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Network Devices

Chapter 6. Network Devices. The network interface card. NIC or Network Adapter. This device provides the physical, electrical, and electronic connec-tions to the network media NIC connects to the computer through expansion slots or built in to the motherboard of the computer Features

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Network Devices

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  1. Chapter 6 Network Devices

  2. The network interface card • NIC or Network Adapter www.themegallery.com

  3. This device provides the physical, electrical, and electronic connec-tions to the network media • NIC connects to the computer through expansion slotsor built in to the motherboard of the computer • Features • Data transmission network • Sends data to another computer in the form of bits 0 and 1. • Control data flow between computer and cable systems • Equipment is operating at the physical layer

  4. HUB

  5. Features • Any transmission received on one port will be rebroadcast to all the other ports in the hub. • Equipment is operating at the physical layer

  6. Switch

  7. Connects multiple segments of a network together. • Rebroadcasts anything it receives on one port to all the others. • The benefit of a switch over a hub is that the switch increases performance because it doesn’t suffer from the wasted bandwidth of the extra transmissions.

  8. Bridge

  9. Bridge • Network device that connects two similar network segments together. • The primary function of a bridge is to keep traffic separated on both sides of the bridge.

  10. Router

  11. Example for VPN • Virtual: Information within a private network is transported over a public network. • Private: The traffic is encrypted to keep the data confidential.

  12. Features • A network device that connects multiple, often dissimilar, network segments into an internetwork. • Can make intelligent decisions about how best to get network data to its destination

  13. Gateways

  14. Gateway allow connection types protocols together • For example: • Network of you use protocol IP Network and other network use a protocol IPX, Novell, DECnet, SNA ... or any protocol that you will Gateway convert from this type protocol to them “talk” together.

  15. MODEMS • MODEM – MOdulation-DEModulation

  16. MODEMS • A modem is a device that changes digital data into an analog form for transmission over an analog medium and then back to digital again at the receiving end.

  17. CSU/DSUs

  18. CSU/DSUs

  19. The Channel Service Unit/Data Service Unit (CSU/DSU) is a common device found in equipment rooms when the network is connected via a T-series data connection

  20. www.themegallery.com ____ __

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