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Understanding Networking Components

Understanding Networking Components. A Beginner’s Guide. LTEC 4550 Jeff Spradlin Fall 2013. A World of Network Devices. Some have exclusive purposes Some may have seen their functions integrated Discrete and Individual Units. What it does. Network Hub.

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Understanding Networking Components

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  1. Understanding Networking Components A Beginner’s Guide LTEC 4550 Jeff Spradlin Fall 2013

  2. A World of Network Devices • Some have exclusive purposes • Some may have seen their functions integrated • Discrete and Individual Units

  3. What it does. Network Hub • Takes a signal and repeats it across all other ports on the device. • Most hubs do not screen for error or collisions. Source: http://www.automation-drive.com/ethernet-hubs

  4. What it Connects to. Network Hub • Ethernet • Multiple computers in a collision domain Source: http://www.automation-drive.com/ethernet-hubs Where it’s Used. Actual Retail Price: $24-$69 • Smaller, cheaper, older networks • Single-direction connections

  5. What it does. Switch • Connects messages between units • Builds a working topology • Learns about its environment Source: http://snpi.dell.com/snp/images/products/large/A4527470.JPG

  6. What it Connects to. Switch • Different Network Segments • Different Types of Networks and Mediums Source: http://snpi.dell.com/snp/images/products/large/A4527470.JPG Where it’s Used. Actual Retail Price: $107-$189 • Home and Office Networks • Effective for two-way communication

  7. What it does. Router • Directs Traffic on a Network • Prioritizes Based on Protocol • Forwards Messages Source: http://www.teqlog.com/wp-content/uploads/2012/02/Router.jpg

  8. What it Connects to. Router • Different End-Units or Segments • Other Routers • Switches or the Gateway Where it’s Used. Source: http://www.teqlog.com/wp-content/uploads/2012/02/Router.jpg Actual Retail Price: $62-$1,100 • Everywhere. • Seriously, Everywhere. • Isolates Collision Domains

  9. What it does. Bridge • Routes between groups and segments • Uses MAC addressing for routing Source: http://www.crownaudio.com/media/storagebk/pressart/pr110_hz.jpg

  10. Bridge What it Connects to. • Network segments via Ethernet Source: http://www.crownaudio.com/media/storagebk/pressart/pr110_hz.jpg Where it’s Used. Actual Retail Price: $51-$2,900 • Spanning tree networks

  11. What it does. Gateway • Connects a LAN to a wider Network • Can act as the last stop before the Internet Source: http://www.linksz.net/images/ROIP-102.jpg

  12. What it Connects to. Gateway • Any other network device • Can interface with multiple protocols Source: Source: http://www.linksz.net/images/ROIP-102.jpg Where it’s Used. • May be integrated with Routers • Used as a network Firewall • Manage traffic in and out of Domain • Maintain DNS Actual Retail Price: $34-$32,000

  13. What it does. Firewall • Protects Networks • External • Internal • Limits or blocks traffic Source: http://www.64bit.eu/galerie/3490/Juniper%20SRX%20650%20gateway%20firewall%202%20GB%20right%20angle%20view-gallery_pop.jpg

  14. What it Connects to. Firewall • Physical port protection • Last Stop-Gap • LANs, WANs and MANs Source: http://www.64bit.eu/galerie/3490/Juniper%20SRX%20650%20gateway%20firewall%202%20GB%20right%20angle%20view-gallery_pop.jpg Where it’s Used. Actual Retail Price: $0-$263,000 • Hopefully everywhere • Home computing • Small business • Enterprise-level framework

  15. What it does. Wireless Access Point • Converts wired connections to wireless • Direct connection • Relay for existing signal Source: http://www.bcsconsultants.com/mthosts/sequoia/bcs/media/images/WAP121.jpg

  16. What it Connects to. Wireless Access Point • May be integrated • Connect to: • Ethernet • Coaxial • Fiber optic • Transmits/receives • 2.4 and 5 GHz Source: http://www.bcsconsultants.com/mthosts/sequoia/bcs/media/images/WAP121.jpg Where it’s Used. • Home Office • Large-campuses • Anywhere cellular doesn’t reach • Underground • Buildings • Moria Actual Retail Price: $63-$13,000

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