Every day millions of people exchange information through the Internet - but what exactly is the Internet? The Internet is a worldwide collection of
|
|
- Alexia Cain
- 7 years ago
- Views:
Transcription
1
2 Every day millions of people exchange information through the Internet - but what exactly is the Internet? The Internet is a worldwide collection of computer networks, cooperating with each other to exchange information using common standards. Through telephone wires, fiber optic cables, wireless transmissions and satellite links, Internet users can exchange information in a variety of forms. The Internet is a network of networks that connects users in every country in the world. There are currently over one billion Internet users worldwide.
3 Any home, business or organization that wants to connect to the Internet must use an Internet Service Provider (ISP). An ISP is a company that provides the connections and support to access the Internet. It can also provide additional services such as and web hosting. ISPs range in size from small to very large and differ in terms of the area they service. ISPs may provide limited services to a small geographical area or can have a wide variety of services and support entire countries with millions of customers. ISPs also differ in the types of connection technologies and speeds they offer. Examples of well known ISPs include AOL, EarthLink, and Roadrunner.
4 Individual computers and local networks connect to the ISP at a Point of Presence (POP). A POP is the connection point between the ISP's network and the particular geographical region that the POP is servicing. An ISP may have many Pops depending on its size and the area it services. Within an ISP, a network of high-speed routers and switches move data between the various Pops. Multiple links interconnect the Pops to provide alternate routes for the data should one link fail or become overloaded with traffic and congested.
5 ISPs connect to other ISPs in order to send information beyond the boundaries of their own network. The Internet is made up of very highspeed data links that interconnect ISP Pops and ISPs to each other. These interconnections are part of the very large, high capacity network known as the Internet Backbone. Connecting to the ISP at the POP provides users with access to the ISP's services and the Internet.
6
7 Ps provide a variety of ways to connect to the Internet, depending on location and desired connection speed. In a major city there are typically more choices for ISPs and more connection options than in a rural area. For example, cable Internet access is only available in certain metropolitan areas where cable TV service is available. Remote areas may only have access via dial-up or satellite. Each Internet access technology uses a network access device, such as a modem, in order to connect to the ISP. It may be built in to your computer or may be provided by the ISP.
8
9
10 Depending on the ISP and the connection technology, various services are available such as virus scanning, video on demand, and file storage. The contract with the ISP determines the type and level of services that are available. Most ISPs offer two different contract levels: home service or business class service. Home service is normally less expensive than business services, and generally provides scaled-down services such as slower connection speed, reduced web space storage, and fewer accounts. A typical home account may include a minimum of five addresses with additional addresses being available for a fee.
11 Asymmetric: Most commonly used for the home. Download speeds are faster than upload speeds. Necessary for users that download significantly more than upload. Most Internet users, especially those who use graphics or multimedia intensive web data, need lots of download bandwidth.
12 Symmetric: Most commonly used for business or individuals hosting servers on the Internet. Used when necessary to upload large amounts of traffic such as intensive graphics, multimedia, or video. It can carry large amounts of data in both directions at equal rates.
13 For hosts to communicate on the Internet, they must be running Internet Protocol (IP) software. The IP protocol is one of a group of protocols that are collectively referred to as TCP/IP (Transmission Control Protocol / Internet Protocol). The Internet Protocol (IP) uses packets to carry data Each IP packet must contain a valid source and destination IP address. Without valid address information, packets sent will not reach the destination host. Return packets will not make it back to the original source.
14 An IP packet has a header at the beginning which contains the source and destination IP addresses. It also contains control information that describes the packet to network devices, such as routers, it passes through and also helps to control its behavior on the network. The IP packet is sometimes referred to as a datagram. IP addresses must be unique on the Internet. There are organizations responsible for controlling the distribution of IP addresses so that there is no duplication. ISPs obtain blocks of IP addresses from a local, national or regional Internet registry (RIR). It is the responsibly of the ISPs to manage these addresses and assign them to end users.
15 Before being sent on the Internet, messages are divided into packets. IP packet size is between 64 to 1500 bytes for Ethernet networks, and contains mostly user data. Downloading a single 1 MB song would require over 600 packets of 1500 bytes. Each individual packet must have a source and destination IP address. When a packet is sent across the Internet, the ISP determines whether the packet is destined for a local service located on the ISP network, or a remote service located on a different network. Every ISP has a control facility for their network, known as the Network Operations Center (NOC). The NOC usually controls traffic flow and houses services such as emai and web hosting
16 A diagram that shows all network devices and their interconnections would be very complex. Additionally, the final routing path between source and destination is not usually important, only that the source is able to communicate with the destination. Therefore, in network diagrams a cloud is often used to represent the Internet or any other complex network,
17 Devices that provide connectivity to end-users must match the technology used by the end-user to connect to the ISP. For example, if the end-user is using DSL technology to connect, the ISP must have a DSL Access Multiplexer (DSLAM) to accept these connections. For cable modems to connect, the ISP must have a Cable Modem Termination System (CMTS). Some ISPs still accept analog calls through modems and have banks of modems to support these users. ISPs that provide wireless access have wireless bridging equipment.
18 Common Network Cables
19
20
21
22 Cabling standards are a set of specifications for the installation and testing of cables. Standards specify types of cables to use in specific environments, conductor materials, pinouts, wire sizes, shielding, cable lengths, connector types and performance limits.
23 Twisted pair cable is most commonly used in network installations. The TIA/EIA organization defines two different patterns, or wiring scheme, called T568A and T568B. Each wiring scheme defines the pinout, or order of wire connections, on the end of the cable. EMI
24
25 UTP and STP cable is usually terminated into an RJ-45 connector The RJ-45 jack has eight conductors, and is wired according to either T568A or T568B. At the patch panel a device known as a punchdown tool is required to push the wires into the connector. The wires should be matched up to the appropriate insulation displacement connector (IDC) by color before punching them down. The punchdown tool also cuts off any excess wire. A punchdown tool is not required to terminate most wall jacks. To terminate these connectors the cables are untwisted and placed into the appropriate IDC. Placing the cap on the jack pushes the cables into the IDC and cuts through the insulation on the wires.
26
27 The cable tester is used to perform initial diagnostics. The first test usually is called a continuity test and it verifies that there is end-to-end connectivity. It can also detect common cabling faults such as opens and shorts.
28 Crosstalk is the leakage of signals between pairs. If this is measured near the transmitting end it is termed near-end crosstalk (NEXT). If measured at the receiving end of the cable it is termed far-end crosstalk (FEXT). Both forms of crosstalk degrade network performance and are often caused by untwisting too much cable when terminating.
CCNA Discovery Chapter Four
CCNA Discovery Chapter Four By Chief Eng. Amna Ahmed Institute of Telecommunication amna_ahmed28@yahoo.com Modified by Vincenzo Bruno Hacklab Cosenza Chapter 4 Explain what the internet is Every day millions
More informationChapter 4 Connecting to the Internet through an ISP
Chapter 4 Connecting to the Internet through an ISP 1. According to Cisco what two things are essential to gaining access to the internet? a. ISPs are essential to gaining access to the Internet. b. No
More informationChapter 5. Data Communication And Internet Technology
Chapter 5 Data Communication And Internet Technology Purpose Understand the fundamental networking concepts Agenda Network Concepts Communication Protocol TCP/IP-OSI Architecture Network Types LAN WAN
More informationADSL or Asymmetric Digital Subscriber Line. Backbone. Bandwidth. Bit. Bits Per Second or bps
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
More informationChapter 9A. Network Definition. The Uses of a Network. Network Basics
Chapter 9A Network Basics 1 Network Definition Set of technologies that connects computers Allows communication and collaboration between users 2 The Uses of a Network Simultaneous access to data Data
More information428 MY HOME Structured cabling system for the home sector
428 MY HOME Structured cabling system for the home sector CONTENTS MY HOME Structured cabling system for the home sector General features. 384 General rules for installation. 400 Wiring diagrams. 404 Structured
More informationCTS2134 Introduction to Networking. Module 07: Wide Area Networks
CTS2134 Introduction to Networking Module 07: Wide Area Networks WAN cloud Central Office (CO) Local loop WAN components Demarcation point (demarc) Consumer Premises Equipment (CPE) Channel Service Unit/Data
More informationFuture Stars. Grade X Manual Chapter 1 Networking and Telecommunication. telecommunication. Telephones, telegrams, radios and televisions help
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.
More informationNetwork+ Guide to Networks 6 th Edition. Chapter 7 Wide Area Networks
Network+ Guide to Networks 6 th Edition Chapter 7 Wide Area Networks Objectives Identify a variety of uses for WANs Explain different WAN topologies, including their advantages and disadvantages Compare
More informationNetwork Design. Yiannos Mylonas
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
More informationTelecommunications systems (Part 2)
School of Business Eastern Illinois University Telecommunications systems (Part 2) Abdou Illia, Spring 2007 (Week 12, Thursday 3/29/2007) T-1 Digital Subscriber Line (DSL) Cellular Telephone System Integrated
More informationIntroduction to computer networks and Cloud Computing
Introduction to computer networks and Cloud Computing Aniel Nieves-González Fall 2015 Computer Netwoks A computer network is a set of independent computer systems that are connected by a communication
More informationCMPT 165: The Internet, Part 3
CMPT 165: The Internet, Part 3 Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University September 15, 2011 1 Basic Communication Technology Packet Switching (sharing a tranmission
More informationR2. The word protocol is often used to describe diplomatic relations. How does Wikipedia describe diplomatic protocol?
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
More informationBroadband 101: Installation and Testing
Broadband 101: Installation and Testing Fanny Mlinarsky Introduction Today the Internet is an information superhighway with bottlenecks at every exit. These congested exits call for the deployment of broadband
More informationComponent 4: Introduction to Information and Computer Science
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
More informationStudy Guide CompTIA A+ Certification, Domain 2 Networking
Study Guide CompTIA A+ Certification, Domain 2 Networking Brought to you by RMRoberts.com Introduction to CSR Domain - 2 (220-801) The CompTIA A+ 220-801 Domain 2 Networking has expanded a lot since the
More informationThe Internet and Its Uses
CHAPTER 1 The Internet and Its Uses Objectives After completing this chapter, you should be able to answer the following questions: How is the Internet evolving? How do businesses and individuals use the
More informationChapter 2 TCP/IP Networking Basics
Chapter 2 TCP/IP Networking Basics A network in your home or small business uses the same type of TCP/IP networking that is used for the Internet. This manual provides an overview of IP (Internet Protocol)
More informationAdvanced Higher Computing. Computer Networks. Homework Sheets
Advanced Higher Computing Computer Networks Homework Sheets Topic : Network Protocols and Standards. Name the organisation responsible for setting international standards and explain why network standards
More information11/22/2013 1. komwut@siit
11/22/2013 1 Week3-4 Point-to-Point, LAN, WAN Review 11/22/2013 2 What will you learn? Representatives for Point-to-Point Network LAN Wired Ethernet Wireless Ethernet WAN ATM (Asynchronous Transfer Mode)
More informationNetworking 101 (Networking Basics) Presentation to UCHUG - 1/03/07 G. Skalka
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
More informationADSL BROADBAND BASICS FOR THE DOMESTIC USER. The Main Limitations of ADSL Broadband are as follows.
ADSL BROADBAND BASICS FOR THE DOMESTIC USER AS NOTHING MAN MADE IS PERFECT, ADSL IS NOT AN EXCEPTION. The Main Limitations of ADSL Broadband are as follows. 1. ADSL is not a Guaranteed Bandwidth Service.
More information1.264 Lecture 34. Telecom: Connecting wired LAN, WAN. Next class: Green chapter 17. Exercise due before class
1.264 Lecture 34 Telecom: Connecting wired LAN, WAN Next class: Green chapter 17. Exercise due before class 1 Exercise Your transportation brokerage company also handles billing for freight shipments,
More informationPage 1 of 7. Computer Networking
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
More informationFree wifi in the TRA halls and faster mobile access
Free wifi in the TRA halls and faster mobile access Glossary of Telecommunications terms 2G 2G is a digital mobile communications standard allowing for voice calls and limited data transmission. 2G refers
More informationInternet Public Network
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
More informationPLANEAMENTO E GESTÃO DE REDES INFORMÁTICAS COMPUTER NETWORKS PLANNING AND MANAGEMENT 2008-2009
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
More informationAppendix B Network, Routing, Firewall, and Basics
Appendix B Network, Routing, Firewall, and Basics This chapter provides an overview of IP networks, routing, and networking. Related Publications As you read this document, you may be directed to various
More informationTelecommunications, Networks, and Wireless Computing
Objectives Telecommunications, Networks, and Wireless Computing 1. What are the features of a contemporary corporate telecommunications system? On what major technology developments are they based? 2.
More information1 Which network type is a specifically designed configuration of computers and other devices located within a confined area? A Peer-to-peer network
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
More information3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET
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
More informationNetworks. The two main network types are: Peer networks
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
More informationINTERNET CONNECTIVITY
INTERNET CONNECTIVITY http://www.tutorialspoint.com/internet_technologies/internet_connectivity.htm Copyright tutorialspoint.com Here in this tutorial, we will discuss how to connect to internet i.e. internet
More informationComputers Are Your Future. 2006 Prentice-Hall, Inc.
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
More informationBroadband Primer. A Guide to High Speed Internet Technologies. Indiana Office of Utility Consumer Counselor
Broadband Primer A Guide to High Speed Internet Technologies Indiana Office of Utility Consumer Counselor 100 N. Senate Av., Room N501 Indianapolis, IN 46204-2215 www.openlines.in.gov toll-free: 1-888-441-2494
More informationCSCI 491-01 Topics: Internet Programming Fall 2008
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
More informationIntroduction to ADSL. NEXTEP Broadband White Paper. Broadband Networks Group. A primer on Asymmetric Digital Subscriber Line transmission technology.
NEXTEP Broadband White Paper Introduction to ADSL A primer on Asymmetric Digital Subscriber Line transmission technology. A NEXTEP Broadband White Paper May 2001 Broadband Networks Group Introduction to
More informationChapter 8: Computer Networking. AIMS The aim of this chapter is to give a brief introduction to computer networking.
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:
More informationCompTIA Network+ (Exam N10-005)
CompTIA Network+ (Exam N10-005) Length: Location: Language(s): Audience(s): Level: Vendor: Type: Delivery Method: 5 Days 182, Broadway, Newmarket, Auckland English, Entry Level IT Professionals Intermediate
More informationChapter 1 Instructor Version
Name Date Objectives: Instructor Version Explain how multiple networks are used in everyday life. Explain the topologies and devices used in a small to medium-sized business network. Explain the basic
More informationIS Network Services Senior Facilities Management Group 2 Hill Farms West Division of State Facilities
POSITION SUMMARY Under the general supervision of the DOA/DSF and the DSF Telecom Supervisor, this position works closely with other Agency Telecom Services, Voice Services, Network Services, and Wide
More informationEthernet Patch Cord Wiring
Ethernet Patch Cord Wiring C ONTENTS Ethernet Patch Cords & RJ-45 Connectors... 2 Ethernet Patch Cords and UTP Cabling... 3 What s all the twisting about?... 4 Ethernet Applications... 5 568A & 568B Wiring
More informationTAXONOMY OF TELECOM TERMS
TAXONOMY OF TELECOM TERMS Prepared by TUFF Ltd This short taxonomy is designed to describe the various terms used in today s telecommunications industry. It is not intended to be all embracing but to describe
More informationWAN Data Link Protocols
WAN Data Link Protocols In addition to Physical layer devices, WANs require Data Link layer protocols to establish the link across the communication line from the sending to the receiving device. 1 Data
More informationPublic Network. 1. Relatively long physical distance 2. Requiring a service provider (carrier) Branch Office. Home. Private Network.
Introduction to LAN TDC 363 Week 4 Connecting LAN to WAN Book: Chapter 7 1 Outline Wide Area Network (WAN): definition WAN Topologies Choices of WAN technologies Dial-up ISDN T1 Frame Relay DSL Remote
More informationAppendix A: Basic network architecture
Appendix A: Basic network architecture TELECOMMUNICATIONS LOCAL ACCESS NETWORKS Traditionally, telecommunications networks are classified as either fixed or mobile, based on the degree of mobility afforded
More information2. What is the maximum value of each octet in an IP address? A. 128 B. 255 C. 256 D. None of the above
1. How many bits are in an IP address? A. 16 B. 32 C. 64 2. What is the maximum value of each octet in an IP address? A. 128 B. 255 C. 256 3. The network number plays what part in an IP address? A. It
More informationGetting Broadband. FCC Consumer Facts. What Is Broadband?
Getting Broadband FCC Consumer Facts What Is Broadband? Broadband or high-speed Internet access allows users to access the Internet and Internetrelated services at significantly higher speeds than those
More informationNetworks 2. Gabriela Ochoa. 2014 University of Stirling CSCU9B1 Essential Skills for the Information Age. Content
Networks 2 Gabriela Ochoa Lecture Networks 2/Slide 1 Content How is Internet connected? Internet backbone Internet service providers (ISP) How to connect a home computer to the Internet? How do networks
More informationInternet Service Overview
Internet Service Overview This article contains information about: Internet Service Provider Networks Digital Subscriber Line (DSL) Cable Internet Fiber Internet Wireless/WIMAX Cellular/Wireless Satellite
More informationLocal-Area Network -LAN
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
More informationHow To Get High Speed Internet In Australia
ADSL vs Cable Cable subscribers are connected directly to high speed lines while ADSL subscribers are connected directly to medium speed lines Cable subscribers share the line connecting them to neighbourhood
More informationHow to Choose the Right Cable Category
How to Choose the Right Cable Category Why do I need a different category of cable? Not too long ago, when local area networks were being designed, each work area outlet typically consisted of one Category
More informationThings You Must Know About Gigabit Ethernet 1. Understanding Gigabit Ethernet
Things You Must Know About Gigabit Ethernet 1. Understanding Gigabit Ethernet Today s network managers know that modern demands on a network by its users can shrink bandwidth dramatically. Faster computers,
More informationSHEET 5 CABLE TELEVISION SYSTEM
SHEET 5 CABLE TELEVISION SYSTEM TRADITIONAL TELEVISION AND IPTV INTRODUCTION Access to full digital, as an inevitable technological development, clearly demonstrates the place of Digital Communication
More informationVoice and Delivery Data Networks
Voice and Delivery Data Networks Chapter 11 Learning Objectives After reading this chapter, you should be able to: Identify the basic elements of a telephone system Describe the composition of the telephone
More informationThe OSI Model: Understanding the Seven Layers of Computer Networks
Expert Reference Series of White Papers The OSI Model: Understanding the Seven Layers of Computer Networks 1-800-COURSES www.globalknowledge.com The OSI Model: Understanding the Seven Layers of Computer
More informationChapter 6. By Frankie, K. F. Yip MSN: frankie.sir@live.com Email: ask.frankie@gmail.com Facebook: register.frankie@gmail.com
Chapter 6 The Internet By Frankie, K. F. Yip MSN: frankie.sir@live.com Email: ask.frankie@gmail.com Facebook: register.frankie@gmail.com 6 Background The ARPANET, created in 1969, connected computers at
More informationMathatma Gandhi University
Mathatma Gandhi University BSc Computer Science IV th semester BCS 402 Computer Network &Internet MULTIPLE CHOICE QUESTIONS 1. The computer network is A) Network computer with cable B) Network computer
More informationAnalysis of xdsl Technologies
International Journal of Electronics and Computer Science Engineering 897 Available Online at www.ijecse.org ISSN- 2277-1956 Analysis of xdsl Technologies Dimple Saproo 1, Megha Goyal 2, Asha Bhagashra
More informationNetwork Technologies
Network Technologies Telephone Networks IP Networks ATM Networks Three Network Technologies Telephone Network The largest worldwide computer network, specialized for voice ing technique: Circuit-switching
More informationVoIP Glossary. Client (Softphone client): The software installed in the userâ s computer to make calls over the Internet.
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
More information5.3.1.9 Digital Subscriber Line (DSL) Requirements
UCR 2008, Change 2, Modification #2 provides (DSL) requirements. Section 5.3.1 was modified to reflect this change. Corrections to UCR 2008, Change 2, made by Modification # 2 SECTION NEW Requirements
More informationUniversal Network Access Policy
Universal Network Access Policy Purpose Poynton Workmens Club makes extensive use of network ed Information Technology resources to support its research and administration functions and provides a variety
More informationWritten examination in Computer Networks
Written examination in Computer Networks February 14th 2014 Last name: First name: Student number: Provide on all sheets (including the cover sheet) your last name, rst name and student number. Use the
More informationIP Networking. Overview. Networks Impact Daily Life. IP Networking - Part 1. How Networks Impact Daily Life. How Networks Impact Daily Life
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
More informationChapter 7: Computer Networks, the Internet, and the World Wide Web. Invitation to Computer Science, C++ Version, Third Edition
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
More informationThe Evolution of Copper Cabling Systems from Cat5 to Cat5e to Cat6 Copper Cabling Standards and Technical Aspects
The Evolution of Copper Cabling Systems from Cat5 to Cat5e to Cat6 Copper Cabling Standards and Technical Aspects White Paper /7/0 Executive Summary Now that the TIA/EIA-568-B.- Category 6 Copper Cabling
More informationActerna DSL Services Tester TPI 350+ Application Highlights
Acterna TPI 350+ DSL Test Set Product Highlights Field engineered, rugged construction, lightweight design, and batterypowered operation Automated testing capabilities minimize training costs and testing
More informationComputer Networking Networks
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
More informationWAN Technology. Heng Sovannarith heng_sovannarith@yahoo.com
WAN Technology Heng Sovannarith heng_sovannarith@yahoo.com Introduction A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided
More informationIntel System Engineers Documents. DSL General Overview
Intel System Engineers Documents DSL General Overview Alex Lattanzi SC LAR Whatt IIs Brroadband? Broadband describes a number of different technologies that deliver digital data to homes and businesses
More informationChapter 9. Internet. Copyright 2011 John Wiley & Sons, Inc 10-1
Chapter 9 Internet Copyright 2011 John Wiley & Sons, Inc 10-1 Outline 9.2 - How the Internet Works - Basic Architecture - Connecting to an ISP - Internet Today 9.3 - Internet Access Technologies - DSL
More informationcontents my HOmE - STrUCTUrEd CaBLing SYSTEm FOr THE HOmE SECTOr
contents my HOmE Structured cabling system for the home sector general features...................... 38 general rules for installation.............. 00 Wiring diagrams...................... 0 my HOmE
More informationCloud4 User Guide Reliable connectivity for the cloud from Cloud4
Cloud4 User Guide Reliable connectivity for the cloud from Cloud4 Choosing the right broadband for your business If you ve ever shopped around for a good broadband deal for your home then you might have
More informationResidential Broadband: Technologies for High-Speed Access To Homes
Residential Broadband: Technologies for High-Speed Access To Homes The Ohio State University Columbus, OH 43210-1277 1277 http://www.cse.ohio-state.edu/~jain/ 1 Overview 56 kbps Modems, ISDN ADSL, VDSL
More informationGigabit Ethernet on Copper Cabling Infrastructures
Gigabit Ethernet on Copper Cabling Infrastructures Overview of Gigabit Ethernet (1000Base-T) Ethernet was developed by the Xerox Corporation in the early 1970 s and has emerged as the dominant networking
More informationCommunication Networks. MAP-TELE 2011/12 José Ruela
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)
More informationESSENTIALS. Understanding Ethernet Switches and Routers. April 2011 VOLUME 3 ISSUE 1 A TECHNICAL SUPPLEMENT TO CONTROL NETWORK
VOLUME 3 ISSUE 1 A TECHNICAL SUPPLEMENT TO CONTROL NETWORK Contemporary Control Systems, Inc. Understanding Ethernet Switches and Routers This extended article was based on a two-part article that was
More informationChristopher Rathgeb ECE 453 Dr. Qi 9/19/2006. Task 1: Make an Ethernet cable yourself.
Task 1: Make an Ethernet cable yourself. Christopher Rathgeb ECE 453 Dr. Qi 9/19/2006 You are required to make the cable within 20-minute period of time in FH422 (the networking lab). The TA will be there
More informationBASIC ANALYSIS OF TCP/IP NETWORKS
BASIC ANALYSIS OF TCP/IP NETWORKS INTRODUCTION Communication analysis provides powerful tool for maintenance, performance monitoring, attack detection, and problems fixing in computer networks. Today networks
More informationThe Conversion Technology Experts. Media Conversion: Cost-Effectively Integrating T1 into your Fiber Network
The Conversion Technology Experts Media Conversion: Cost-Effectively Integrating T1 into your Fiber Network Media Conversion: Cost Effectively Integrating T1 into Your Fiber Network Revealing some simple
More informationCN1047 INTRODUCTION TO COMPUTER NETWORKING CHAPTER 1 BASIC CONCEPTS OF NETWORK
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
More informationXDSL and DSLAM Access Technologies
XDSL and DSLAM Access Technologies Abstract What are the differences between the different forms of xdsl technology, such as ADSL and HDSL? How are they implemented. What are the limitations? What are
More informationProtocol Data Units and Encapsulation
Chapter 2: Communicating over the 51 Protocol Units and Encapsulation For application data to travel uncorrupted from one host to another, header (or control data), which contains control and addressing
More informationNetwork Simulation Traffic, Paths and Impairment
Network Simulation Traffic, Paths and Impairment Summary Network simulation software and hardware appliances can emulate networks and network hardware. Wide Area Network (WAN) emulation, by simulating
More informationComputer Networks and the Internet
? Computer the IMT2431 - Data Communication and Network Security January 7, 2008 ? Teachers are Lasse Øverlier and http://www.hig.no/~erikh Lectures and Lab in A126/A115 Course webpage http://www.hig.no/imt/in/emnesider/imt2431
More informationIntroduction cont. Some Structure in the Chaos. Packet switching versus circuit switching. Access networks and physical media
Introduction cont. Some Structure in the Chaos Lecture goal: get context, overview, feel of ing more depth, detail later in course approach: o descriptive o use Internet as example Overview: access net,
More informationIntroduction to Computer Networks and Data Communications
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
More informationVirtual Leased Line (VLL) for Enterprise to Branch Office Communications
Virtual Leased Line (VLL) for Enterprise to Branch Office Communications Reliable high throughput data connections with low-cost & diverse transport technologies Executive Summary: The Truffle Broadband
More informationThink! Think! Data communications. Long-Distance. Modems: to analog and back. Transmission Media. The last mile is the hardest for digital information
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
More informationIntroduction to Computer
PDHonline Course E175 (8 PDH) Introduction to Computer Instructor: Dale W. Callahan, Ph.D., P.E. and Lea B. Callahan, P.E. 2012 PDH Online PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone
More informationWireless Links - Wireless communication relies on radio signals or infrared signals for transmitting data.
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
More informationThis paper will explain some of the more important factors on how UTP wires work; specifically it will cover the following:
UTP Technology In the late 1970s, unshielded twisted pair (UTP) cabling originated in the computer industry as a means of transmitting digital data over computer networks. This cable was designed to be
More informationResidential Broadband: Technologies for High-Speed Access To Homes
Residential Broadband: Technologies for High-Speed Access To Homes Columbus, OH 43210 Jain@CIS.Ohio-State.Edu http://www.cis.ohio-state.edu/~jain/cis788-97/ Email questions to mbone@netlab.ohio-state.edu
More informationDIVISION 26 - ELECTRICAL SECTION 26 05 20 CABLES FOR INSTRUMENTATION
DIVISION 26 - ELECTRICAL PART 1 - GENERAL 1.01 SUMMARY A. Section Includes 1. Instrumentation Cables 1.02 SUBMITTALS A. Submit in accordance with requirements of Section 01 33 00. B. Product Data: Submit
More informationThe Internet and Network Technologies
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
More informationThe part of the network that connects customers to the exchange, sometimes called the local loop or the last mile.
Glossary of broadband terms 3G: Refers to the third generation of mobile phone technology following on from 2G. 3G allows for faster access to the internet and allows services including video calls and
More informationModel 2120 Single Port RS-232 Terminal Server Frequently Asked Questions
Applications What are some of the applications for the Model 2120 Single Port Terminal Server? The Patton Single Port RS-232 Terminal Server provides the ability to bring virtually any RS-232 device onto
More information