1 Chapter 6 Telecommunications, the Internet, and Wireless Technology 6.1 Copyright 2011 Pearson Education, Inc.
2 STUDENT LEARNING OBJECTIVES What are the principal components of telecommunications networks and key networking technologies? What are the main telecommunications transmission media and types of networks? How do the Internet and Internet technology work and how do they support communication and e- business? 6.2 Copyright 2011 Pearson Education, Inc.
3 STUDENT LEARNING OBJECTIVES What are the principal technologies and standards for wireless networking, communication, and Internet access? Why are radio frequency identification (RFID) and wireless sensor networks valuable for business? 6.3 Copyright 2011 Pearson Education, Inc.
4 Los Angeles International Airport Soars with New Networking Technology Problem: outdated physical facilities and IT infrastructure. Solutions: upgrade both facilities and IT by Copyright 2011 Pearson Education, Inc.
5 Hyatt Regency Osaka Uses Wireless Networking for High-Touch Service LAWA management is setting up an Ethernet localarea network throughout the airport and will allow smaller airlines access to this technology. Demonstrates IT s role in hastening the communication and flow of information. Illustrates digital technology s role in contemporary networking technology. 6.5 Copyright 2011 Pearson Education, Inc.
6 Hyatt Regency Osaka Uses Wireless Networking for High-Touch Service 6.6 Copyright 2011 Pearson Education, Inc.
7 Telecommunications and Networking in Today s Business World Convergence: Telephone networks and computer networks converging into single digital network using Internet standards Cable companies providing voice service Broadband: Networking and Communication Trends More than 60 percent U.S. Internet users have broadband access Broadband wireless: Voice and data communication as well as Internet access are increasingly taking place over broadband wireless platforms 6.7 Copyright 2011 Pearson Education, Inc.
8 Telecommunications and Networking in Today s Business World What Is a Computer Network? Two or more connected computers Major components in simple network Client computer Server computer Network interfaces (NICs) Connection medium Network operating system Hub or switch Routers Device used to route packets of data through different networks, ensuring that data sent gets to the correct address 6.8 Copyright 2011 Pearson Education, Inc.
9 Telecommunications and Networking in Today s Business World Components of a Simple Computer Network Illustrated here is a very simple computer network, consisting of computers, a network operating system residing on a dedicated server computer, cabling (wiring) connecting the devices, network interface cards (NIC), switches, and a router. Figure Copyright 2011 Pearson Education, Inc.
10 Telecommunications and Networking in Today s Business World Networks in Large Companies Components can include: Hundreds of local area networks (LANs) linked to firmwide corporate network Various powerful servers Web site Corporate intranet, extranet Backend systems Mobile wireless LANs (Wi-Fi networks) Videoconferencing system Telephone network Wireless cell phones 6.10 Copyright 2011 Pearson Education, Inc.
11 Telecommunications and Networking in Today s Business World Corporate Network Infrastructure Today s corporate network infrastructure is a collection of many different networks from the public switched telephone network, to the Internet, to corporate local area networks linking workgroups, departments, or office floors. Figure Copyright 2011 Pearson Education, Inc.
12 Telecommunications and Networking in Today s Business World Key Digital Networking Technologies Client/server computing Distributed computing model Clients linked through network controlled by network server computer Server sets rules of communication for network and provides every client with an address so others can find it on the network Has largely replaced centralized mainframe computing The Internet: largest implementation of client/server computing 6.12 Copyright 2011 Pearson Education, Inc.
13 Telecommunications and Networking in Today s Business World Key Digital Networking Technologies Packet switching Method of slicing digital messages into parcels (packets), sending packets along different communication paths as they become available, and then reassembling packets at destination Previous circuit-switched networks required assembly of complete point-to-point circuit Packet switching more efficient use of network s communications capacity 6.13 Copyright 2011 Pearson Education, Inc.
14 Telecommunications and Networking in Today s Business World Packet-Switched Networks and Packet Communications Data are grouped into small packets, which are transmitted independently over various communications channels and reassembled at their final destination. Figure Copyright 2011 Pearson Education, Inc.
15 Telecommunications and Networking in Today s Business World Key Digital Networking Technologies TCP/IP and connectivity Connectivity between computers enabled by protocols Protocols: rules that govern transmission of information between two points Transmission Control Protocol/Internet Protocol (TCP/IP) Common worldwide standard that is basis for Internet Department of Defense reference model for TCP/IP Four layers Application layer Transport layer Internet layer Network interface layer 6.15 Copyright 2011 Pearson Education, Inc.
16 Telecommunications and Networking in Today s Business World The Transmission Control Protocol/Internet Protocol (TCP/IP) Reference Model This figure illustrates the four layers of the TCP/IP reference model for communications. Figure Copyright 2011 Pearson Education, Inc.
17 Types of Networks Signals: digital versus analog Modem: translates digital signals into analog form Local-area networks (LANs) Campus-area networks (CANs) Peer-to-peer Topologies: star, bus, ring Metropolitan and wide-area networks Wide-area networks (WANs) Communications Networks Metropolitan-area networks (MANs) 6.17 Copyright 2011 Pearson Education, Inc.
18 Communications Networks Functions of the Modem A modem is a device that translates digital signals from a computer into analog form so that they can be transmitted over analog telephone lines. The modem also translates analog signals back into digital form for the receiving computer. Figure Copyright 2011 Pearson Education, Inc.
19 Communications Networks Network Topologies The three basic network topologies are the bus, star, and ring. Figure Copyright 2011 Pearson Education, Inc.
20 Communications Networks Physical Transmission Media Twisted wire (modems) Coaxial cable Fiber optics and optical networks Dense wavelength division multiplexing (DWDM) Wireless transmission media and devices Microwave Satellites Cellular telephones Transmission speed (hertz, bandwidth) 6.20 Copyright 2011 Pearson Education, Inc.
21 Communications Networks BP Amoco s Satellite Transmission System Communication satellites help BP Amoco transfer seismic data between oil exploration ships and research centers in the United States. Figure Copyright 2011 Pearson Education, Inc.
22 The Global Internet What is the Internet? Internet addressing and architecture The Domain Name System Hierarchical structure Top-level domains Internet architecture and governance No formal management: IAB, ICANN, W3C The future Internet: IPv6 and Internet Copyright 2011 Pearson Education, Inc.
23 The Global Internet The Domain Name System The Domain Name System is a hierarchical system with a root domain, top-level domains, second-level domains, and host computers at the third level. Figure Copyright 2011 Pearson Education, Inc.
24 The Internet backbone connects to regional networks, which in turn provide access to Internet service providers, large firms, and government institutions. Network access points (NAPs) and metropolitan area exchanges (MAEs) are hubs where the backbone intersects regional and local networks and where backbone owners connect with one another. The Global Internet Internet Network Architecture Figure Copyright 2011 Pearson Education, Inc.
25 The Global Internet Internet Services Chatting and instant messaging Newsgroups Telnet File Transfer Protocol (FTP) World Wide Web VoIP Virtual private network (VPN) 6.25 Copyright 2011 Pearson Education, Inc.
26 The Global Internet Client/Server Computing on the Internet Client computers running Web browser and other software can access an array of services on servers over the Internet. These services may all run on a single server or on multiple specialized servers. Figure Copyright 2011 Pearson Education, Inc.
27 The Global Internet How Voice over IP Works A VoIP phone call digitizes and breaks up a voice message into data packets that may travel along different routes before being reassembled at the final destination. A processor nearest the call s destination, called a gateway, arranges the packets in the proper order and directs them to the telephone number of the receiver or the IP address of the receiving computer. Figure Copyright 2011 Pearson Education, Inc.
28 The Global Internet A Virtual Private Network Using the Internet Figure 6-12 This VPN is a private network of computers linked using a secure tunnel connection over the Internet. It protects data transmitted over the public Internet by encoding the data and wrapping them within the Internet Protocol (IP). By adding a wrapper around a network message to hide its content, organizations can create a private connection that travels through the public Internet Copyright 2011 Pearson Education, Inc.
29 The Global Internet The World Wide Web HTML (Hypertext Markup Language): Formats documents for display on Web Hypertext Transfer Protocol (HTTP): Communications standard used for transferring Web pages Uniform resource locators (URLs): Addresses of Web pages E.g., Web servers Software for locating and managing Web pages 6.29 Copyright 2011 Pearson Education, Inc.
30 The Global Internet The World Wide Web Search engines Started in early 1990s as relatively simple software programs using keyword indexes Today, major source of Internet advertising revenue via search engine marketing, using complex algorithms and page ranking techniques to locate results Shopping bots Use intelligent agent software for searching Internet for shopping information 6.30 Copyright 2011 Pearson Education, Inc.
31 Web 2.0 The Global Internet The World Wide Web Second-generation interactive Internet-based services enabling people to collaborate, share information, and create new services online Blogs: chronological, informal Web sites created by individuals using easy-to-use Weblog publishing tools RSS (Really Simple Syndication): syndicates Web content so aggregator software can pull content for use in another setting or viewing later Wikis: collaborative Web sites where visitors can add, delete, or modify content on the site 6.31 Copyright 2011 Pearson Education, Inc.
32 The Global Internet How Google Works The Google search engine is continuously crawling the Web, indexing the content of each page, calculating its popularity, and storing the pages so that it can respond quickly to user requests to see a page. The entire process takes about one-half second. Figure Copyright 2011 Pearson Education, Inc.
33 The Global Internet Major Web Search Engines Google is the most popular search engine on the Web, handling 56 percent of all Web searches. Figure Copyright 2011 Pearson Education, Inc.
34 The Global Internet Intranets Intranets and Extranets Use existing network infrastructure with Internet connectivity standards software developed for the Web. Create networked applications that can run on many types of computers. Protected by firewalls. Extranets Allow authorized vendors and customers access to an internal intranet. Used for collaboration. Also subject to firewall protection Copyright 2011 Pearson Education, Inc.
35 The Wireless Revolution Wireless devices PDAs, BlackBerry, smart phones Cellular systems Competing standards for cellular service United States: CDMA Most of rest of world: GSM Third-generation (3G) networks Higher transmission speeds suitable for broadband Internet access 6.35 Copyright 2011 Pearson Education, Inc.
36 Wireless computer networks and Internet access Bluetooth (802.15) Links up to 8 devices in 10-m area using low-power, radiobased communication Useful for personal networking (PANs) Wi-Fi (802.11) The Wireless Revolution Set of standard: a, b, g, n Used for wireless LAN and wireless Internet access Use access points: device with radio receiver/transmitter for connecting wireless devices to a wired LAN 6.36 Copyright 2011 Pearson Education, Inc.
37 Bluetooth enables a variety of devices, including cell phones, PDAs, wireless keyboards and mice, PCs, and printers, to interact wirelessly with each other within a small 30-foot (10- meter) area. In addition to the links shown, Bluetooth can be used to network similar devices to send data from one PC to another, for example. Figure 6-15 The Wireless Revolution A Bluetooth Network (PAN) 6.37 Copyright 2011 Pearson Education, Inc.
38 Mobile laptop computers equipped with wireless network interface cards link to the wired LAN by communicating with the access point. The access point uses radio waves to transmit network signals from the wired network to the client adapters, which convert them into data that the mobile device can understand. The client adapter then transmits the data from the mobile device back to the access point, which forward the data to the wired network. The Wireless Revolution An Wireless LAN Figure Copyright 2011 Pearson Education, Inc.
39 Wireless computer networks and Internet access Wi-Fi (cont.) Hotspots: one or more access points in public place to provide maximum wireless coverage for a specific area Weak security features WiMax (802.16) Wireless access range of 31 miles Require WiMax antennas Broadband cellular wireless The Wireless Revolution Many cell services offer Wi-Fi capabilities for Internet access 6.39 Copyright 2011 Pearson Education, Inc.
40 The Wireless Revolution Radio frequency identification (RFID) Use tiny tags with embedded microchips containing data about an item and location Tags transmit radio signals over short distances to special RFID readers, which send data over network to computer for processing Active RFID: tags have batteries, data can be rewritten, range is hundreds of feet, more expensive Passive RFID: range is shorter, also smaller, less expensive, powered by radio frequency energy 6.40 Copyright 2011 Pearson Education, Inc.
41 The Wireless Revolution Radio frequency identification (RFID) Common uses: Automated toll-collection Tracking goods in a supply chain Requires companies to have special hardware and software Reduction in cost of tags making RFID viable for many firms 6.41 Copyright 2011 Pearson Education, Inc.
42 The Wireless Revolution How RFID Works RFID uses low-powered radio transmitters to read data stored in a tag at distances ranging from 1 inch to 100 feet. The reader captures the data from the tag and sends them over a network to a host computer for processing. Figure Copyright 2011 Pearson Education, Inc.
43 The Wireless Revolution Wireless sensor networks Networks of hundreds or thousands of interconnected wireless devices embedded into physical environment to provide measurements of many points over large spaces Used to monitor building security, detect hazardous substances in air, monitor environmental changes, traffic, or military activity Devices have built-in processing, storage, and radio frequency sensors and antennas Require low-power, long-lasting batteries and ability to endure in the field without maintenance 6.43 Copyright 2011 Pearson Education, Inc.
44 The Wireless Revolution A Wireless Sensor Network The small circles represent lower-level nodes and the larger circles represent high-end nodes. Lower-level nodes forward data to each other or to higherlevel nodes, which transmit data more rapidly and speed up network performance. Figure Copyright 2011 Pearson Education, Inc.
INFO 1500 Introduction to IT Fundamentals Learning Objectives 6. Telecommunications and networks, the Internet 1. Identify the principal components of telecommunications networks and key networking technologies.
Chapter 6 Telecommunications, Networks, and Wireless Computing Essay Questions: 1. Define a hub, switch, and a router. 2. List the challenges associated with managing contemporary telecommunications and
3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET The Business Value of Telecommunications and Networking Business value impacts of the telecommunications and Networking are: Declining transaction costs
Discovering Computers 2008 Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the the components required for for successful communications Identify various sending and receiving devices
Computer Networks A group of two or more computer systems linked together. There are many [types] of computer networks: Peer To Peer (workgroups) The computers are connected by a network, however, there
CHAPTER 8: NETWORKING AND DIGITAL COMMUNICATION Multiple Choice: 1. A basic computer network can be described as: A. a minimum of five computers linked together. B. a number of palmtop computers. C. two
E-Commerce Infrastructure II: the World Wide Web The Internet and the World Wide Web are two separate but related things Oct 15, 2004 www.dcs.bbk.ac.uk/~gmagoulas/teaching.html 1 Outline The Internet and
Chapter 7: Computer Networks, the Internet, and the World Wide Web Invitation to Computer Science, C++ Version, Third Edition Objectives In this chapter, you will learn about: Basic networking concepts
Review questions 1 Which network type is a specifically designed configuration of computers and other devices located within a confined area? A Peer-to-peer network B Local area network C Client/server
Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the components required for successful communications Identify various sending and receiving devices Explain the purpose of communications
MANAGEMENT INFORMATION SYSTEMS 8/E Raymond McLeod, Jr. and George Schell Chapter 10 Data Communications Copyright 2001 Prentice-Hall, Inc. 10-1 Objectives Understand data communication basics. Know the
Introduction to Computer Networks and Data Communications Chapter 1 Learning Objectives After reading this chapter, you should be able to: Define the basic terminology of computer networks Recognize the
Local Area Network By Bhupendra Ratha, Lecturer School of Library and Information Science Devi Ahilya University, Indore Email: firstname.lastname@example.org Local Area Network LANs connect computers and peripheral
Computer Networking: A Survey M. Benaiah Deva Kumar and B. Deepa, 1 Scholar, 2 Assistant Professor, IT Department, Sri Krishna College of Arts and Science College, Coimbatore, India. Abstract- Computer
Lecture 1 An Introduction to Networking Chapter 1, pages 1-22 Dave Novak BSAD 146, Introduction to Networking School of Business Administration University of Vermont Lecture Overview Brief introduction
NETWORKING TECHNOLOGIES (October 19, 2015) BUS3500 - Abdou Illia, Fall 2015 1 LEARNING GOALS Identify the major hardware components in networks. Identify and explain the various types of computer networks.
ADSL or Asymmetric Digital Subscriber Line Backbone Bandwidth Bit Commonly called DSL. Technology and equipment that allow high-speed communication across standard copper telephone wires. This can include
Chapter 12 Topics: Communication links LAN / WAN Internet / WWW A computer network is a set of independent computer systems interconnected by telecommunication links. CMPUT101 Introduction to Computing
5 Data Communication and Networking 5.1 Introduction Today computer is available in many offices and homes and therefore there is a need to share data and programs among various computers. With the advancement
Future Stars Grade X Manual Chapter 1 Networking and Telecommunication 1. Answer the following questions. a. What is telecommunication? Ans: The transfer of information at a far distance is known as telecommunication.
Page 1 of 8 Computer Networking Networks 9.1 Local area network A local area network (LAN) is a network that connects computers and devices in a limited geographical area such as a home, school, office
Data communications Think! Think!?? What makes it possible to communicate from point A to point B?? Long-Distance Transmission Media If you place a call outside the local transport area, an interchange
COMPUTERS ARE YOUR FUTURE CHAPTER 7 NETWORKS: COMMUNICATING AND SHARING RESOURCES Answers to End-of-Chapter Questions Matching g 1. router o 2. node i 3. ring l 4. hub c 5. star n 6. backbone b 7. latency
New York University, Leonard N. Stern School of Business C20.0001 Information Systems for Managers Fall 1999 Networking Fundamentals A network comprises two or more computers that have been connected in
Local Area Networks (LANs) The CCNT Local Area Networks (LANs) Course April 2012 release blueprint lists the following information. Courseware Availability Date identifies the availability date for the
Technology in Action Alan Evans Kendall Martin Mary Anne Poatsy Eleventh Edition Technology in Action Chapter 10 Behind the Scenes: Networking and Security in the Business World 2 Chapter Topics Client/Server
Teacher Assessment Blueprint Test Code: 5910 / Version: 01 Copyright 2011 NOCTI. All Rights Reserved. General Assessment Information Blueprint Contents General Assessment Information Written Assessment
Chapter 8: Computer Networking AIMS The aim of this chapter is to give a brief introduction to computer networking. OBJECTIVES At the end of this chapter you should be able to: Explain the following terms:
Chapter 4: Networking and the Internet Computer Science: An Overview Eleventh Edition by J. Glenn Brookshear Copyright 2012 Pearson Education, Inc. Chapter 4: Networking and the Internet 4.1 Network Fundamentals
C H A P T E R 7 The Internet, Intranets, and Extranets What is the Internet Millions of computers, all linked together on a computer network. A home computer usually links to the Internet using a phone
CITS1231 Web Technologies Client, Server, the Internet, and the Web Topic Outline How does the Internet work Client Server Architecture Connections Communications Protocols Addressing Routing One of the
CHAPTER 9: THE EVOLVING INTERNET Multiple Choice: 1. What was the department of the U.S. government that developed the initial stages of the Internet? A. Department of Commerce B. Department of Defense
1 / 17 Network: several computers who can communicate. Bus topology: bus Main example: Ethernet (1980 today: coaxial cable, twisted pair, 10Mb 1000Gb). Hardware has globally unique MAC addresses (IDs).
Network+ Guide to Networks, Fourth Edition Chapter 7 WANs, Internet Access, and Remote Connectivity Objectives Identify a variety of uses for WANs Explain different WAN topologies, including their advantages
Network Fundamentals Computer Literacy BASICS: A Comprehensive Guide to IC 3, 3 rd Edition 1 Objectives Describe a network. Explain the benefits of a network. Identify the risks of network computing. Describe
2 Computer Network and Communication 2.1 INTRODUCTION As we all know, the advances in Information technology revolutionized almost every aspect of our life. Education, industry, banking, researches and
Uses of a network A network is a way to connect computers so that they can communicate, exchange information and share resources in real time. Networks enable multiple users to access shared data and programs
Page 1 of 7 Computer Networking 7.1 What Is Computer Networking? A computer network consists of several computers that are connected to one another using devices that allow them to communicate. Computer
COMPUTERS ARE YOUR FUTURE CHAPTER 8 WIRED & WIRELESS COMMUNICATION Answers to End-of-Chapter Questions Matching g 1. whiteboard i 2. sending device o 3. streaming j 4. WiFi m 5. Webcam d 6. data transfer
WAN Technology Heng Sovannarith email@example.com Introduction A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided
Component 4: Introduction to Information and Computer Science Unit 7: Networks & Networking Lecture 1 This material was developed by Oregon Health & Science University, funded by the Department of Health
Internet Public Network Bandwidth Data rate measured in bits (not bytes) per seconds Kbps (Kilobits per seconds) 125 chars/sec Mbps (Megabits per seconds) 1,250 chars/sec Gbps (Gigabits per seconds) 12,500
Networks Networking is all about sharing information and resources. Computers connected to a network can avail of many facilities not available to standalone computers: Share a printer or a plotter among
What You Will Learn About Computers Are Your Future Chapter 8 Networks: Communicating and Sharing Resources Basic networking concepts Advantages and disadvantages of networks Peer-to-peer and client/server
VoIP Glossary Analog audio signals: Analog audio signals are used to transmit voice data over telephone lines. This is done by varying or modulating the frequency of sound waves to accurately reflect the
Overview of Network Hardware and Software CS158a Chris Pollett Jan 29, 2007. Outline Scales of Networks Protocol Hierarchies Scales of Networks Last day, we talked about broadcast versus point-to-point
CPET 581 E-Commerce & Business Technologies E-Commerce Infrastructure Lecture Note 2 of 2 References: *Chapter 3. E-Commerce Infrastructure: The Internet, Web, and Mobile Platform of text book: e-commerce:
Overview Dipl.-Ing. Peter Schrotter Institute of Communication Networks and Satellite Communications Graz University of Technology, Austria Fundamentals of Communicating over the Network Application Layer
Dear Student Here is the list of chapter sections that we will be covering for this semester. For each chapter listed in pages below: Any Bold text is required (with all the details in that sections) Any
Communication Networks MAP-TELE 2011/12 José Ruela Network basic mechanisms Introduction to Communications Networks Communications networks Communications networks are used to transport information (data)
Computer Networks Lecture 06 Connecting Networks Kuang-hua Chen Department of Library and Information Science National Taiwan University Local Area Networks (LAN) 5 kilometer IEEE 802.3 Ethernet IEEE 802.4
Study Questions Using MIS 3e Chapter 6A Appendix How the Internet Works David Kroenke Q1: How does email travel? Q2: What is a communications protocol? Q3: What are the functions of the five TCP/IP-OSI
Computers Are Your Future 2006 Prentice-Hall, Inc. Computers Are Your Future Chapter 3 Wired and Wireless Communication 2006 Prentice-Hall, Inc Slide 2 What You Will Learn... ü The definition of bandwidth
(CTNP) Syllabus Copyright This is intellectual property of ACTA S.A. and it is protected by Greek and European legislation concerning copyright. The creation of a copy of part, or of the whole, without
Overview: Network Introduction what is a computer network? digital transmission components of a computer network network hardware network software What is a computer network? an interconnected collection
Chapter 1 Review Questions R1. What is the difference between a host and an end system? List several different types of end systems. Is a Web server an end system? 1. There is no difference. Throughout
Network Design Yiannos Mylonas Physical Topologies There are two parts to the topology definition: the physical topology, which is the actual layout of the wire (media), and the logical topology, which
- Data Communication and Networks (Optional) INTRODUCTION This is one of the optional courses designed for Semester 4 of the Bachelor of Information Technology Degree program. This course on Data Communication
What s the Internet? PC server laptop cellular handheld access points wired s connected computing devices: hosts = end systems running apps communication s fiber, copper, radio transmission rate = bandwidth
The Purpose of ing CSCI 362 Computer and Security Introduction to ing Goals: Remote exchange and remote process control. A few desirable properties: Interoperability, Flexibility, Geographical range, Scalability,
Job Ready Assessment Blueprint Computer Networking Fundamentals Test Code: 4414 / Version: 01 Copyright 2011. All Rights Reserved. General Assessment Information Computer Networking Fundamentals Blueprint
The Internet and Network Technologies Don Mason Associate Director Copyright 2013 National Center for Justice and the Rule of Law All Rights Reserved Inside vs. Outside Inside the Box What the computer
Management Information Systems Basics of the Internet Dr. Shankar Sundaresan (Adapted from Introduction to IS, Rainer and Turban) Internet Basics Outline Internet History Internet Structure Switching Methods
1. Which of the following is an advantage of installing a client/server network in a business? a. decentralization of peripherals b. centralization of network security protection c. decentralization of
CN1047 INTRODUCTION TO COMPUTER NETWORKING CHAPTER 1 BASIC CONCEPTS OF NETWORK DEFINTION & APPLICATIONS DEFINTION: A computer network is defined as the interconnection of two or more computers. It is done
Competency: General Network Terminology and Concepts 1. Demonstrate knowledge of the purposes, benefits, and risks for installing a network. 2. Identify types of networks (e.g., LAN, WAN, MAN) and their
CHAPTER - 10 INTRODUCTION COMPUTER NETWORKING When two or more objects are connected they form a network. For example in our Vidyalaya all teachers form a network of teachers, all students form a network
Agenda Distributed System Structures CSCI 444/544 Operating Systems Fall 2008 Motivation Network structure Fundamental network services Sockets and ports Client/server model Remote Procedure Call (RPC)
CMSI 182 Intro to Computer Science Week 13 Tuesday B.J. Johnson Doolan 222 09:25 10:40 Where We Are: History Lesson We re here! I/O Peripherals Internet Architecture RAM/ROM Applications O/S Programs Languages
Mobile IP Network Layer Lesson 01 OSI (open systems interconnection) Seven Layer Model and Internet Protocol Layers Oxford University Press 2007. All rights reserved. 1 OSI (open systems interconnection)
Topology Star Bus Each computer connects to a central connection device. Bus Single cable connects everything. Ring Single cable configured in a ring. Information Transfer All information passes through
Deploying In-Building Wireless Solutions How enterprise, wireless service providers and building owners can better serve their employees, customers and tenants by deploying a converged in-building wireless
Computer Networks III Wide Area Networks and Packet Switching Network Protocols and the OSI Layers The Internet Internet Infrastructure 1 Wide Area Networks (recap) 2 Page 1 Basic WAN structure Host Router
Yatindra Nath Singh Assistant Professor Electrical Engineering Department Indian Institute of Technology, Kanpur Email: firstname.lastname@example.org http://home.iitk.ac.in/~ynsingh 1 What are optical network? Telecomm
Mestrado em Engenharia Informática e de Computadores PLANEAMENTO E GESTÃO DE REDES INFORMÁTICAS COMPUTER NETWORKS PLANNING AND MANAGEMENT 2008-2009 Conceitos de Redes e Arquitecturas - Networks and Architectures
CSCI 491-01 Topics: Internet Programming Fall 2008 Introduction Derek Leonard Hendrix College September 3, 2008 Original slides copyright 1996-2007 J.F Kurose and K.W. Ross 1 Chapter 1: Introduction Our
Networking 101 (Networking Basics) Presentation to UCHUG - 1/03/07 G. Skalka What is a network? A computer network is two or more computers connected together using a telecommunication system for the purpose
ET225 Networking Concepts Chapter 1 What is a Computer Network? Objectives Identify the advantages of connecting computers and devices on a network. Recognize common network components in a lab setting.
Computer Networks CS321 Dr. Ramana I.I.T Jodhpur Dr. Ramana ( I.I.T Jodhpur ) Computer Networks CS321 1 / 22 Outline of the Lectures 1 Introduction OSI Reference Model Internet Protocol Performance Metrics
Candidates should be able to: a. Explain the advantages of networking stand-alone computers into a LAN b. Describe H/W needed to connect stand-alone computers into a LAN, including hub/switches, wireless