Internet, Education, and Collaboration of USP. Kazunori Sugiura Sept 9 th 2002
|
|
- Gerald Lane
- 6 years ago
- Views:
Transcription
1 Internet, Education, and Collaboration of USP Kazunori Sugiura Sept 9 th 2002
2 Last lecture in USP Importance of better internet connectivity What kind of problem do we have Discuss Solution Look ahead
3 The reason I like USP Has a good network infrastructure backgrounds Mixture of countries, cultures Thinking globally I like students here I love the environments Tropical Good food good fruits Kava But I think some thing should be done to a network!
4 Q. What do you think is a problem with network infrastructure in USP?
5 Importance of Better Internet Connectivity Base infrastructure of Knowledge Communication Relationship Dissertation
6 Why it works? Reliability Better communication reliability Robustness Autonomous, Distributed, Collaborated Scalability Best Effort Layering Model End to End Model Congestion Management
7 Network design What is it for? What kind of network are we thinking? Education, Research, communication, and Management Distance education capability How big is it? USP has 12 cooperated countries How much money we can spare? Who is going to manage it? USP How about expandability? Let s look ahead for 5 years?
8 Local Communications Intranet usability BBS, s webtc, internal web, Sharing files Sharing printers Global communication Global communications Distance education infrastructure Mails to the Internet Access to web resource VoIP Extranet E-commerce
9 Scale How many computers are we connecting to the networks? Cabling How much cables do we need Hubs, switches What should we do with dumb Hubs? Using switches Addressing IP address Sub networks DHCP, NAT, Security NAT, Firewalls Power supply issues
10 Goals? For Intranet (Campus LANs) High bandwidth video conference DVTS MPEG2TS For inter island and internet connection Better quality of video conference to USP over IP Enabling videos and audio over the internet Powers USP to main routers, switches
11 Ways of communications
12 Ways of connecting networks Star Ring Bus Tree Mesh
13 Uni-cast communications Network Talking personally
14 Multicast Network Talking to group of people
15 Broadcast Network Talk to all the people
16 Circuit Exchange ex. Analog telephone Talk to each other with circuits (virtual circuits). Exclusive dedicated line.
17 Packet exchange (Internet) Send chunks of data (packets) in shared networks Shares same pipes, when its not crowded, its smooth When crowded, may be jammed
18 Next Generation USPNet Fast, Reliable networks Fault redundancy Multiple homing Distance education awareness New Technology
19 What is the bandwidth? Which road is faster and has capacity?
20 Bandwidth More lanes, more cars. 100 cars in one lane = traffic jams 100 cars in 4 lanes = no problem Bandwidth = traffic lanes Traffic jams are called congestion
21 Congestion Internet connection of USP USP 512K Internet Connection
22 Congestion mechanism Gateway / Router Drop
23 End application based packet shaping (Avoiding burst traffic) Application End application Large packet buffer pool
24 Jitter caused by priority mismatch Application Sender host Audio packet Video packet Waiting for audio packet
25 Separation of packet Application Sender host Audio queue Audio Packet Video packet Video queue Priority audio packet
26 TCP+UDP Traffic TCP sender packets TCP packet UDP packet congestion UDP sender packets
27 TCP+UDP Traffic TCP sender packets TCP packet UDP packet congestion UDP sender packets
28 TCP+UDP Traffic TCP sender packets Decrease packets to avoid congestion TCP packet UDP packet UDP sender packets
29 TCP+UDP Traffic TCP sender packets Decrease packets to avoid congestion TCP packet UDP packet UDP sender packets Rate will not change (No congestion avoidance)
30 TCP+UDP Traffic TCP sender packets Decrease packets to avoid congestion TCP packet UDP packet UDP sender packets Rate will not change (No congestion avoidance)
31 By S. Floyd Maximum throughput availability of TCP TCP friendly traffic T : Traffics B : Packet size p : Packet losses R : RTT
32 Remote connection Leased line connection issues
33 Leased line configuration Using 64K + 128K leased line 128K for video conference 64K for internet 8K reserved for phones 8K reserved for audio system Rest for internet Using 256K leased line with rate control 128K resource when video conference is used Connecting internet phone Rest for internet
34 Network configuration Cisco 1700 Router PCs PCs PCs PCs PCs PCs PCs Subnet1 ( /27 ) Video Conference Management Subnet2 ( /24) VoIP (Internet phone) WE need to replace some hubs to switches
35 Difference between hubs and HUBS switches Computers UPLINK
36 Difference between hubs and Switches switches Computers UPLINK
37 Individual switch at every room NOC switch Switch subnet2 wireless
38 Port VLANs Port virtual networks Port vlan capable switch VLAN ID /22 VLAN ID /22 VLAN ID /22 UPLINK
39 Tagged VLANs Virtual networks Tag capable switch Tag ID /22 Tag ID /22 Tag ID /22 UPLINK
40 Cabling issues
41 EIA/TIA-568B Cables Cables we need to think about Category Use Bandwidth Cat 1 Analog phone lines 1Mbps Cat 2 4Mbps Token Ring 4Mbps Cat 3 10BASE-T 10Mbps Cat 4 16Mbps Token Ring 20Mbps Cat 5 100BASE-TX 100Mbps Cat 5E 1000BASE-TX 1000Mbps Cat BASE-TX~ 1000Mbps~ Cat BASE-TX~ 1000Mbps~ We are Mixed!
42 EIA/TIA-568B Length Maximum recommended cable length 90m Patch cables 6m Work areas 3m
43 BACKBONE Telecom Fiji and Fiji Government
44 Southern Cross Networks 16Wave/Fiber 3 pair Fiber Total: 480G 5827Km 16Wave/Fiber 3 pair Fiber Total: 480G Kahe point 454Km 16Wave/Fiber 4 pair Fiber Total: 640G 4670Km 4127Km Spencer Beach 1601Km 16Wave/Fiber 4 pair Fiber Total: 640G Hillsboro 349Km 1593Km San Jose Morro Bay Brookvale Alexandria 16Wave/Fiber 3 pair Fiber Total: 480G DF 3534Km 31Km Suva 16Wave/Fiber 3 pair Fiber Total: 480G 2240Km 15Km Whennuapal DF 7995Km 16Wave/Fiber 3 pair Fiber Total: 480G Takapuna 16Wave/Fiber 3 Fiber Total: 480G
45 Optical fiber around the globe
46 D-WDM: Dense Wavelength Division Multiplexing Send multiple waves in single fiber Wave1 Wave2 Wave3 t t t Wave1 Wave2 Wave3 t t t Different reflection for different wave Difference in reach ability time Source: t
47 Wireless networks b, a, g Seamless wireless connectivity inside the campus Wireless 1 Wireless 4 Wireless 2 Wireless 3 Wireless 4 Wireless 3 Wireless 3 Wireless 1 USP Wireless 4 Wireless 2 Wireless 2 Wireless 1 4 color problems
48 OSI Layer model data restoring Encoding packet packet frame signal All we see is an application layer and physical layer
49 OSI Layer and packet Transmission Each layer adds necessary information and delivers it to the lower layer Receiver Layer Info. Each layer processes the data within the information, Data Application restores it, and Application passes to Data the upper layer TCP UDP TCP UDP IP Network Interface Physical Transmit node IP Network Interface Physical Receiver node
50 Actual Layering model インターネット Religion / God Society / Political の基本的概念 Realistic Layer Religion / God Society / Political Person Person Application Presentation Session Transport Network Data link Physical Traditional OSI Layer Application Presentation Session Transport Network Data link Physical
51 1) Physical Layer Physical Signal transport line Strength of signal Encoding modulation Media Fibers, copper wires, AC outlet, satellites, wireless ITU-T, ISO Specifications X.25,IEEE,ATM,ISDN Fibers: SONET,FDH
52 2) Data Link Layer Protocol specification for sending packet to physical communication medium Synchronous, transmission control CSMA/CD Identification MAC Address MAC Address Error Correction CRC Checksum
53 3) Network Layer Unaware of physical lines, considering point to point transmission through the whole internet. IPv4,IPv6 Unique address Routing
54 4) Transport layer Inter process communication specification for each node (host) TCP,UDP Service identification inside the node (port)
55 5) Session Layer Layer specification of session (from beginning of communication and the end) Finite State Machine Initilize State, *** State, etc RPC (Remote Procedure Call) Generally application handles the session
56 6) Presentation Layer Specification of presentation of data communicated by session layer( coding, encryption) Byte order Least/Most Significant Bit (LSB/MSB) Htonl (), Htons () Generally, application handles the presentation of data.
57 7) Application Layer For communication between application Format HTTP, FTP
58 8) People Layer Protocol between human communication Language
59 9) Society / Political Layer Protocol specification between society, organization. Demands, morals,
60 10) Religions / Gods layer Protocol between philosophical, Religion
61 World are connected with IP HTTP FTP DNS HTTP FTP DNS TCP UDP TCP UDP IP IP IP IP LAN WAN LAN The Internet
62 Petrified architecture Class Used with networks without subnet Sometimes used with ab. Class D 224 Class E 240 Class C 192 Class A Class B Class A Large scale networks machines Class B medium scale networks 台分 machines Class C small scale networks 256 台分 machines Class D reserved for Multicast Class E reserved for test
63 Private IP Address For used with connection without external network, experimental network NAT (NetworkAddressTranslator) Class A Class B Class C
64 New IP Technology, IPv6 Ver Class Payload Length Flow Label Next Header Hop Limit Source Address (128bits) Destination Address (128bits) (Optional Headers) Data
65 Before I Finish Without your help, USP will not improve Good environment = good research Good food = good research Good people = good research Good collaboration = good research Thank you very much
66 See you again!
Networking interview questions
Networking interview questions What is LAN? LAN is a computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings. However, one LAN can be connected
More informationMTA_98-366_Vindicator930
MTA_98-366_Vindicator930 Number: 98-366 Passing Score: 700 Time Limit: 45 min File Version: 1.0 http://www.gratisexam.com/ Microsoft Technology Associate Networking Fundamentals MTA 98-366 Exam A QUESTION
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 informationMultimedia Systems. Networks WS 2009/2010
Multimedia Systems WS 2009/2010 Networks Prof. Dr. Paul Müller University of Kaiserslautern, Germany Integrated Communication Systems Lab Email: pmueller@informatik.uni-kl.de 1 Outline Network basics for
More informationก ก Information Technology II
ก ก 202103 Information Technology II ก ก ก ก ก (LAN), ก LAN, ก ก (LAN) ก ก ก LAN ก LAN ก LAN Topology Bus LAN Star LAN Ring LAN Wireless LAN Wireless LAN Wireless ก (LAN) ก ก ก LAN ก LAN WAN ก Random Access
More informationNavpreet Singh INTRODUCTION TO COMPUTER NETWORKS. Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA
INTRODUCTION TO COMPUTER NETWORKS Navpreet Singh Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA (Ph : 2597371, Email : navi@iitk.ac.in) About Myself About Myself I am Network Manager
More informationTypical Network Uses
Computer Networks Introduction The next Great Revolution - Computer Networks- computers connected together for exchanging information Our information-oriented society - applications in education, commerce,
More informationSYSTEMS ADMINISTRATION USING CISCO (315)
Page 1 of 11 Contestant Number: Time: Rank: SYSTEMS ADMINISTRATION USING CISCO (315) REGIONAL 2016 Multiple Choice: Multiple Choice (50 @ 10 points each) TOTAL POINTS (500 points) (500 points) Failure
More informationNetwork Security Fundamentals. Network Security Fundamentals. Roadmap. Security Training Course. Module 2 Network Fundamentals
Network Security Fundamentals Security Training Course Dr. Charles J. Antonelli The University of Michigan 2013 Network Security Fundamentals Module 2 Network Fundamentals Roadmap Network Fundamentals
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 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 informationHands-On Network Security: Practical Tools & Methods
Hands-On Network Security: Practical Tools & Methods Security Training Course Dr. Charles J. Antonelli The University of Michigan 2012 Hands-On Network Security Module 2 Network Fundamentals Roadmap Network
More informationIT114 NETWORK+ Learning Unit 1 Objectives: 1, 2 Time In-Class Time Out-Of-Class Hours 2-3. Lectures: Course Introduction and Overview
IT114 NETWORK+ Course Objectives Upon successful completion of this course, the student will be able to: 1. Identify the devices and elements of computer networks; 2. Diagram network models using the appropriate
More informationComputer Network Fundamentals (IT 221)
Computer Network Fundamentals (IT 221) أساسيات شبكات الحاسب Business Applications: Lecture 1: Computer network: collection of autonomous computers interconnected by a single technology. Goals: sharing
More informationRAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY
RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING QUESTION BANK SUBJECT NAME: COMPUTER NETWORKS SUBJECT CODE: CST52 UNIT-I 2 MARKS 1. What is Network? 2.
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 informationData Communication. Introduction of Communication. Data Communication. Elements of Data Communication (Communication Model)
Data Communication Introduction of Communication The need to communicate is part of man s inherent being. Since the beginning of time the human race has communicated using different techniques and methods.
More informationOutline: 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
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 informationSpecial expressions, phrases, abbreviations and terms of Computer Networks
access access point adapter Adderssing Realm ADSL (Asymmetrical Digital Subscriber Line) algorithm amplify amplitude analog antenna application architecture ARP (Address Resolution Protocol) AS (Autonomous
More informationAnnouncements Computer Networking. What is the Objective of the Internet? Today s Lecture
Announcements 15-441 15-441 Computer ing 15-641 Lecture 2 Protocol Stacks Peter Steenkiste Fall 2016 www.cs.cmu.edu/~prs/15-441-f16 Sign up for piazza: https://piazza.com/cmu/fall2016/15441641 P1 will
More informationNetwork Protocols - Revision
Network Protocols - Revision Luke Anderson luke@lukeanderson.com.au 18 th May 2018 University Of Sydney Overview 1. The Layers 1.1 OSI Model 1.2 Layer 1: Physical 1.3 Layer 2: Data Link MAC Addresses 1.4
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 informationCS 428/528 Computer Networks Lecture 01. Yan Wang
1 CS 428/528 Computer Lecture 01 Yan Wang 2 Motivation: Why bother? Explosive growth of networks 1989, 100,000 hosts on the Internet Distributed Applications and Systems E-mail, WWW, multimedia, distributed
More informationComputer Networking. Introduction. Quintin jean-noël Grenoble university
Computer Networking Introduction Quintin jean-noël Jean-noel.quintin@imag.fr Grenoble university Based on the presentation of Duda http://duda.imag.fr 1 Course organization Introduction Network and architecture
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 & Computer Networks INFO
Data Communication & Computer Networks INFO Instructor: Dr. A. SARI Department: Management Information Systems Course Code: MIS 305 Academic Term: 2013/2014 Fall Title: Data Communication & Computer Networks
More informationSolved MCQ of Computer networking. Set-1
Solved MCQ of Computer networking Set-1 1. The computer network is A) Network computer with cable B) Network computer without cable C) Both of the above D) None of the above 2. FDDI used which type of
More informationFundamentals of IP Networking 2017 Webinar Series Part 4 Building a Segmented IP Network Focused On Performance & Security
Fundamentals of IP Networking 2017 Webinar Series Part 4 Building a Segmented IP Network Focused On Performance & Security Wayne M. Pecena, CPBE, CBNE Texas A&M University Educational Broadcast Services
More informationLayer 2 functionality bridging and switching
Layer 2 functionality bridging and switching BSAD 141 Dave Novak Sources: Network+ Guide to Networks, Dean 2013 Overview Layer 2 functionality Error detection Bridges Broadcast and collision domains How
More informationNetworking. Networking and Communication Trends Convergence (Accessibility) Speed Stability Simplicity* Embeddedness
Networking and Communication Trends Convergence (Accessibility) Speed Stability Simplicity* Embeddedness What is a Computer Network General definition Related hardware Network Interface Card Network Operating
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 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 informationComputer Communication Networks
Contents ELL 785 Computer Communication Networks Introduction Lecture 1 Taxonomy of communication works Computer Communication Networks Building a work ed work architecture 1-1 Introduction PC server wireless
More informationE-Commerce. Infrastructure I: Computer Networks
E-Commerce Infrastructure I: Computer Networks Almost all computers today are networked or part of a distributed system. I will provide an overview of networking and a basic description of network technology.
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 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 informationConfiguring your VLAN. Presented by Gregory Laffoon
Configuring your VLAN Presented by Gregory Laffoon 1 Overview of Networking Terms Networking Terms Overview OSI Model Defines a networking framework for implementing protocols in seven layers Control is
More information31270 Networking Essentials Focus, Pre-Quiz, and Sample Exam Answers
31270 Networking Essentials Focus, Pre-Quiz, and Sample Exam Answers CONTENTS Focus Questions... 2 Chapter 1: Explore the Network... 2 Chapter 2: Configure a Network Operating System... 5 Chapter 3: Network
More informationCommunicating over the Network
Communicating over the Network Network Fundamentals Chapter 2 Version 4.0 1 Network Structure The elements of communication 3 common elements of communication Message source people/electronic devices need
More informationRaj Jain. The Ohio State University Columbus, OH
Columbus, OH 43210 Jain@CIS.Ohio-State.Edu http://www.cis.ohio-state.edu/~jain/ 3-1 Overview ISO/OSI Reference Model TCP/IP Reference Model Differences between ISO and TCP Ethernet/IEEE 802.3 LANs Interconnecting
More informationNetwork Protocols and Architectures
Network Protocols and Architectures Introduction 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 informationLecture 3 Protocol Stacks and Layering
Lecture 3 Protocol Stacks and ing Hui Zhang School of Computer Science Carnegie Mellon University 15-441 Networking, Fall 2007 http://www.cs.cmu.edu/~srini/15-441/f07/ 1 What is a Communication Network?
More informationObjectives. Network Structure. Network Structure
2007 Cisco Systems, Inc. All rights reserved. Cisco Public Objectives Communicating over the Network Network Fundamentals Chapter 2 Chapter 1 1 Describe the structure of a network, including the devices
More informationChapter 16 Networking
Chapter 16 Networking Outline 16.1 Introduction 16.2 Network Topology 16.3 Network Types 16.4 TCP/IP Protocol Stack 16.5 Application Layer 16.5.1 Hypertext Transfer Protocol (HTTP) 16.5.2 File Transfer
More informationImi :... Data:... Nazwisko:... Stron:...
Imi :.................................................... Data:....................... Nazwisko:............................................... Stron:...................... 1. Which of the following protocols
More informationLecture A4 Network / Internet. Computing and Art : Nature, Power, and Limits CC 3.12: Fall 2007
Lecture A4 Network / Internet Computing and Art : Nature, Power, and Limits CC 3.12: Fall 2007 Instructor Functionalia Chipp Jansen, chipp@sci.brooklyn.cuny.edu Course Web Page http://www.sci.brooklyn.cuny.edu/~chipp/cc3.12/
More informationINSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad
INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad - 500 043 COMPUTER SCIENCE AND ENGINEERING TUTORIAL QUESTION BANK Name Code Class Branch COMPUTER NETWORKS A50515 Year 2016 17 Coordinator
More informationHow does the Internet Work? The Basics: Getting a Web Page. The Basics: Getting a Web Page. Client-Server model. The Internet: Basics
How does the Internet Work? When you type a URL (Uniform Resource Locator) into a Web Browser and press Return, what do you think happens? That is, what steps do you think are required to obtain a web
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 informationNetwork Model. Why a Layered Model? All People Seem To Need Data Processing
Network Model Why a Layered Model? All People Seem To Need Data Processing Layers with Functions Packet Propagation Each router provides its services to support upper-layer functions. Headers (Encapsulation
More informationCommunication Networks
Communication Networks Nicholas Honeth (nicholash@ics.kth.se) Contents of the series Lecture 10 - Recap of the networks we ve seen so far - OSI model - Circuit and packet switching - Physical media Lecture
More informationECE 650 Systems Programming & Engineering. Spring 2018
ECE 650 Systems Programming & Engineering Spring 2018 Networking Introduction Tyler Bletsch Duke University Slides are adapted from Brian Rogers (Duke) Computer Networking A background of important areas
More informationAssignment - 1 Chap. 1 Wired LAN s
Assignment - 1 Chap. 1 Wired LAN s 1. (1 Mark) 1. Draw the frame format of Ethernet. 2. What is unicast, multicast and broadcast address? 3. State the purpose of CRC field. 2. (5 Marks) 1. Explain how
More informationIdentify the features of network and client operating systems (Windows, NetWare, Linux, Mac OS)
Course Outline Network+ Duration: 5 days (30 hours) Learning Objectives: Install and configure a network card Define the concepts of network layers Understand and implement the TCP/IP protocol Install
More informationIntroduction. Communication
Introduction These slides are created by Dr. Yih Huang of George Mason University. Students registered in Dr. Huang's courses at GMU can make a single machine-readable copy and print a single copy of each
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 informationThe Internet software layers
1 2 The Internet software layers SMTP, Telnet, FTP, POP3, IMAP TCP, UDP IP: RIP, BGP, OSPF Ethernet, Wireless LAN, Token Ring Twisted pair, coaxial, microwave, optical fiber 3 4 Ethernet 1973 Xerox s researcher
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 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 2. Communicating Over The Network. CCNA1-1 Chapter 2
Chapter 2 Communicating Over The Network CCNA1-1 Chapter 2 Communicating Over the Network The Platform for Communications CCNA1-2 Chapter 2 Elements of Communication People communicate in many different
More informationChapter 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
More informationIntroduction to Computer Networks INTRODUCTION TO COMPUTER NETWORKS
INTRODUCTION TO COMPUTER NETWORKS Computer Networks Computer network connects two or more autonomous computers. The computers can be geographically located anywhere. LAN, MAN & WAN Network in small geographical
More informationFINAL EXAM REVIEW PLEASE NOTE THE MATERIAL FROM LECTURE #16 at the end. Exam 1 Review Material
FINAL EXAM REVIEW PLEASE NOTE THE MATERIAL FROM LECTURE #16 at the end Chapters in the book 1, 2, 3, 5, 6 Exam 1 Review Material Topics You are also responsible for the reading in the chapters understanding
More informationSlides for Chapter 3: Networking and Internetworking
Slides for Chapter 3: Networking and Internetworking From Coulouris, Dollimore, Kindberg and Blair Distributed Systems: Concepts and Design Edition 5, Addison-Wesley 202 Figure 3. Network performance km
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 informationROYAL INSTITUTE OF INFORMATION & MANAGEMENT
ROYAL INSTITUTE OF INFORMATION & MANAGEMENT BASICS NETWORKING CHAPTER 1 Networking Basics to Networking Advantages of Networking Types of Network 1 Local Area Network (LAN) LAN features Basic LAN components
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 informationQUESTION BANK EVEN SEMESTER
Fatima Michael College of Engineering and Technology DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK EVEN SEMESTER SUB CODE & NAME: EC2352 COMPUTER NETWORKS YEAR / SEM: III / VI Staff
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 informationTypes of Computer Networks. ICS 614: Computer Networks Concepts and Principles 11
Types of Computer Networks ICS 614: Computer Networks Concepts and Principles 11 Types of networks Networks are categorized by distribution, size, and architecture. A network can be as simple as a single
More informationITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
More informationChapter 5. The Network Layer
Chapter 5 The Network Layer Congestion Control Algorithms General Principles of Congestion Control Congestion Prevention Policies Congestion Control in Virtual-Circuit Subnets Congestion Control in Datagram
More informationIntroduction to Information Science and Technology 2017 Networking I. Sören Schwertfeger 师泽仁
I Sören Schwertfeger 师泽仁 Outline Internet History of the Internet Internet Structure Internet Protocols Network layer details 1. Physical Layer 2. Data Link Layer 3. Network Layer Internet: Huge network
More informationPatch Panel Cable Guide 3-5-3
Net... 5... 5... 5... 7... 8... 8... LAN - - WAN - - 9... - - 9... 9... - 4-9... - 4-... - 4-... 4-4-... Hub and Spoke 5-4- 4... Full Mesh 6-4- 5...Partial Mesh 7-4- 6... 8-4- 6... 7.... Client/Server
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 informationOutline. A Professional Company in Software-Defined Networking (SDN) Copyright , EstiNet Technologies Inc. All Rights Reserved..
Physical Layer Outline Signal Propagation Media The Calculation of Signal Delivery Time The Evaluation of End-to-end Delay Signal Encoding and Modulation Wired Signal s Encoding, Decoding and Decoding
More informationCS 416: Operating Systems Design April 11, 2011
Modes of connection Operating Systems Design 3. Client-Server Networking Paul Krzyzanowski pxk@cs.rutgers.edu Circuit-switched dedicated path guaranteed (fixed) bandwidth [almost] constant latency Packet-switched
More informationChapter 1 Communication
Chapter 1 Communication Networks and Services Network Architecture and Services Telegraph Networks & Message Switching Telephone Networks and Circuit Switching Computer Networks & Packet Switching Future
More informationPart 1: Introduction. Goal: Review of how the Internet works Overview
Part 1: Introduction Goal: Review of how the Internet works Overview Get context Get overview, feel of the Internet Application layer protocols and addressing Network layer / Routing Link layer / Example
More informationIntroduction... xiii Chapter 1: Introduction to Computer Networks and Internet Computer Networks Uses of Computer Networks...
Table of Contents Introduction... xiii Chapter 1: Introduction to Computer Networks and Internet... 1 1.1 Computer Networks... 1 1.1.1 Advantages of Computer Networks... 2 1.1.2 Disadvantages of Computer
More informationCS 204: Advanced Computer Networks
CS 204: Advanced Computer Networks Jiasi Chen Lectures: MWF 12:10-1pm Humanities and Social Sciences 1403 http://www.cs.ucr.edu/~jiasi/teaching/cs204_spring17/ 1 Why Networks? Supports the applications
More information5105: BHARATHIDASAN ENGINEERING COLLEGE NATTARMPALLI UNIT I FUNDAMENTALS AND LINK LAYER PART A
5105: BHARATHIDASAN ENGINEERING COLLEGE NATTARMPALLI 635 854. NAME OF THE STAFF : R.ANBARASAN DESIGNATION & DEPARTMENT : AP/CSE SUBJECT CODE : CS 6551 SUBJECT NAME : COMPUTER NETWORKS UNIT I FUNDAMENTALS
More informationStudy Guide. Module Two
Module Two Study Guide Study Guide Contents Part One -- Textbook Questions Part Two -- Assignment Questions Part Three -- Vocabulary Chapter 4 Data Link Layer What is the function of the data link layer?
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 informationLecture Outline. Lecture 2. OSI model and networking. The OSI model and networking. The OSI model and networking. The OSI model and networking
Lecture 2 The OSI model Chapter 2, specifically pages 42-58 Dave Novak School of Business Administration, University of Vermont Sources: 1) Network+ Guide to Networks, Dean 2013 2) Comer, Computer Networks
More informationIntroductions. Computer Networking Lecture 01. January 16, HKU SPACE Community College. HKU SPACE CC CN Lecture 01 1/36
Introductions Computer Networking Lecture 01 HKU SPACE Community College January 16, 2012 HKU SPACE CC CN Lecture 01 1/36 Outline What is a Computer Network? Basic Requirements of Building a Computer Network
More informationComputer Networks Question Bank
Computer Networks Question Bank 1. Describe in detail OSI Model ANS: OSI (Open Systems Interconnection) is reference model for how applications can communicate over a network. A reference model is a conceptual
More informationLocal Area Networks (LANs): Packets, Frames and Technologies Gail Hopkins. Part 3: Packet Switching and. Network Technologies.
Part 3: Packet Switching and Gail Hopkins Local Area Networks (LANs): Packets, Frames and Technologies Gail Hopkins Introduction Circuit Switching vs. Packet Switching LANs and shared media Star, bus and
More informationFacilitator. Introduction to IT Networking for Facilities Managers. Class Logistics
Introduction to IT Networking for Facilities Managers APPA Institute for Facilities Management Dallas, TX January 16, 2017 Facilitator J. Craig Klimczak, D.V.M., M.S. Chief Information Officer Community
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 informationDATA COMMUNICATION AND NETWORKS
DATA COMMUNICATION AND NETWORKS A/L Guide TERAN SUBASINGHE Data Communication What is data communication? Data Communication is a process of exchanging data or information between two or more devices along
More informationChapter 2. Communicating Over The Network
Chapter 2 Communicating Over The Network CCNA1-1 Chapter 2 Note for Instructors These presentations are the result of a collaboration among the instructors at St. Clair College in Windsor, Ontario. Thanks
More informationCMSC 611: Advanced. Interconnection Networks
CMSC 611: Advanced Computer Architecture Interconnection Networks Interconnection Networks Massively parallel processor networks (MPP) Thousands of nodes Short distance (
More informationETSF10 Internet Protocols Transport Layer Protocols
ETSF10 Internet Protocols Transport Layer Protocols 2012, Part 2, Lecture 2.2 Kaan Bür, Jens Andersson Transport Layer Protocols Special Topic: Quality of Service (QoS) [ed.4 ch.24.1+5-6] [ed.5 ch.30.1-2]
More information1/29/2008. From Signals to Packets. Lecture 6 Datalink Framing, Switching. Datalink Functions. Datalink Lectures. Character and Bit Stuffing.
/9/008 From Signals to Packets Lecture Datalink Framing, Switching Peter Steenkiste Departments of Computer Science and Electrical and Computer Engineering Carnegie Mellon University Analog Signal Digital
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 informationBABU MADHAV INSTITUTE OF INFORMATION TECHNOLOGY, UTU 2017
5 years Integrated M.Sc (IT) Semester 3 Question Bank 060010310 DSE4 Computer Networks Unit 1 Introduction Short Questions 1. State the term data with respect to computer network. 2. What is data communication?
More informationNetworking and Health Information Exchange: ISO Open System Interconnection (OSI)
Networking and Health Information Exchange: ISO Open System Interconnection (OSI) Lecture 4 Audio Transcript Slide 1 Welcome to Networking and Health Information Exchange, ISO Open System Interconnection
More information