1 / 31

Networking Fundamentals

Networking Fundamentals. Introduction and OSI model. Introduction. Classifications. Classifications. LAN Local Area Network WAN Wide Area Network PAN Personal Area Network MAN Metropolitan Area Network. Introduction. Topologies. Topologies. Bus Star Ring Mesh Wireless

selena
Télécharger la présentation

Networking Fundamentals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Networking Fundamentals Introduction and OSI model

  2. Introduction Classifications

  3. Classifications • LAN • Local Area Network • WAN • Wide Area Network • PAN • Personal Area Network • MAN • Metropolitan Area Network

  4. Introduction Topologies

  5. Topologies • Bus • Star • Ring • Mesh • Wireless • Hybrid

  6. Introduction Network Models

  7. Network Models • Client/Server • Peer-to-Peer

  8. Introduction Protocols

  9. Protocols • TCP/IP • FIR • ATM • LLDP • NetBIOS & NetBEUI

  10. Introduction Devices

  11. Devices • Media / Converters • NIC • Network Interface Card • Repeater • Hub • Gateway • Bridge • Switch • Router

  12. Hub • Physical Layer • Box with lots of Ethernet connection sockets • Repeats messages to all connected nodes • Generates wasted traffic • Nodes must filter messages intended for them • Cheapest way to connect devices

  13. Bridge • Data Link Layer • Single incoming and outgoing ports • Keeps MAC address tables for two LAN segments • Filters traffic using the MAC address

  14. Switch • Connects all nodes to each other like a hub • Examines Ethernet messages for destination MAC address • Intelligently relays messages toward destination • More expensive than hubs • Can be combined with hubs

  15. Router • Network Layer • A router connects to two different networks Ex: LAN to WAN (internet) • Routers maintain a so-called routing table to keep track of routes • Without routers the internet could not function • Uses the IP address to forward packets

  16. Gateway • Application Layer down to network layer • Connect and translate data between networks with different protocols or architecture • For instance, allowing communication between TCP/IP clients and IPX/SPX or AppleTalk • A gateway links two systems that do not use the same: • Communication protocols • Data formatting structures • Languages • Architecture

  17. Introduction Standards Groups

  18. Standards Groups • IEEE • ISO • W3C • CERN • UL • EIA • TIA • ANSI

  19. Standards Groups • IEEE Institute of Electrical and Electronics Engineers • ISO International Organization for Standardization • W3C World Wide Web Consortium • CERN European Organization for Nuclear Research • UL Underwriters Laboratories • EIA Energy Information Administration • TIA Telecommunications Industry Association • ANSI American National Standards Institute

  20. Introduction OSI MODEL

  21. OSI MODEL • Application • Presentation • Session • Transport • Network • Data Link • Physical Mnemonics to Remember Top Down: A Perfectly Simple Technology Narrowed Down Physically All People Seem To Need Data Processing All Pros Search Top Notch Donut Places Bottom Up: Programmers Like Networks That Seldom Postpone Anything* Programmers Dare Not Throw Salty Pretzels Away Please Do Not Throw Sausage Pizza Away Please Do Not Tell Sales People Anything People Don’t Need To See Paula Abdul People Desperately Need To See Pamela Anderson Paula Did Networking 'TilShe Passed Away * Uses L for Link layer rather than D for Data Link

More Related