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Diploma in Information Technology

Diploma in Information Technology. Principles of Information Systems and Data Management Classroom Local Area Network & Internet. Network Diagrams. Components. Firewall Router Core Switch Distribution Switch Access Switch Cables. Firewall.

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Diploma in Information Technology

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  1. Diploma in Information Technology Principles of Information Systems and Data Management Classroom Local Area Network & Internet

  2. Network Diagrams

  3. Components • Firewall • Router • Core Switch • Distribution Switch • Access Switch • Cables

  4. Firewall • is simply a program or hardware device that filters the information coming through the Internet connection into your private network or computer system. • If an incoming packet of information is flagged by the filters, it is not allowed through.

  5. Firewall CISCO ASA 5510 BUN - K9 Series

  6. Router • A device that forwards data packets along networks. • is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP.

  7. Router CISCO 2911

  8. Core Switch • This layer is considered the backbone of the network and includes the high-end switches and high-speed cables such as fiber cables. • This layer of the network does not route traffic at the LAN. In addition, no packet manipulation is done by devices in this layer. • Rather, this layer is concerned with speed and ensures reliable delivery of packets.

  9. Distribution Switch • This layer includes LAN-based routers and layer 3 switches. • This layer ensures that packets are properly routed between subnets and VLANs in your enterprise. • This layer is also called the Workgroup layer.

  10. Core & Distribution Switch

  11. Access Switch • This layer includes hubs and switches. • This layer is also called the desktop layer because it focuses on connecting client nodes, such as workstations to the network. • This layer ensures that packets are delivered to end user computers.

  12. Access Switch

  13. Cables • RJ45 & Fiber

  14. Reference • http://www.ciscoguard.com/ASA-5510.asp • http://www.cisco.com/en/US/products/index.html • http://compnetworking.about.com/cs/lanvlanwan/g/bldef_lan.htm • http://searchnetworking.techtarget.com/definition/local-area-network-LAN

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