Introduction. The fundamental purpose of data communications is to exchange information between user's computers, terminals and applications programs.
|
|
|
- Preston Gaines
- 6 years ago
- Views:
Transcription
1 Introduction The fundamental purpose of data communications is to exchange information between user's computers, terminals and applications programs. Simplified Communications System Block Diagram Intro-1
2 Data Communications Networking! In its simplest form data communications takes place between two devices that are directly connected by some form of point-to-point transmission medium.! Often it is impractical for two devices to be directly connected: a) The devices are far apart, b) There is a large set of devices to be interconnected.! The solution is to connect each device to a COMMUNICATIONS NETWORK. Interconnection via a Communications Network Intro-2
3 Station Interconnection The Problem with the Fully Connected Topology Intro-3
4 Switched Communications Networks Communications between stations is accomplished via transmission and switching. A Generic Switched Communications Network! Common Switching Methods: - Circuit Switching - Message Switching - Packet Switching Intro-4
5 1. Circuit Switching: Switching Methods! Prior to the start of data transmission, an end-to-end (station-to-station) physical path must be established.! During data transmission, all channels in the path are used simultaneously.! The entire path remains dedicated to the pair of communicating stations until circuit release.! Three phased operation: - Circuit Establishment (Allocation of Resources) - Data Transfer (Use of Resources) - Circuit Termination (Deallocation of Resources) 2. Message Switching:! A MESSAGE represents a logical unit of information that one station wishes to send to another station.! No dedicated path is established prior to data transfer. Instead, the message will travel over one channel at a time.! A message travels (hops) through the network from node-to-node, in a store-and-forward fashion, until it reaches its final destination. Intro-5
6 3. Packet Switching:! Messages are decomposed into smaller units of data called PACKETS and then sent out packet-by-packet.! Many packets of the same message can be in transit at the same time.! Reassembly of the original message is required at the destination. Intro-6
7 Packet Switching Alternatives A. Virtual Circuit Packet Switching:! A LOGICAL CONNECTION (virtual circuit) is established between communicating stations prior to the transmission of data packets.! The logical connection establishes the route over which all data packets will travel between stations.! Packet delivery across the virtual circuit will be in sequential order.! Connection-Oriented Operation: - Connection Establishment Phase - Data Transfer Phase - Connection Termination Phase Virtual Circuit Packet Switching Intro-7
8 B. Datagram Packet Switching:! Each data packet is treated independently from one another.! Each packet finds its own route through the network.! Packets may arrive at the destination out of sequential order.! Connectionless Operation: - Data Transfer Phase Datagram Packet Switching Intro-8
9 General Comparison of Switching Methods Circuit Switching:! Good for long, continuous transmissions.! Good for time-constrained communications. Packet Switching:! Good for data transmission that is BURSTY in nature.! Provides fast service to small users even in the presence of large ones. Intro-9
10 Broadcast Communications Networks A transmission from one station can be received by all other station within the network. Sample Networks:! Satellite Networks! Radio Networks! Local Area Networks Intro-10
11 Sample Broadcast Network Topologies Satellite Network Topology Radio Network Topology Bus Topology Ring Topology! Common Access Methods: - Contention (e.g., CSMA/CD, etc.) - Reservation - Token Passing Intro-11
Introduction to Networking
Introduction to Networking The fundamental purpose of data communications is to exchange information between user's computers, terminals and applications programs. Simplified Communications System Block
Communication 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
Revision of Previous Lectures
Lecture 15 Overview Last Lecture Local area networking This Lecture Wide area networking 1 Source: chapters 8.1-8.3, 17.1, 18.1, 18.2 Next Lecture Wide area networking 2 Source: Chapter 20 COSC244 Lecture
Review of Topology and Access Techniques / Switching Concepts
Review of Topology and s / Concepts BSAD 141 Dave Novak Sources: Network+ Guide to Networks, Dean 2013 Overview Three base wired topologies Bus, star, ring Two wireless topologies Ad-hoc, infrastructure
Wide area networks: packet switching and congestion
Wide area networks: packet switching and congestion Packet switching ATM and Frame Relay Congestion Circuit and Packet Switching Circuit switching designed for voice Resources dedicated to a particular
Networks: Access Management
Networks: Access Management Class Notes # 3 Protocols and Layers (part 1) September 19, 2003 Functions A small set of functions form the basis of all protocols. Not all protocols have all functions; this
COMPUTER NETWORK Model Test Paper
Model Test Paper Question no. 1 is compulsory. Attempt all parts. Q1. Each question carries equal marks. (5*5 marks) A) Difference between Transmission Control Protocol (TCP) and User Datagram Protocol.
This Lecture. BUS Computer Facilities Network Management. Switching Network. Simple Switching Network
This Lecture BUS0 - Computer Facilities Network Management Switching networks Circuit switching Packet switching gram approach Virtual circuit approach Routing in switching networks Faculty of Information
Data Networks. Lecture 1: Introduction. September 4, 2008
Data Networks Lecture 1: Introduction September 4, 2008 Slide 1 Learning Objectives Fundamental aspects of network Design and Analysis: Architecture: layering, topology design, switching mechanisms Protocols:
Introduction to LAN Protocols
CHAPTER 2 Introduction to LAN Protocols This chapter introduces the various media-access methods, transmission methods, topologies, and devices used in a local area network (LAN). Topics addressed focus
The History and the layers of the OSI Model 30 - October
THE OSI MODEL Established in 1947, the International Standards Organization (ISO) is a multinational body dedicated to worldwide agreement on international standards. An ISO standard that covers all aspects
CS-461 Internetworking. Dr. Mohamed Aboutabl
CS-461 Internetworking Dr. Mohamed Aboutabl http://www.cs.jmu.edu/users/aboutams The McGraw-Hill Companies, Inc., 2000 1 Chapter 1 Introduction The McGraw-Hill Companies, Inc., 2000 2 Internet today Network
Lecture 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
Course 6. Internetworking Routing 1/33
Course 6 Internetworking Routing 1/33 Routing The main function of the network layer is routing packets from the source machine to the destination machine. Along the way, at least one intermediate node
Different network topologies
Network Topology Network topology is the arrangement of the various elements of a communication network. It is the topological structure of a network and may be depicted physically or logically. Physical
Routing in packet-switching networks
Routing in packet-switching networks Circuit switching vs. Packet switching Most of WANs based on circuit or packet switching Circuit switching designed for voice Resources dedicated to a particular call
Chapter 15 Local Area Network Overview
Chapter 15 Local Area Network Overview LAN Topologies Bus and Tree Bus: stations attach through tap to bus full duplex allows transmission and reception transmission propagates throughout medium heard
Digital 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
William Stallings Data and Computer Communications. Chapter 10 Packet Switching
William Stallings Data and Computer Communications Chapter 10 Packet Switching Principles Circuit switching designed for voice Resources dedicated to a particular call Much of the time a data connection
Module 5 Local Area Networks
Module 5 Local Area Networks Lesson 15 LAN Topologies, Access Mechanisms And Media 5.1.1 INTRODUCTION Microelectronics brought a great revolution in computer technology. While the processing power of the
Data Communication. Chapter # 1: Introduction. By: William Stalling
Data Communication Chapter # 1: By: Introduction William Stalling Data Communication The exchange of data between two devices via some form of transmission medium such as cable wire. For data communications
Lecture 2. Computer Networks Models. Network Models 1-1
Lecture 2 Computer Networks Models Network Models 1-1 Agenda Introduction to the Internet Reference Models for Computer Networks The OSI Model The TCP/IP Model Network Models 1-2 Announcements Bonus -
Islamic University of Gaza Faculty of Engineering Department of Computer Engineering ECOM 4021: Networks Discussion. Chapter 1.
Islamic University of Gaza Faculty of Engineering Department of Computer Engineering ECOM 4021: Networks Discussion Chapter 1 Foundation Eng. Haneen El-Masry February, 2014 A Computer Network A computer
Local Area Networks and the Network Protocol Stack
Local Area Networks and the CSC362, Information Security Introduction problems inherent in transmitting packets network topologies network protocol stack Packet Switching Problems packet switching can
The OSI Model. Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO).
Network Models The OSI Model Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO). Model for understanding and developing computer-to-computer communication
Overview 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
BROADBAND AND HIGH SPEED NETWORKS
BROADBAND AND HIGH SPEED NETWORKS SWITCHING A switch is a mechanism that allows us to interconnect links to form a larger network. A switch is a multi-input, multi-output device, which transfers packets
Growth. Individual departments in a university buy LANs for their own machines and eventually want to interconnect with other campus LANs.
Internetworking Multiple networks are a fact of life: Growth. Individual departments in a university buy LANs for their own machines and eventually want to interconnect with other campus LANs. Fault isolation,
1: Review Of Semester Provide an overview of encapsulation.
1: Review Of Semester 1 1.1.1.1. Provide an overview of encapsulation. Networking evolves to support current and future applications. By dividing and organizing the networking tasks into separate layers/functions,
CS610- Computer Network Solved Subjective From Midterm Papers
Solved Subjective From Midterm Papers May 08,2012 MC100401285 Moaaz.pk@gmail.com Mc100401285@gmail.com PSMD01 CS610- Computer Network Midterm Examination - Fall 2011 1. Where are destination and source
Switching and Forwarding Reading: Chapter 3 1/30/14 1
Switching and Forwarding Reading: Chapter 3 1/30/14 1 Switching and Forwarding Next Problem: Enable communication between hosts that are not directly connected Fundamental Problem of the Internet or any
CS 455/555 Intro to Networks and Communications. Link Layer
CS 455/555 Intro to Networks and Communications Link Layer Dr. Michele Weigle Department of Computer Science Old Dominion University mweigle@cs.odu.edu http://www.cs.odu.edu/~mweigle/cs455-s13 1 Link Layer
CCNA 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
UNIT- 2 Physical Layer and Overview of PL Switching
UNIT- 2 Physical Layer and Overview of PL Switching 2.1 MULTIPLEXING Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across a single data link. Figure
Introduction to LAN Protocols
CHAPTER 2 Chapter Goals Learn about different LAN protocols. Understand the different methods used to deal with media contention. Learn about different LAN topologies. This chapter introduces the various
Packe k t e S w S it w ching
Packet Switching Jun Jie, NG 08 Oct 2011 Reference Book Chapter 3: Packet Switching What is a Switch? In the simplest terms, a switch is a mechanism that allows us to interconnect links to form a larger
CH : 15 LOCAL AREA NETWORK OVERVIEW
CH : 15 LOCAL AREA NETWORK OVERVIEW P. 447 LAN (Local Area Network) A LAN consists of a shared transmission medium and a set of hardware and software for interfacing devices to the medium and regulating
LAN Overview (part 2) Interconnecting LANs - Hubs
LAN Overview (part 2) CSE 3213 Fall 2011 1 November 2011 Interconnecting LANs - Hubs active central element of star layout each station connected to hub by two UTP lines hub acts as a repeater limited
Physical 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
Network.... communication system for connecting end- systems. End-systems a.k.a. hosts PCs, workstations dedicated computers network components
Networking 1 Network... communication system for connecting end- systems End-systems a.k.a. hosts PCs, workstations dedicated computers network components 2 Multiaccess vs.. Point-to-point Multiaccess
CARRIER SENSE MULTIPLE ACCESS (CSMA):
Lecture Handout Computer Networks Lecture No. 8 CARRIER SENSE MULTIPLE ACCESS (CSMA): There is no central control management when computers transmit on Ethernet. For this purpose the Ethernet employs CSMA
The Internet. 9.1 Introduction. The Internet is a global network that supports a variety of interpersonal and interactive multimedia applications.
The Internet 9.1 Introduction The Internet is a global network that supports a variety of interpersonal and interactive multimedia applications. Associated with each access network - ISP network, intranet,
Outline: Connecting Many Computers
Outline: Connecting Many Computers Last lecture: sending data between two computers This lecture: link-level network protocols (from last lecture) sending data among many computers 1 Review: A simple point-to-point
Reference Models. 7.3 A Comparison of the OSI and TCP/IP Reference Models
Reference Models Contains 7.1 The OSI Reference Model 7.1.1 The Physical Layer 7.1.2 The Data Link Layer 7.1.3 The Network Layer 7.1.4 The Transport Layer 7.1.5 The Session Layer 7.1.6 The Presentation
CN1047 INTRODUCTION TO COMPUTER NETWORKING CHAPTER 6 OSI MODEL TRANSPORT LAYER
CN1047 INTRODUCTION TO COMPUTER NETWORKING CHAPTER 6 OSI MODEL TRANSPORT LAYER Transport Layer The Transport layer ensures the reliable arrival of messages and provides error checking mechanisms and data
Introduction. IP Datagrams. Internet Service Paradigm. Routers and Routing Tables. Datagram Forwarding. Example Internet and Conceptual Routing Table
Introduction Datagram Forwarding Gail Hopkins Service paradigm IP datagrams Routing Encapsulation Fragmentation Reassembly Internet Service Paradigm IP Datagrams supports both connectionless and connection-oriented
UNIT III NETWORK LAYER 1. What are the network support layers and the user support layers? Network support layers: The network support layers are Physical layer, Data link layer and Network layer. These
DC Assignment III. Communication via circuit switching implies that there is a dedicated communication path between two stations.
DC Assignment III 1. Explain circuit-switched Network with neat Diagrams. Communication via circuit switching implies that there is a dedicated communication path between two stations. That path is a connected
Module 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
OSI Data Link Layer. Network Fundamentals Chapter 7. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1
OSI Data Link Layer Network Fundamentals Chapter 7 Version 4.0 1 Objectives Explain the role of Data Link layer protocols in data transmission. Describe how the Data Link layer prepares data for transmission
Computer Networks. Homework 1 Due Date June 11, 2013
Computer Networks Homework 1 Due Date June 11, 2013 Problem 1 Consider a packet-switched network of N nodes connected by the following topologies: Star: one central node (hub) and all other nodes are attached
TCP/IP and the OSI Model
TCP/IP BASICS TCP/IP and the OSI Model TCP/IP BASICS The network protocol of the Internet Composed of six main protocols IP Internet Protocol UDP User Datagram Protocol TCP Transmission Control Protocol
Lesson 1: Network Communications
Lesson 1: Network Communications This lesson introduces the basic building blocks of network communications and some of the structures used to construct data networks. There are many different kinds of
Contention Protocols and Networks
4/13/2005 314 Lecture Contention Protocols and Networks 1 Contention Protocols and Networks Contention Protocols CSMA/CD Network Topologies Ethernet 4/13/2005 314 Lecture Contention Protocols and Networks
Review of Network Technologies
Indian Institute of Technology Kharagpur Review of Network Technologies Prof. Indranil Sen Gupta Dept. of Computer Science & Engg. I.I.T. Kharagpur, INDIA Lecture 2: Review of network technologies On completion,
ECE 333: Introduction to Communication Networks Fall Lecture 1: Introduction
ECE 333: Introduction to Communication Networks Fall 2001 Lecture 1: Introduction Examples of communication networks/uses Course Goals History Classification of networks Related courses 1 Notes: This is
Text Book. 1. Computer Networks & Internets by Douglas E Comer. 2. Data and Computer Communication by William Stalling, 5th or above edition.
1 Text Book 1. Computer Networks & Internets by Douglas E Comer. 2. Data and Computer Communication by William Stalling, 5th or above edition. 2 Marks distribution Topic no First Mid 20 1,2,3 Second Mid
Reminder: Datalink Functions Computer Networking. Datalink Architectures
Reminder: Datalink Functions 15-441 15 441 15-641 Computer Networking Lecture 5 Media Access Control Peter Steenkiste Fall 2015 www.cs.cmu.edu/~prs/15-441-f15 Framing: encapsulating a network layer datagram
Goals. Fundamentals of Network Media. More topics. Topics. Multiple access communication. Multiple access solutions
Fundamentals of Network Media Local Area Networks Ursula Holmström Goals Learn the basic concepts related to LAN technologies, for example use of shared media medium access control topologies Know the
Chapter 6. The Protocol TCP/IP. Introduction to Protocols
Chapter 6 The Protocol TCP/IP 1 Introduction to Protocols A protocol is a set of rules that governs the communications between computers on a network. These rules include guidelines that regulate the following
NETWORK TOPOLOGIES. Application Notes. Keywords Topology, P2P, Bus, Ring, Star, Mesh, Tree, PON, Ethernet. Author John Peter & Timo Perttunen
Application Notes NETWORK TOPOLOGIES Author John Peter & Timo Perttunen Issued June 2014 Abstract Network topology is the way various components of a network (like nodes, links, peripherals, etc) are arranged.
TCP/IP THE TCP/IP ARCHITECTURE
TCP/IP-1 The Internet Protocol (IP) enables communications across a vast and heterogeneous collection of networks that are based on different technologies. Any host computer that is connected to the Internet
Computer Networks and Internet
Computer Networks and Internet Objectives Computer Networks Internet 2 Computer Networks Introducing Computer Networks A computer network consists of two or more computers linked together to exchange data
What is a Network? A connection of two or more computers so that they can share resources.
NETWORKS What is a Network? A connection of two or more computers so that they can share resources. Network Benefits Remote access Sharing files & resources Communication Cost Maintenance Communication
Topics. Link Layer Services (more) Link Layer Services LECTURE 5 MULTIPLE ACCESS AND LOCAL AREA NETWORKS. flow control: error detection:
1 Topics 2 LECTURE 5 MULTIPLE ACCESS AND LOCAL AREA NETWORKS Multiple access: CSMA/CD, CSMA/CA, token passing, channelization LAN: characteristics, i basic principles i Protocol architecture Topologies
Network Architecture. TOC Architecture
Network Architecture Introduction Layering Example Internet Layers First Look Layering Step by Step Downside of Layering Interconnecting Networks The Internet TOC Architecture Introduction Issues: Inter-operability
OSI and TCP/IP Models
EECS 3214 Department of Electrical Engineering & Computer Science York University 18-01-08 12:12 1 OSI and / Models 2 1 / Encapsula5on (Packet) (Frame) 3 / Model and Example Protocols A list of protocols
Chapter 10 Switching in Data Networks. School of Information Science and Engineering, Shandong University Associate Prof.
Chapter 10 Switching in Data Networks School of Information Science and Engineering, Shandong University Associate Prof., Deqiang Wang Outline Data transmission in PSTNs Switching Techniques for Data Transmission
Silberschatz and Galvin Chapter 15
Silberschatz and Galvin Chapter 15 Network Structures CPSC 410--Richard Furuta 3/30/99 1 Chapter Topics Background and motivation Network topologies Network types Communication issues Network design strategies
Internet Architecture & Performance. What s the Internet: nuts and bolts view
Internet Architecture & Performance Internet, Connection, Protocols, Performance measurements What s the Internet: nuts and bolts view millions of connected computing devices: hosts, end systems pc s workstations,
TCOM 370 NOTES 99-1 NETWORKING AND COMMUNICATIONS
TCOM 370 NOTES 99-1 NETWORKING AND COMMUNICATIONS Communication Networks Allow Exchange of Information between Users telephone network for voice communication interconnected computers and peripherals,
Test Bank for A Guide to Designing and Implementing Local And Wide Area Networks 2nd Edition by Palmer and Sinclair
Test Bank for A Guide to Designing and Implementing Local And Wide Area Networks 2nd Edition by Palmer and Sinclair Link download full: https://testbankservice.com/download/test-bank-for-aguide-to-designing-and-implementing-local-and-wide-area-networks-2ndedition-by-palmer-and-sinclair/
Subject-Computer Networks, M.Sc.(CS) - III rd
Subject-Computer Networks, M.Sc.(CS) - III rd Semester-2013 Max Marks -60 Section A Note : Attempt all questions.all questions carry equal marks 10x2=20 1. Define frequency and period. Ans: Periods refers
Lecture #6 Multiplexing and Switching
SPRING 2015 Integrated Technical Education Cluster At AlAmeeria E-626-A Data Communication and Industrial Networks (DC-IN) Lecture #6 Multiplexing and Switching Instructor: Dr. Ahmad El-Banna 1 Agenda
Computer Networks รศ.ดร.อน นต ผลเพ ม. Assoc. Prof. Anan Phonphoem, Ph.D. Kasetsart University, Bangkok, Thailand
Jan May 2018 Computer Networks รศ.ดร.อน นต ผลเพ ม Assoc. Prof. Anan Phonphoem, Ph.D. anan.p@ku.ac.th http://www.cpe.ku.ac.th/~anan Computer Engineering Department Kasetsart University, Bangkok, Thailand
ET4254 Communications and Networking 1
Topic 10:- Local Area Network Overview Aims:- LAN topologies and media LAN protocol architecture bridges, hubs, layer 2 & 3 switches 1 LAN Applications (1) personal computer LANs low cost limited data
PART X. Internetworking Part 1. (Concept, IP Addressing, IP Routing, IP Datagrams, Address Resolution)
PART X Internetworking Part 1 (Concept, IP Addressing, IP Routing, IP Datagrams, Address Resolution) CS422 Part 10 1 Spring 1999 Motivation For Internetworking LANs Low cost Limited distance WANs High
COSC 6377 Mid-Term #2 Fall 2000
Name: SSN: Signature: Open book, open notes. Your work must be your own. Assigned seating. Test time: 7:05pm to 8:05pm. You may not use a calculator or PalmPilot to calculate subnetting/host/netid information.
CHAPTER -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
Link Layer and Ethernet
Link Layer and Ethernet 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross traceroute Data Link Layer Multiple
UNIT 1. Advantages of Computer Networks
UNIT 1 COMPUTER NETWORKS :- A Network is a set of devices or nodes connected by media links.a node can be a computer, printer,scanner,voip phone etc.computer network means an interconnected collection
Part VI. Appendixes. Appendix A OSI Model and Internet Protocols Appendix B About the CD
Part VI Appendixes Appendix A OSI Model and Internet Protocols Appendix B About the CD OSI Model and Internet Protocols APPENDIX A In this appendix, you will Learn about the OSI model Review the network
OSI Network Layer. Chapter 5
OSI Network Layer Network Fundamentals Chapter 5 Objectives Identify the role of the Network Layer, as it describes communication from one end device to another end device. Examine the most common Network
Computer 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
Chapter 11 in Stallings 10 th Edition
Local Area Network Overview Chapter 11 in Stallings 10 th Edition CS420/520 Axel Krings Page 1 LAN Applications (1) Personal computer LANs Low cost Limited data rate Back end networks Interconnecting large
The Link Layer and LANs. Chapter 6: Link layer and LANs
The Link Layer and LANs EECS3214 2018-03-14 4-1 Chapter 6: Link layer and LANs our goals: understand principles behind link layer services: error detection, correction sharing a broadcast channel: multiple
FDDI by default supports Early Token Release. Below is the operation of FDDI ring.
Lecture 9 Fault Tolerance FDDI is also built for fault tolerance. It is actually two networks, one going counter-clockwise and the other clockwise (as usually drawn). Normally only the primary links, i.e.
Introduction to Networks and the Internet
Introduction to Networks and the Internet CMPE 80N Winter 2004 Lecture 18 Announcements Fourth quiz on Monday, March 1 st. Third HTML discussion session today by Kiran (before class). Summary posted on
CS 43: Computer Networks Switches and LANs. Kevin Webb Swarthmore College December 5, 2017
CS 43: Computer Networks Switches and LANs Kevin Webb Swarthmore College December 5, 2017 Ethernet Metcalfe s Ethernet sketch Dominant wired LAN technology: cheap $20 for NIC first widely used LAN technology
Network Models. Behrouz A. Forouzan Data communication and Networking Fourth edition
Chapter 2 Network Models Behrouz A. Forouzan Data communication and Networking Fourth edition 1 Layered Tasks We use the concept of layers in our daily life. As an example, let us consider two friends
COMPUTER NETWORKS - Local area networks
Local area networks Telecommunication Networks Group firstname.lastname@polito.it http://www.telematica.polito.it/ COMPUTER NETWORKS LANs - 1 Copyright Quest opera è protetta dalla licenza Creative Commons
Local area networks. Copyright
Local area networks Telecommunication Networks Group firstname.lastname@polito.it http://www.telematica.polito.it/ COMPUTER NETWORKS LANs - 1 Copyright Quest opera è protetta dalla licenza Creative Commons
Defining Networks with the OSI Model. Module 2
Defining Networks with the OSI Model Module 2 Objectives Skills Concepts Objective Domain Description Objective Domain Number Understanding OSI Basics Defining the Communications Subnetwork Defining the
Adaptors Communicating. Link Layer: Introduction. Parity Checking. Error Detection. Multiple Access Links and Protocols
Link Layer: Introduction daptors ommunicating hosts and routers are nodes links connect nodes wired links wireless links layer-2 packet is a frame, encapsulates datagram datagram controller sending host
Networks 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
Introduction to Internetworking
Introduction to Internetworking Introductory terms Communications Network Facility that provides data transfer services An internet Collection of communications networks interconnected by bridges and/or
A closer look at network structure:
T1: Introduction 1.1 What is computer network? Examples of computer network The Internet Network structure: edge and core 1.2 Why computer networks 1.3 The way networks work 1.4 Performance metrics: Delay,
Module 15: Network Structures
Module 15: Network Structures Background Motivation Topology Network Types Communication Design Strategies 15.1 Node Types Mainframes (IBM3090, etc.) example applications: airline reservations banking
Chapter 6: Network Communications and Protocols
Learning Objectives Chapter 6: Network Communications and Protocols Understand the function and structure of packets in a network, and analyze and understand those packets Understand the function of protocols
COMPUTER NETWORKS MODEL QUESTION PAPER WITH SOLUTION. (c) Peer-to-peer processes are processes on two or more devices communicating at a
COMPUTER NETWORKS MODEL QUESTION PAPER WITH SOLUTION Q-1(a) In half-duplex transmission, only one entity can send at a time; in a full-duplex transmission, both entities can send at the same time. (b)