 1 ET4254 - Communications
More informationPROTOCOLS FOR HIGH-EFFICIENCY WIRELESS NETWORKS
PROTOCOLS FOR HIGH-EFFICIENCY WIRELESS NETWORKS PROTOCOLS FOR HIGH-EFFICIENCY WIRELESS NETWORKS by Alessandro Andreadis Giovanni Giambene KLUWER ACADEMIC PUBLISHERS NEW YORK, BOSTON, DORDRECHT, LONDON,
More informationOverview of Networks
CMPT765/408 08-1 Overview of Networks Qianping Gu 1 Overview of Networks This note is mainly based on Chapters 1-2 of High Performance of Communication Networks by J. Walrand and P. Pravin, 2nd ed, and
More informationCOURSE CONTENT. Course Content Illustration below:
COURSE CONTENT Course Course code: EIE418 Course title: Data Communications and Computer Networks 3 Units Course status: Compulsory Course Duration Three hours per week for 15 weeks (45hours) Lecturer
More informationTransmission SIGNALs
Chapter 6 Digital Communications Basics 6.1 Introduction 6.2 Transmission media 6.3 Source of signal impairment 6.4 Asynchronous Transmission 6.5 Synchronous Transmission 6.6 Error Detection Methods 6.7
More informationData and Computer Communications Chapter 1 Data Communications, Data Networks, and the Internet
Data and Computer Communications Chapter 1 Data Communications, Data Networks, and the Internet Ninth Edition by William Stallings Data and Computer Communications, Ninth Edition by William Stallings,
More informationData Communications. From Basics to Broadband. Third Edition. William J. Beyda
Data Communications From Basics to Broadband Third Edition William J. Beyda University of California Extension, Berkeley Siemens Information and Communication Networks, Inc. Prentice Hall Upper Saddle
More informationand Networks Data Communications Second Edition Tata McGraw Hill Education Private Limited Managing Director SoftExcel Services Limited, Mumbai
Data Communications and Networks Second Edition ACHYUT S GODBOLE Managing Director SoftExcel Services Limited, Mumbai ATUL KAHATE Senior Consultant Oracle Financial Services Software Limited, Pune Tata
More informationLecture 1 Overview - Data Communications, Data Networks, and the Internet
DATA AND COMPUTER COMMUNICATIONS Lecture 1 Overview - Data Communications, Data Networks, and the Internet Mei Yang Based on Lecture slides by William Stallings 1 OUTLINE Data Communications and Networking
More informationNetwoking Essentials
Mark Sportack Walter J. Glenn Sams' Teach Yourself MCSE Netwoking Essentials SAMS PUBLISHING IN 14 DAYS Sams Publishing is an independant entity from Microsoft Corporation, and not affiliated with Microsoft
More informationElectrical and Computer Engineering Technology
ECET 3400 Spring 2012 Data Communications Southern Polytechnic State University Electrical and Computer Engineering Technology Instructor Information Instructor: Dr. Craig A. Chin, Assistant Professor
More informationData Communication. Introduction
Data Communication Introduction Course Information Assistant Instructor Reza Hassanpour Faris Serdar Taşel Office: L214 Office: L205 Phone: 2331338 Phone: 2331357 Email: reza@cankaya.edu.tr Email: fst@cankaya.edu.tr
More informationSAE6A/SAZ6B DATA COMMUNICATION AND NETWORKING UNIT : I To V
SAE6A/SAZ6B DATA COMMUNICATION AND NETWORKING UNIT : I To V 1 UNIT 1:Syllabus Introduction to Data Communication Network Protocols & standards standards organizations Line Configuration Topology Transmission
More informationIT4405 Computer Networks (Compulsory)
IT4405 Computer Networks (Compulsory) INTRODUCTION This course provides a comprehensive insight into the fundamental concepts in data communications, computer network systems and protocols both fixed and
More informationMORGANSTATEUNIVERSITY DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING. EEGR510 Communications Networks Credits: 3 COURSE SYLLABUS
MORGANSTATEUNIVERSITY DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING EEGR510 Communications Networks Credits: 3 COURSE SYLLABUS Instructor: Dr. Farzad Moazzami Office: SEB 334 Telephone No. 443-885-4204
More informationii) Do the following conversions: output is. (a) (101.10) 10 = (?) 2 i) Define X-NOR gate. (b) (10101) 2 = (?) Gray (2) /030832/31034
No. of Printed Pages : 4 Roll No.... rd 3 Sem. / ECE Subject : Digital Electronics - I SECTION-A Note: Very Short Answer type questions. Attempt any 15 parts. (15x2=30) Q.1 a) Define analog signal. b)
More informationComputer Facilities and Network Management BUS3150 Tutorial - Week 13
Computer Facilities and Network Management BUS3150 Tutorial - Week 13 *** FOR TUTORS ONLY *** The answers provided here are only brief guides. If you have any comments or suggestions for improvement to
More informationObjectives. Learn how computers are connected. Become familiar with different types of transmission media
Objectives Learn how computers are connected Become familiar with different types of transmission media Learn the differences between guided and unguided media Learn how protocols enable networking 2 Objectives
More informationComputer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and
Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and Networking Technologies Mean? p. 3 What Is a Computer Network?
More informationCHAPTER -1. Introduction to Computer Networks
CHAPTER -1 Introduction to Computer Networks PRELIMINARY DEFINITIONS computer network :: [Tanenbaum] a collection of autonomous computers interconnected by a single technology. communications network ::a
More informationMORGANSTATEUNIVERSITY DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING. EEGR410 Introduction to Networks. Credits: 3 COURSE SYLLABUS
Instructor: Office: Telephone No. Email Address: Office Hours: References MORGANSTATEUNIVERSITY DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING EEGR410 Introduction to Networks Credits: 3 COURSE SYLLABUS
More informationApplied Data Communications and Networks
Applied Data Communications and Networks Applied Data Communications and Networks W.Buchanan Senior Lecturer Department of EECE Napier University Edinburgh UK CHAPMAN & HALL London Weinheim. New York Tokyo
More informationNetwork Technology and Data Communications
SQA Advanced Unit specification General information Unit title: Network Technology and Data Communications Unit code: HP2X 48 Superclass: XM Publication date: August 2017 Source: Scottish Qualifications
More informationUnderstanding TeleCom Networks Today II The World of Data
Understanding The World of Data Course Description Explore the world of data 2.5/3G, Optical, Frame Relay, ATM Networks, Wireless and more... Networks are converging. No more discrete data and voice networks
More informationCommunication Networks
Communication Networks Chapter 3 Multiplexing Frequency Division Multiplexing (FDM) Useful bandwidth of medium exceeds required bandwidth of channel Each signal is modulated to a different carrier frequency
More informationIntroduction to Network Technologies & Layered Architecture BUPT/QMUL
Introduction to Network Technologies & Layered Architecture BUPT/QMUL 2015-3-5 Review What is the Internet? How does it work? When & how did it come about? Who controls it? Where is it going? 2 Agenda
More informationCCNA Exploration1 Chapter 7: OSI Data Link Layer
CCNA Exploration1 Chapter 7: OSI Data Link Layer LOCAL CISCO ACADEMY ELSYS TU INSTRUCTOR: STELA STEFANOVA 1 Explain the role of Data Link layer protocols in data transmission; Objectives Describe how the
More informationSRM ARTS AND SCIENCE COLLEGE SRM NAGAR, KATTANKULATHUR
SRM ARTS AND SCIENCE COLLEGE SRM NAGAR, KATTANKULATHUR 603203 DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS LESSON PLAN (207-208) Course / Branch : M.Sc CS Total Hours : 45 Subject Name : Computer Networks
More informationNetworks 15.2 Multiplexing Technologies Access Networks 15.5 Common Peripheral Interfaces
Chapter 15 Computer and Multimedia Networks 15.11 Basics of Computer and Multimedia Networks 15.2 Multiplexing Technologies 15.3 LAN and WAN 15.4 Access Networks 15.5 Common Peripheral Interfaces 15.6
More informationData Communications. Course Design Data Communications. Pre/Post Test (80 Questions/80 Points) Upon Request None No No No
Data Communications Course Design 2005-2006 Course Information Organization Division EASTERN ARIZONA COLLEGE Business Course Number CMP 205 Title Credits 3 Developed by Lecture/Lab Ratio Transfer Status
More informationDATA AND COMPUTER COMMUNICATIONS
DATA AND COMPUTER COMMUNICATIONS Ninth Edition William Stallings Boston Columbus Indianapolis New York San Francisco Upper Saddle River Amsterdam Cape Town Dubai London Madrid Milan Munich Paris Montreal
More informationNetworks 15.2 Multiplexing Technologies Access Networks 15.5 Common Peripheral Interfaces
Chapter 15 Computer and Multimedia Networks 15.11 Basics of Computer and Multimedia Networks 15.2 Multiplexing Technologies 15.3 LAN and WAN 15.4 Access Networks 15.5 Common Peripheral Interfaces 15.6
More informationOptical networking technology
1 Optical networking technology Technological advances in semiconductor products have essentially been the primary driver for the growth of networking that led to improvements and simplification in the
More informationSRM ARTS AND SCIENCE COLLEGE SRM NAGAR, KATTANKULATHUR
SRM ARTS AND SCIENCE COLLEGE SRM NAGAR, KATTANKULATHUR 603203 DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS QUESTION BANK (2017-2018) Course / Branch : BCA Semester /Year : EVEN / III Subject Name : Data
More informationSample. Overview of WAN Connections. Objectives. Module 1
Module 1 Objectives This module introduces the basic elements of WAN connections and describes the role each element plays in creating that connection. After completing this module, you should be able
More informationWilliam Stallings Data and Computer Communications. Chapter 7 Data Link Control
William Stallings Data and Computer Communications Chapter 7 Data Link Control Flow Control Ensuring the sending entity does not overwhelm the receiving entity Preventing buffer overflow Transmission time
More informationComputer Network : Lecture Notes Nepal Engineering College Compiled by: Junior Professor: Daya Ram Budhathoki Nepal Engineering college, Changunarayan
Computer Network : Lecture Notes Nepal Engineering College Compiled by: Junior Professor: Daya Ram Budhathoki Nepal Engineering college, Changunarayan Chapter3: OSI Reference Model: Network Software: Network
More informationFrequency: it refers to the number of periods in 1 s. It is formally expressed in Hertz (Hz)
Chapter2: Peak amplitude: it is the absolute value of the highest intensity. Frequency: it refers to the number of periods in 1 s. It is formally expressed in Hertz (Hz) Phase: it describes the position
More informationINTRODUCTION DATA COMMUNICATION TELECOMMUNICATIONS SYSTEM COMPONENTS 1/28/2015. Satish Chandra satish0402.weebly.com
INTRODUCTION DATA COMMUNICATION Satish Chandra satish0402.weebly.com The term telecommunication means communication at a distance. The word data refers to information presented in whatever form is agreed
More informationM242 COMPUTER NETWORS AND SECURITY
M242 COMPUTER NETWORS AND SECURITY 2.1. Network Models: UNIT - II OSI MODEL AND LAN PROTOCOLS 1. Explain Network model A network is a combination of hardware and software that sends data from one location
More informationNETWORK SECURITY ITEC 435
NETWORK SECURITY ITEC 435 Agenda Chapter 2: Introduction to Networking Introduction to Networking Networking Fundamentals Reasons to Network Getting the Message Across Analog Information on an Analog Medium
More informationVoIP Dictionary, Glossary and Terminology
VoIP Dictionary, Glossary and Terminology The following provides a glossary of terms and definitions that are commonly used in VoIP Solutions. We hope this will provide a good reference for you during
More informationProgram Title: Telecommunication Engineering Technology Postsecondary Number: (AS) (AAS
July 2006 Florida Department of Education Program Title: Telecommunication Engineering Technology CIP Number 1615030302 (AS) 0615030302 (AAS) Length AS/AAS Degree 64 Credits After successfully completing
More informationNetwork protocols and. network systems INTRODUCTION CHAPTER
CHAPTER Network protocols and 2 network systems INTRODUCTION The technical area of telecommunications and networking is a mature area of engineering that has experienced significant contributions for more
More informationLecture 15: Multiplexing (2)
Lecture 15: Multiplexing (2) Last Lecture Multiplexing (1) Source: chapter 8 This Lecture Multiplexing (2) Source: chapter8 Next Lecture Circuit switching (1) Source: chapter9 Digital Carrier Systems Hierarchy
More informationCS 4453 Computer Networks Winter
CS 4453 Computer Networks Chapter 2 OSI Network Model 2015 Winter OSI model defines 7 layers Figure 1: OSI model Computer Networks R. Wei 2 The seven layers are as follows: Application Presentation Session
More informationWireless Networks (CSC-7602) Lecture 1 (27 Aug 2007)
Wireless Networks (CSC-7602) Lecture 1 (27 Aug 2007) Seung-Jong Park (Jay) http://www.csc.lsu.edu/~sjpark 1 Handouts Class information Schedule (check online frequently) 2 1 Goals Principles on Wireless
More informationDATA COMMUNICATIONS AND DISTRIBUTED NETWORKS
DATA COMMUNICATIONS AND DISTRIBUTED NETWORKS UYLESS D. BLACK CONTENTS PREFACE xv 1 INTRODUCTION 1 Purpose of Data Communications Systems and Networks 1 Purpose of Data Communications Systems 2 The Components
More informationFlow control: Ensuring the source sending frames does not overflow the receiver
Layer 2 Technologies Layer 2: final level of encapsulation of data before transmission over a physical link responsible for reliable transfer of frames between hosts, hop by hop, i.e. on a per link basis
More informationComputer Networks. 9/29/2017 Vasile Dadarlat --Computer Networks 1
Computer Networks Lecturer: Prof. Vasile Dadarlat, PhD Grading Type: normal, Credits:5 No prerequisite modules required Basic knowledge in Physics, Mathematics, Computer Architecture feel free to ask questions
More informationDigiPoints Volume 1. Leader Guide. Module 12 Asynchronous Transfer Mode. Summary. Outcomes. Objectives. Prerequisites
Asynchronous Transfer Mode Page 12.i DigiPoints Volume 1 Module 12 Asynchronous Transfer Mode Summary This last module of, covers ATM, and provides an end-to-end data communications model that draws on
More informationPART III. Data Link Layer MGH T MGH C I 204
PART III Data Link Layer Position of the data-link layer Data link layer duties LLC and MAC sublayers IEEE standards for LANs Chapters Chapter 10 Error Detection and Correction Chapter 11 Data Link Control
More informationMonash University SAMPLE EXAM. Faculty Of Information Technology. Computer Facilities and Network Management
Official Use Only Monash University SAMPLE EXAM Faculty Of Information Technology EXAM CODES: TITLE OF PAPER: EXAM DURATION: READING TIME: BUS3150 Computer Facilities and Network Management 2 hours writing
More informationAdvanced Mobile Computing and Networking - CS 560. Wireless Technologies. Bluetooth. Bluetooth. Bluetooth. Bluetooth 7/3/2014.
Advanced Mobile Computing and Networking - CS 560 Assessment CA 40% - Assignment 20% - 2 Tests 10% each Exam 60% Wireless Technologies, Infrared Data Association (),, and Institute of Electrical and Electronic
More informationData link layer functions. 2 Computer Networks Data Communications. Framing (1) Framing (2) Parity Checking (1) Error Detection
2 Computer Networks Data Communications Part 6 Data Link Control Data link layer functions Framing Needed to synchronise TX and RX Account for all bits sent Error control Detect and correct errors Flow
More informationPhysical Layer: Multiplexing, Spectrum Spreading and Switching. Covers Chapters# 06 & 08 from Text Book
Physical Layer: Multiplexing, Spectrum Spreading and Switching Covers Chapters# 06 & 08 from Text Book 2 Multiplexing From Chapter#06 3 Multiplexing If bandwidth of a medium linking two devices is greater
More informationChapter 2 Communicating Over the Network
Chapter 2 Communicating Over the Network Elements of Communication Communicating the Messages Continuous stream of bits 00101010100101010101010101010101010 I have to wait Single communications (e.g. video,
More informationClass X Subject : IT (Vocational) Chapter -1 Ouestion / Answer
Class X Subject : IT (Vocational) Chapter -1 Ouestion / Answer Q1 What is a computer network? A computer network, often simply referred to as a network, is a collection of computers and other hardware
More informationChapter 11: Wide-Area Networks and the Internet
Chapter 11: Wide-Area Networks and the Internet MULTIPLE CHOICE 1. MAN stands for: a. Manchester Access Network c. Metropolitan-Area Network b. Multiple-Area Network d. Multiple Access Network 2. Packet
More informationWireless Networks. Communication Networks
Wireless Networks Communication Networks Types of Communication Networks Traditional Traditional local area network (LAN) Traditional wide area network (WAN) Higher-speed High-speed local area network
More informationNetwork Connectivity and Mobility
Network Connectivity and Mobility BSAD 141 Dave Novak Topics Covered Lecture is structured based on the five elements of creating a connected world from the text book (with additional content) 1. Network
More informationCOURSE OUTLINE. School of Engineering Technology and Applied Science. Computer Systems & Network Technology / Technician
COURSE OUTLINE SCHOOL: School of Engineering Technology and Applied Science DEPARTMENT: Information and Communication Engineering Technology (ICET) PROGRAM: Computer Systems & Network Technology / Technician
More informationData Link Protocols DATA LINK PROTOCOLS. Asynchronous Protocols. Types of Data Link Protocols XMODEM. Asynchronous Protocols.
Data Link Protocols DATA LINK PROTOCOLS Data Link Protocols are sets of rule and regulations used to implement data link layer. They contain rules for: Line Discipline Gursharan Singh Tatla mailme@gursharansingh.in
More informationChapter 5. Voice Network Concepts. Voice Network Concepts. Voice Communication Concepts and Technology
Chapter 5 Voice Communication Concepts and Technology Voice Network Concepts Telephone switchboard - Circa 1898 Voice Network Concepts Telephone calls are connected from source via circuit switching. Circuit
More information1. Data Link Layer Protocols
1. Data Link Layer Protocols Purpose of the Data Link Layer The Data Link Layer Purpose of the Data Link Layer Data Link Sublayers Network LLC Sublayer Data Link Physical MAC Sublayer 802.3 Ethernet 802.11
More informationIntroduction to Information Technology Turban, Rainer and Potter John Wiley & Sons, Inc. Copyright 2005
Introduction to Information Technology Turban, Rainer and Potter John Wiley & Sons, Inc. Copyright 2005 Network and Telecommunications Basics Chapter Outline The telecommunications system Network services
More informationCh. 4 - WAN, Wide Area Networks
1 X.25 - access 2 X.25 - connection 3 X.25 - packet format 4 X.25 - pros and cons 5 Frame Relay 6 Frame Relay - access 7 Frame Relay - frame format 8 Frame Relay - addressing 9 Frame Relay - access rate
More informationChapter 15 Computer and Multimedia Networks
Chapter 15 Computer and Multimedia Networks 15.1 Basics of Computer and Multimedia Networks 15.2 Multiplexing Technologies 15.3 LAN and WAN 15.4 Access Networks 15.5 Common Peripheral Interfaces 15.6 Further
More informationIntroduction to Wireless Networking ECE 401WN Spring 2008
Introduction to Wireless Networking ECE 401WN Spring 2008 Lecture 2: Communication Networks The first major topic we will study will be WLANs. But before that, we need to consider a few basics of networking.
More informationModule 3. Wide Area Networking (WAN)
Module 3 Wide Area Networking (WAN) When many nodes or LAN s are connected together in a large scale, we have a WAN. This may be world wide. Because of the separation of the nodes, the Public Data Network
More informationCommunication Networks - 3 general areas: data communications, networking, protocols
Communication Networks - Overview CSE 3213 Fall 2011 1 7 September 2011 Course Content 3 general areas: data communications, networking, protocols 1. Data communications: basic concepts of digital communications
More informationChapter 4: Network Access
4.0.1.1 Chapter 4: Network Access To support our communication, the OSI model divides the functions of a data network into layers. Each layer works with the layers above and below to transmit data. 4.0.1.2
More informationGUJARAT TECHNOLOGICAL UNIVERSITY, AHMEDABAD, GUJARAT. Course Curriculum. DATA COMMUNICATION AND NETWORKING (Code: ) Biomedical engineering
GUJARAT TECHNOLOGICAL UNIVERSITY, AHMEDABAD, GUJARAT Course Curriculum DATA COMMUNICATION AND NETWORKING (Code: 3330302) Diploma Programmes in which this course is offered Semester in which offered Biomedical
More informationSYLLABUS. Departmental Syllabus
SYLLABUS DATE OF LAST REVIEW: 02/2013 CIP CODE: 11.0801 SEMESTER: COURSE TITLE: Networking I COURSE NUMBER: CIST- 0117 CREDIT HOURS: 3 INSTRUCTOR: OFFICE LOCATION: OFFICE HOURS: TELEPHONE: EMAIL: PREREQUISITE(S):
More informationKIBABII UNIVERSITY COLLEGE DEPARTMENT COMPUTER SCIENCE & IT ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO QUESTIONS IN SECTION B
KIBABII UNIVERSITY COLLEGE DEPARTMENT COMPUTER SCIENCE & IT TITLE: DATACOMMUNICATION COURSE CODE: 223 SECTION A: 30 Marks ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO QUESTIONS IN SECTION B TIME ALLOWED:
More information3+1+0 (3) IT 201 T. Principles of Information and Technology Systems. Prereq: CS 110T IT 222 T. Communications and Networks Fundamentals (4)
Principles of Information and Technology Systems IT 201 T Prereq: CS 110T This course aims to develop an understanding of the components of computing and their relationships, significant impacts of IT
More informationDigital Communication Networks
Digital Communication Networks MIT PROFESSIONAL INSTITUTE, 6.20s July 25-29, 2005 Professor Muriel Medard, MIT Professor, MIT Slide 1 Digital Communication Networks Introduction Slide 2 Course syllabus
More informationSwitched Multimegabit Data Service
CHAPTER 14 Chapter Goals Tell how SMDS works, and describe its components. Describe the operational elements of the SMDS environment, and outline its underlying protocol. Discuss related technologies.
More informationLecture 6 Datalink Framing, Switching. From Signals to Packets
Lecture 6 Datalink Framing, Switching David Andersen Department of Computer Science Carnegie Mellon University 15-441 Networking, Spring 2005 http://www.cs.cmu.edu/~srini/15-441/s05/ 1 From Signals to
More informationChapter 1: Introduction
EE4272: Computer Networks Chapter 1: Introduction Instructor: Tricia Chigan Dept.: Elec. & Comp. Eng. 1) Data Communications: Deals with the transmission of signals in a reliable & efficient manner. Topics:
More informationSwitched Multimegabit Data Service (SMDS)
CHAPTER 14 Switched Multimegabit Data Service (SMDS) Background Switched Multimegabit Data Service (SMDS) is a high-speed, packet-switched, datagram-based WAN networking technology used for communication
More informationPSD2A Computer Networks. Unit : I-V
PSD2A Computer Networks Unit : I-V 1 UNIT 1 Introduction Network Hardware Software Reference Models OSI and TCP/IP models Example networks: Internet, ATM, Ethernet and Wireless LANs Physical layer Theoretical
More informationWhat is the fundamental purpose of a communication system? Discuss the communication model s elements.
What is the fundamental purpose of a communication system? The fundamental purpose of a communication system is the exchange of data between two parties. Discuss the communication model s elements. The
More informationLecture 8 Winter 2006 Enterprise and Personal Communications Networks
Information Technology Lecture 8 Winter 2006 Enterprise and Personal Communications Networks 1 Objectives Identify the reasons that multiuser systems are used in business. Describe eight network service
More informationCome & Join Us at VUSTUDENTS.net
Come & Join Us at VUSTUDENTS.net For Assignment Solution, GDB, Online Quizzes, Helping Study material, Past Solved Papers, Solved MCQs, Current Papers, E-Books & more. Go to http://www.vustudents.net and
More informationData Communications and Networks Spring Syllabus and Reading Assignments
Data Communications and Networks Spring 2018 Syllabus and Assignments Revision Date: January 24, 2018 Course : This course teaches the design and implementation techniques essential for engineering robust
More informationLocal Area Networks NETW 901
Local Area Networks NETW 901 Lecture 4 Wireless LAN Course Instructor: Dr.-Ing. Maggie Mashaly maggie.ezzat@guc.edu.eg C3.220 1 Contents What is a Wireless LAN? Applications and Requirements Transmission
More informationChapter 7: Data Link Control. CS420/520 Axel Krings Page 1
Chapter 7: Data Link Control CS420/520 Axel Krings Page 1 Data Link Control Protocols Need layer of logic above Physical to manage exchange of data over a link frame synchronization flow control error
More informationChapter 7: Data Link Control. Data Link Control Protocols
Chapter 7: Data Link Control CS420/520 Axel Krings Page 1 Data Link Control Protocols Need layer of logic above Physical to manage exchange of data over a link frame synchronization flow control error
More informationLecture 4. Data Transmission Modes and Switching. Data Transmission & Switching 1-1
Lecture 4 Data Transmission Modes and Switching Data Transmission & Switching 1-1 Agenda Introduction to Data Transmission Modes Parallel and Serial Transmission Transmission Media Guided and unguided
More informationData Transmission and Home Networks. Gralla: part 2
Data Transmission and Home Networks Gralla: part 2 A Home Network Home network Firewall Hub/ Switch 192.168.1.1/ 137.42.12.12 ADSL Modem Internet Operator's services 192.168.1.140 192.168.1.100 External
More information