Packet Switching, Layer Models and Protocol Suites
|
|
- Victor Alexander Baker
- 6 years ago
- Views:
Transcription
1 Packet Switching, Layer Models and Protocol Suites Course Code CCE 211 Course Title Data Communication Asst. Prof. Md Samsuzzaman, Ph.D. Computer and Communication Engineering Department 1PSTU
2 Outline Circuit vs. packet switching Layered tasks Internet protocol suites ISO's OSI model 2
3 End-to-End Communication Direct communication Most basic form of communication TX RX TX RX GND GND Serial Port Internet communication Communication is performed over the Internet Internet 3
4 Internet Comm. - App's Viewpoint Two network applications should interact as if they were directly connected App write read App A Internet B But what's going on underneath? What is inside the "cloud"? 4
5 Circuit vs. Packet Switching Dedicated circuits Circuit switching Telephone switches establish circuits for communication Packet switching Data are put into packets Each stamped with source and destination addresses Routers know where to forward packets telephone switch Packet Router 6
6 Layered Tasks Computer networks are complex systems Tasks involve varieties of hardware and software components, and protocols Networking task is divided into several subtasks, or layers 7
7 Figure 2.1: A single-layer protocol 2.8
8 Figure 2.2: A three-layer protocol Postal carrier facility 2.9
9 2.1.2 Principles of Protocol Layering Let us discuss two principles of protocol layering. The first principle dictates that if we want bidirectional communication, we need to make each layer so that it is able to perform two opposite tasks, one in each direction. The second principle that we need to follow in protocol layering is that the two objects under each layer at both sites should be identical. 2.10
10 2.1.3 Logical Connections After following the above two principles, we can think about logical connection between each layer as shown in Figure 2.3. This means that we have layer-to-layer communication. Maria and Ann can think that there is a logical (imaginary) connection at each layer through which they can send the object created from that layer. We will see that the concept of logical connection will help us better understand the task of layering we encounter in data communication and networking. 2.11
11 Figure 2.3: Logical connection between peer layers 2.12
12 Real World Example Communication between managers of two companies Communicate 13
13 What Actually Happens Communication takes place thru many layers Logical communication Secretary: types a letter Secretary: reads and reports the message Delivery boy: drops the letter Delivery boy: takes the letter Postal truck Post office: Processes and routes the letter 14
14 Figure 2.5: Communication through an internet 2.17
15 Internet Layer Model The Internet Protocol Stack User Application Layer Transport Layer Network Layer Data Link Layer Physical Layer Software Hardware Transmission Medium 18
16 Application Layer Responsible for providing services to the user The only layer to interact with user Data Logical communication Data Application Layer SMTP HTTP FTP SMTP HTTP FTP Data H5 Data H5 to Transport from Transport 19
17 Transport Layer Responsible for delivery of a message from one process to another Duties/services Port addressing Segmentation and reassembly Connection control Flow control (end-to-end) Error control (end-to-end) 20
18 Transport Layer Process Process Process Process PORT # PORT # Data Data Transport Layer Data 1 H4 Data 2 H4 Data 3 H4 (segments) Data 1 H4 Data 2 H4 Data 3 H4 to Network from Network 21
19 Network Layer Responsible for the delivery of packets from the original source to the destination Duties/services Logical addressing Routing 22
20 Network Layer from Transport to Transport Data Data Network Layer Data H3 Data H3 (packet) to Data Link from Data Link 23
21 Network Layer Data Network 1 1.1, 1.2, 6.1, 5.7,... are logical addresses R1 6.1 Network R2 Router Network 3 R Network 5 24
22 Duties/services Framing Data Link Layer Responsible for transmitting frames from one node to the next Physical addressing Flow control (hop-to-hop) Error control (hop-to-hop) Access control 25
23 Data Link Layer from Network to Network Data Data Data Link Layer T2 Data H2 T2 Data H2 (frame) to Physical from Physical 26
24 Data Link Layer A3, 3B, 82, 9F,... are physical addresses Data 9F 3B 82 A3 T2 Data 9F A3 H2 27
25 Data Link Layer Data Network 1 Data R Data Network 6 R Network R Data Network 5 28
26 Physical Layer Responsible for transmitting individual bits from one node to the next Duties/services Physical characteristics of interfaces and media Representation of bits Data rate (transmission rate) Synchronization of bits 29
27 Physical Layer from Data Link to Data Link Data Data Physical Layer (bits) Transmission medium 30
28 The Big Picture L5 data H5 5 5 L5 data H5 L4 data H4 4 4 L4 data H4 L3 data H3 3 3 L3 data H3 T2 L2 data H2 2 2 T2 L2 data H Transmission medium 31
29 Internet Model sender router router receiver Application Application Transport Transport Network Network Network Network Data Link D.L. D.L. D.L. D.L. Data Link Physical P.L. P.L. P.L. P.L. Physical Transmission medium 32
30 Internet Model 33
31 Protocol Suites A set of protocols must be constructed to ensure that the resulting communication system is complete and efficient Each protocol should handle a part of communication not handled by other protocols How can we guarantee that protocols work well together? Instead of creating each protocol in isolation, protocols are designed in complete, cooperative sets called suites or families 34 34
32 Internet Protocol Suite Layer Protocols Application HTTP, FTP, Telnet, SMTP,... Transport TCP, UDP, SCTP,... Network IP (IPv4), IPv6, ICMP, IGMP,... Data Link Ethernet, Wi-Fi, PPP,... Physical RS-232, DSL, 10Base-T,... 35
33 OSI Model User 7.Application Layer 6.Presentation Layer 5.Session Layer OSI Open Systems Interconnection Developed by the International Standards Organizations (ISO) 4.Transport Layer 3.Network Layer 2.Data Link Layer 1.Physical Layer Two additional layers Presentation layer Session layer Transmission Medium 36
34 Session Layer Responsible for establishing, managing and terminating connections between applications Duties/services Interaction management Simplex, half-duplex, full-duplex Session recovery 37
35 Presentation Layer Responsible for handling differences in data representation to applications Duties/services Data translation Encryption Decryption Compression 38
Chapter 2 Network Models 2.1
Chapter 2 Network Models 2.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 2-1 LAYERED TASKS We use the concept of layers in our daily life. As an example,
More informationChapter 2 Network Models 2.1
Chapter 2 Network Models 2.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Network Models n Network Architecture: n A) Hardware: at the core of any network;
More informationThe 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
More informationData and Computer Communications. Chapter 2 Protocol Architecture, TCP/IP, and Internet-Based Applications
Data and Computer Communications Chapter 2 Protocol Architecture, TCP/IP, and Internet-Based s 1 Need For Protocol Architecture data exchange can involve complex procedures better if task broken into subtasks
More informationNetwork 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
More informationES623 Networked Embedded Systems
ES623 Networked Embedded Systems Introduction to Network models & Data Communication 16 th April 2013 OSI Models An ISO standard that covers all aspects of network communication is the Open Systems Interconnection
More informationChapter 3 Protocols and the TCP/IP Suite
Chapter 3 Protocols and the TCP/IP Suite 3.1 The Need for a Protocol Architecture need for a standard communication tasks by layers architecture peer protocol: a set of rules or conventions to exchange
More informationE&CE 358: Tutorial 1. Instructor: Sherman (Xuemin) Shen TA: Miao Wang
E&CE 358: Tutorial 1 Instructor: Sherman (Xuemin) Shen TA: Miao Wang Email: m59wang@uwaterloo.ca 1 About Tutorials TA: Miao Wang Office: EIT 3133; Tutorials: Th 4:30 5:20 pm Topics Supplementary knowledge
More informationChapter 2 Network Models 2.1
Chapter 2 Network Models 2.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 2.2 2-1 LAYERED TASKS We use the concept of layers in our daily life. As an example,
More informationNeed For Protocol Architecture
Chapter 2 CS420/520 Axel Krings Page 1 Need For Protocol Architecture E.g. File transfer Source must activate communications path or inform network of destination Source must check destination is prepared
More informationNeed For Protocol Architecture
Chapter 2 CS420/520 Axel Krings Page 1 Need For Protocol Architecture E.g. File transfer Source must activate communications path or inform network of destination Source must check destination is prepared
More informationNetwork Models. Presentation by Dr.S.Radha HOD / ECE SSN College of Engineering
Network Models Presentation by Dr.S.Radha HOD / ECE SSN College of Engineering Objective At the end of this section students will be able to Understand the architecture of the OSI model Understand the
More informationOSI Model. Teran Subasinghe MBCS, Bsc.(Hons) in Computer Science - University of Greenwich, UK
OSI Model Teran Subasinghe MBCS, Bsc.(Hons) in Computer Science - University of Greenwich, UK What is OSI Model? Open Systems Interconnection Reference Model Developed in 1984 by the International Standards
More informationMEBS Utilities services M.Sc.(Eng) in building services Faculty of Engineering University of Hong Kong
Open System Interconnection MEBS 6000 2010 Utilities services ISO 1984: ISO Standard 7498 Information Processing System Open System Interconnection Basic Reference Model OSI is itself not a standard, but
More informationData and Computer Communications
Data and Computer Communications Chapter 2 Protocol Architecture, TCP/IP, and Internet-Based Applications Eighth Edition by William Stallings Chap2: 1 Need For Protocol Architecture data exchange can involve
More informationChapter 12 Network Protocols
Chapter 12 Network Protocols 1 Outline Protocol: Set of defined rules to allow communication between entities Open Systems Interconnection (OSI) Transmission Control Protocol/Internetworking Protocol (TCP/IP)
More informationNetworking Applications
Networking Dr. Ayman A. Abdel-Hamid College of Computing and Information Technology Arab Academy for Science & Technology and Maritime Transport 1 Outline Internet Layers Internet Data Packet transmission
More informationITEC 3800 Data Communication and Network. Introducing Networks
ITEC 3800 Data Communication and Network Introducing Networks Introduction to Networking Computer network, or simply network Refers to the connection of two or more computers by some type of medium You
More informationData Communication and Network. Introducing Networks
Data Communication and Network Introducing Networks Introduction to Networking Computer network, or simply network Refers to the connection of two or more computers by some type of medium You can connect
More informationThe Client Server Model and Software Design
The Client Server Model and Software Design Prof. Chuan-Ming Liu Computer Science and Information Engineering National Taipei University of Technology Taipei, TAIWAN MCSE Lab, NTUT, TAIWAN 1 Introduction
More informationChapter -4 OSI Reference Model
Chapter -4 OSI Reference Model Objectives Concept of Reference Model. OSI Reference Model Concept. Layers of OSI Reference Model. 4.1 Introduction Layered Architecture, Peer-to- Peer Processes, Interfaces
More informationTCP/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
More informationOperating Systems. 16. Networking. Paul Krzyzanowski. Rutgers University. Spring /6/ Paul Krzyzanowski
Operating Systems 16. Networking Paul Krzyzanowski Rutgers University Spring 2015 1 Local Area Network (LAN) LAN = communications network Small area (building, set of buildings) Same, sometimes shared,
More informationSystem Programming. Introduction to computer networks
Content : by Dr. B. Boufama School of Computer Science University of Windsor Instructor: Dr. A. Habed adlane@cs.uwindsor.ca http://cs.uwindsor.ca/ adlane/60-256 Content Content 1 Introduction to Computer
More informationLayering in Networked computing. OSI Model TCP/IP Model Protocols at each layer
Layering in Networked computing OSI Model TCP/IP Model Protocols at each layer Learning outcomes Understand the need of layering in Networked computing Understand the OSI model and the tcp/ip model Understand
More informationCS-435 spring semester Network Technology & Programming Laboratory. Stefanos Papadakis & Manolis Spanakis
CS-435 spring semester 206 Network Technology & Programming Laboratory University of Crete Computer Science Department Stefanos Papadakis & Manolis Spanakis CS-435 Lecture #2 preview: Data Communications
More informationNetwork Architecture Models
School of Business Eastern Illinois University Network Architecture Models (September 8, 2009) Abdou Illia, Fall 2009 Learning Objectives 2 Discuss the OSI reference Model Discuss the Internet Model Compare
More informationLayered Architecture
CS311: DATA COMMUNICATION Layered Architecture by Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Jodhpur E-mail: manaskhatua@iitj.ac.in Web: http://home.iitj.ac.in/~manaskhatua http://manaskhatua.github.io/
More informationPeer entities. Protocol Layering. Protocols. Example
Peer entities Protocol Layering An Engineering Approach to Computer Networking Customer A and B are peers Postal worker A and B are peers Protocols A protocol is a set of rules and formats that govern
More informationb) Diverse forms of physical connection - all sorts of wired connections, wireless connections, fiber optics, etc.
Objectives CPS221 Lecture: Layered Network Architecture last revised 6/22/10 1. To discuss the OSI layered architecture model 2. To discuss the specific implementation of this model in TCP/IP Materials:
More informationCS3600 SYSTEMS AND NETWORKS
CS3600 SYSTEMS AND NETWORKS NORTHEASTERN UNIVERSITY Lecture 17: Internet architecture Prof. Alan Mislove (amislove@ccs.neu.edu) Slides used with permissions from Edward W. Knightly, T. S. Eugene Ng, Ion
More informationCPS221 Lecture: Layered Network Architecture
CPS221 Lecture: Layered Network Architecture Objectives last revised 9/8/14 1. To discuss the OSI layered architecture model 2. To discuss the specific implementation of this model in TCP/IP Materials:
More informationTCP/IP protocol suite
TCP/IP protocol suite The TCP/IP protocol suite was developed prior to the OSI model. Therefore, the layers in the TCP/IP protocol suite do not match exactly with those in the OSI model. The original TCP/IP
More informationSUBJECT: DATA COMMUNICATION AND NETWORK SEMESTER: V SEMESTER COURSE: BCA SUBJECT TEACHER: Dr.K.Chitra Assistant Professor, Department of Computer
SUBJECT: DATA COMMUNICATION AND NETWORK SEMESTER: V SEMESTER COURSE: BCA SUBJECT TEACHER: Dr.K.Chitra Assistant Professor, Department of Computer Science Chapter - 2 Switching and Network Architecture
More informationISO/OSI Model and Collision Domain NETWORK INFRASTRUCTURES NETKIT - LECTURE 1 MANUEL CAMPO, MARCO SPAZIANI
ISO/OSI Model and Collision Domain NETWORK INFRASTRUCTURES NETKIT - LECTURE 1 MANUEL CAMPO, MARCO SPAZIANI ISO/OSI Model ISO: International Organization for Standardization OSI: Open Systems Interconnection
More informationIntroduction and Layered Network Architecture. EEE 538 Dr. Nail Akar Bilkent University Electrical and Electronics Engineering Department
Introduction and Layered Network Architecture EEE 538 Dr. Nail Akar Bilkent University Electrical and Electronics Engineering Department 1 Fundamental Aspects of Network Analysis Architecture Layering
More informationNetwork Reference Models
Network Reference Models LECTURE (2) Network Reference Models A framework (guideline) for network implementation and troubleshooting. Divides complex functions into simpler components. Importance of reference
More informationChapter 2 Network Models
Computer Networks Al-Mustansiryah University Elec. Eng. Department College of Engineering Fourth Year Class Chapter 2 Network Models 2.1 2-1 LAYERED TASKS We use the concept of layers in our daily life.
More informationIntroduction to computer networking
edge core Introduction to computer networking Comp Sci 3600 Security Outline edge core 1 2 edge 3 core 4 5 6 The edge core Outline edge core 1 2 edge 3 core 4 5 6 edge core Billions of connected computing
More informationChapter 2 - Part 1. The TCP/IP Protocol: The Language of the Internet
Chapter 2 - Part 1 The TCP/IP Protocol: The Language of the Internet Protocols A protocol is a language or set of rules that two or more computers use to communicate 2 Protocol Analogy: Phone Call Parties
More informationCPEG514 Advanced Computer Networks. Atef Abu Salim University of Nizwa Spring 2013/2014
CPEG514 Advanced Computer Networks Atef Abu Salim University of Nizwa Spring 2013/2014 Today s Class Topics Course Syllabus Computer Networks LANs and WANs The Internet Protocols, Layers and Interfaces
More informationThe OSI Model and the TCP/IP Protocol Suite Outline: 1. Protocol Layers 2. OSI Model 3. TCP/IP Model 4. Addressing
The OSI Model and the TCP/IP Protocol Suite Outline: 1. Protocol Layers 2. OSI Model 3. TCP/IP Model 4. Addressing OBJECTIVES To discuss the OSI model and its layer architecture and to show the interface
More informationBLM6196 COMPUTER NETWORKS AND COMMUNICATION PROTOCOLS
BLM6196 COMPUTER NETWORKS AND COMMUNICATION PROTOCOLS Prof. Dr. Hasan Hüseyin BALIK (2 nd Week) 2. Protocol Architecture, TCP/IP, and Internet-Based Applications 2.Outline The Need for a Protocol Architecture
More informationChapter 09 Network Protocols
Chapter 09 Network Protocols Copyright 2011, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved. 1 Outline Protocol: Set of defined rules to allow communication between entities Open Systems
More informationChapter 1. Computer Networks and the Internet
Chapter 1 Computer Networks and the Internet Internet traffic What s the Internet? (hardware) PC server wireless laptop cellular handheld wired links millions of connected computing devices: hosts = end
More informationComputer Communication & Networks / Data Communication & Computer Networks Week # 03
Computer Communication & Networks / Data Communication & Computer Networks Week # 03 M.Nadeem Akhtar CS & IT Department The University of Lahore Email: nadeem.akhtar@cs.uol.edu.pk URL-https://sites.google.com/site/nadeemuolcsccn/home
More informationRead addressing table and network map
Term 1 Grade 12 -Task Sheet 4 Name: SIS No Group: N/A (Not Applicable) Signed Date: Grade Start Time: Finishing Time: Read addressing table and network map Picture 1 Picture 2 OBJECTIVE Read addressing
More informationLecture 2: Internet Architecture
CS 3700 Networks and Distributed Systems Lecture 2: Internet Architecture Revised 1/6/14 Organizing Network Functionality 2 Organizing Network Functionality 2 Networks are built from many components! Networking
More informationLecture 17 Overview. Last Lecture. Wide Area Networking (2) This Lecture. Internet Protocol (1) Source: chapters 2.2, 2.3,18.4, 19.1, 9.
Lecture 17 Overview Last Lecture Wide Area Networking (2) This Lecture Internet Protocol (1) Source: chapters 2.2, 2.3,18.4, 19.1, 9.2 Next Lecture Internet Protocol (2) Source: chapters 19.1, 19.2, 22,1
More informationCOMPONENTS OF DATA COMMUNICATION
COMPONENTS OF DATA COMMUNICATION ANALOG AND DIGITAL TRANSMISSION An analog signal is one that is continuous with respect to time and may take on any value within a given range of values. Eg Human voice.
More informationCS4700/CS5700 Fundaments of Computer Networks
CS4700/CS5700 Fundaments of Computer Networks Lecture 5: Internet architecture Slides used with permissions from Edward W. Knightly, T. S. Eugene Ng, Ion Stoica, Hui Zhang Alan Mislove amislove at ccs.neu.edu
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 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 informationprecise rules that govern communication between two parties TCP/IP: the basic Internet protocols IP: Internet protocol (bottom level)
Protocols precise rules that govern communication between two parties TCP/IP: the basic Internet protocols IP: Internet protocol (bottom level) all packets shipped from network to network as IP packets
More informationIntroduction to Open System Interconnection Reference Model
Chapter 5 Introduction to OSI Reference Model 1 Chapter 5 Introduction to Open System Interconnection Reference Model Introduction The Open Systems Interconnection (OSI) model is a reference tool for understanding
More informationNetwork Review TEJ4M. SBrace
Network Review TEJ4M SBrace Example of how the OSI Layers work using an e-mail sent from the computer on the left. Email sent from John: Meet me at Carl s 1:30 John Identify sender and intended receiver;
More informationModule 2 Overview of Computer Networks
Module 2 Overview of Computer Networks Networks and Communication Give me names of all employees Who earn more than $00,000 ISP intranet backbone satellite link desktop computer: server: network link:
More informationComputer Networks 1DV201
Computer Networks 1DV201 1 Link to coursepage http://w3.msi.vxu.se/users/ofl/1dv201/index.html 2 Chapter 1-3 Introduction 3 Topic and Scope Computer networks and internets: an overview of concepts, terminology,
More informationModule 2 Overview of. Computer Networks
Module Overview of Networks and Communication Give me names of all employees Who earn more than $00,000 ISP intranet backbone satellite link desktop computer: server: network link: CS454/654 - Issues How
More informationChapter 7. Local Area Network Communications Protocols
Chapter 7 Local Area Network Communications Protocols The Network Layer The third layer of the OSI Model is the network layer. The network layer is concerned with providing a means for hosts to communicate
More informationCCNA Exploration Network Fundamentals. Chapter 3 Application Layer Functionality and Protocols
CCNA Exploration Network Fundamentals Chapter 3 Application Layer Functionality and Protocols Application Layer Functionality and Protocols Applications: The Interface Between the Networks Horny/Coufal
More informationCommunication Fundamentals in Computer Networks
Lecture 11 Communication Fundamentals in Computer Networks M. Adnan Quaium Assistant Professor Department of Electrical and Electronic Engineering Ahsanullah University of Science and Technology Room 4A07
More informationThe 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
More informationECE 4400:427/527 - Computer Networks Spring 2017
ECE 4400:427/527 - Computer Networks Spring 2017 Dr. Nghi Tran Department of Electrical & Computer Engineering Lecture 3: Network Architectures Dr. Nghi Tran (ECE-University of Akron) ECE 4400:427/527
More informationDefining 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
More informationData & Computer Communication
Basic Networking Concepts A network is a system of computers and other devices (such as printers and modems) that are connected in such a way that they can exchange data. A bridge is a device that connects
More informationCisco Cisco Certified Network Associate (CCNA)
Cisco 200-125 Cisco Certified Network Associate (CCNA) http://killexams.com/pass4sure/exam-detail/200-125 Question: 769 Refer to exhibit: Which destination addresses will be used by Host A to send data
More informationCOMP750. Distributed Systems. Network Overview
COMP750 Distributed Systems Network Overview Network Standards The purpose of a network is to allow two computers to communicate. Ex: The electrical power network in North America follows a standard to
More informationFundamentals of Networking. OSI & TCP/IP Model. Kuldeep Sonar 1
Fundamentals of Networking OSI & TCP/IP Model Kuldeep Sonar 1 Kuldeep Sonar 2 OSI Model Kuldeep Sonar 3 Application Layer Layer 7 provides an interface between a host s communication software and any necessary
More informationIntroduction to Protocols
Chapter 6 Introduction to Protocols 1 Chapter 6 Introduction to Protocols What is a Network Protocol? A protocol is a set of rules that governs the communications between computers on a network. These
More informationCS1302 / Computer Networks
CS1302 / Computer Networks Year/Sem : III/VI UNIT I- DATA COMMUNICATIONS 1. Define Data communication 2. List out the characteristics of data communication 3. What are the components of data communication?
More informationComputer Networks (Introduction to TCP/IP Protocols)
Network Security(CP33925) Computer Networks (Introduction to TCP/IP Protocols) 부산대학교공과대학정보컴퓨터공학부 Network Type Elements of Protocol OSI Reference Model OSI Layers What we ll learn today 2 Definition of
More informationSwitching Networks (Fall 2010) EE 586 Communication and. August 27, Lecture 2. (modified by Cheung for EE586; based on K&R original) 1-1
EE 586 Communication and Switching Networks (Fall 2010) Lecture 2 August 27, 2010 (modified by Cheung for EE586; based on K&R original) 1-1 Announcements Read Chapter 1 First homework is due 9/3 In Blackboard
More informationInternet Routing. Review of Networking Principles. What s the Internet: nuts and bolts view. Communication links
Internet Routing Review of Networking Principles 1 What s the Internet: nuts and bolts view Millions of connected computing devices: hosts, end-systems PC s workstations, servers PDA s, phones, toasters
More informationInternet Routing. Review of Networking Principles
Internet Routing Review of Networking Principles 1 What s the Internet: nuts and bolts view Millions of connected computing devices: hosts, end-systems PC s workstations, servers PDA s, phones, toasters
More informationCommunication Networks
Session 2. Application and Layered Architectures Dongsoo S. Kim Electrical and Computer Engineering. Indiana U. Purdue U. Indianapolis Communication s Various services and flexibility architectures Grouping
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 informationReview. Review. Review. How to Send a Message over a Network? LAN LAN. LAN Routing Addressing Reliable Data Transfer Congestion Control LAN
Review Review Computer etworks Multiaccess or Shared Media Broadcast Switched Point-to-Point Packet Switched or Store-and-foward Circuit Switched Virtual Ciruit or Connection-Oriented Datagram or Connectionless
More informationTime : 3 hours. Full Marks: 70. The figures in the margin indicate full marks. Answer from all the Groups are directed. Group A.
COPYRIGHT RESERVED End Sem (III) MCA (XVIII) 2017 Time : 3 hours Full Marks: 70 Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate
More informationLecture-4. TCP/IP-Overview:
Lecture-4 TCP/IP-Overview: The history goes back to ARPANET a research network sponsored by DoD US Govt. It eventually connected hundreds of universities and govt installations, using leased telephone
More informationRevision 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
More informationConcept Questions Demonstrate your knowledge of these concepts by answering the following questions in the space that is provided.
223 Chapter 19 Inter mediate TCP The Transmission Control Protocol/Internet Protocol (TCP/IP) suite of protocols was developed as part of the research that the Defense Advanced Research Projects Agency
More informationArea Covered is small Area covered is large. Data transfer rate is high Data transfer rate is low
Chapter 15 Networking Concepts 1. Define networking. It is the interconnection of independent computing devices for sharing of information over shared medium. 2. What is the need for networking? / What
More informationInternetworking Models The OSI Reference Model
Internetworking Models When networks first came into being, computers could typically communicate only with computers from the same manufacturer. In the late 1970s, the Open Systems Interconnection (OSI)
More informationOutline. Inter-Process Communication. IPC across machines: Problems. CSCI 4061 Introduction to Operating Systems
Outline CSCI 4061 Introduction to Operating Systems ing Overview Layering and Protocols TCP/IP Protocol Family Client-Server Model Instructor: Abhishek Chandra 2 Inter-Process Communication Intra-node:
More informationOperating Systems and. Computer Networks. Introduction to Computer Networks. Operating Systems and
Computer Networks Introduction to Computer Networks Linux System Structure Corbet et al, Linux Device Drivers, O Reilly, 2005 Categories of System Calls Process Control load, execute, end, abort, create
More informationECE4110 Internetwork Programming. Introduction and Overview
ECE4110 Internetwork Programming Introduction and Overview 1 EXAMPLE GENERAL NETWORK ALGORITHM Listen to wire Are signals detected Detect a preamble Yes Read Destination Address No data carrying or noise?
More informationReview of Important Networking Concepts
Review of Important Networking Concepts Review: ed communication architecture The TCP/IP protocol suite 1 Networking Concepts Protocol Architecture Protocol s Encapsulation Network Abstractions 2 1 Sending
More informationComputer Networks with Internet Technology William Stallings. Chapter 2 Protocols and the TCP/IP Protocol Suite
Computer Networks with Internet Technology William Stallings Chapter 2 Protocols and the TCP/IP Protocol Suite Need For Protocol Architecture E.g. File transfer Source must activate comms. Path or inform
More informationa. the physical layer, b. and the data-link layer. a. three physical layers, b. three data-link layers, c. and only one network layer.
CHAPTER PRACTICE SET Questions Q-. Q-. To make the communication bidirectional, each layer needs to be able to provide two opposite tasks, one in each direction. The link-layer switch is normally involved
More informationCS4700/5700: Network fundamentals
Cristina Nita-Rotaru CS4700/5700: Network fundamentals. 1: Organizing network functionality } Networks are built from many components } Networking technologies } Ethernet, Wifi, Bluetooth, Fiber Optic,
More informationParts of a Network. app. router. link. host. Computer Networks 2
Network Components Parts of a Network app host router link Computer Networks 2 Parts of a Network app host router link Computer Networks 3 Component Names Component Function Example Application, or app,
More informationELC 537 Communication Networks
Modern Academy for Engineering and Technology Electronics Engineering and Communication Technology Dpt. ELC 537 Communication Networks Prepared by: Dr. Nelly Muhammad Hussein Sections & Objectives Principles
More informationOperating Systems CS 571
Computer Networks: Overview Operating Systems CS 571 Network types Range Bandwidth (Mbps) Latency (ms) LAN 1-2 kms 10-1000 1-10 WAN worldwide 0.010-600 100-500 MAN 2-50 kms 1-150 10 Wireless LAN 0.15-1.5
More informationChapter 2 Layer Architecture of Network Protocols. School of Info. Sci. & Eng. Shandong Univ.
Chapter 2 Architecture of Network Protocols School of Info. Sci. & Eng. Shandong Univ. Outline 2.1 Examples of ing 2.2 OSI Reference Model (Continued from last time) 2.3. TCP/IP Architecture 2.4 Berkeley
More informationEEC-484/584 Computer Networks
EEC-484/584 Computer Networks Lecture 2 Wenbing Zhao wenbing@ieee.org (Lecture nodes are based on materials supplied by Dr. Louise Moser at UCSB and Prentice-Hall) Misc. Interested in research? Secure
More informationCopyleft 2005, Binnur Kurt. Objectives
1 ing Fundamentals Copyleft 2005, Binnur Kurt Objectives Define basic networking terms Describe some commonly used network applications Describe the main purposes and functions of computer networking Describe
More informationCS-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
More informationInternet 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,
More informationinfrared Disadvantage: 1. cannot use for long-range communication or outside a building due to sun s rays.
Chapter2: analog and digital signals can take one of two forms: 1. periodic 2. nonperiodic Periodic analog signals can be classified as: 1. simple 2. composite A sine wave is represented by three parameters:
More information