Network Basics
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This document defines key concepts related to computer networks and the Internet. It discusses the basic components of networks including servers, clients, nodes, LANs, WANs, and VPNs. It also covers topics like IP addressing, packets, connections, network topologies, and traffic control using switches, hubs, and routers. The goal is to provide an overview of fundamental networking concepts and components to help the reader understand how networks are built and connected.
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
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https://www.wask.co/ebooks/digital-marketing-trends-in-2024
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Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
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Skybuffer SAM4U tool for SAP license adoption
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
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Network Basics
- 1. THE INTERNET AND NETWORKS
- 2. NETWORKS • Server – a computer on the network that provides services to the other computers • Client – a computer on the network that a user interacts with • Node – a computer or other device connected to the network • LAN (Local Area Network) – Computers in one location connected together • WAN (Wide Area Network) – multiple LANs; geographically separated • VPN (Virtual Private Network) – a private connection to a LAN over the internet • Protocol – an agreed-upon standard for performing some function
- 4. LOCAL AREA NETWORK (LAN) (CLIENT/SERVER) Server Switch Scanner w/Server Print Server Client Client Client
- 5. WIDE AREA NETWORK (WAN)
- 6. VIRTUAL PRIVATE NETWORK (VPN)
- 8. IP ADDRESS • Example: 192.168.1.1 • Abbreviation for 32-bit number • Every website and every device on the internet has a unique IP address • Computers inside LANs usually have private IP addresses • Provides security – other computers on the internet can’t see them directly) • Conserves IP addresses • 10.0.0.0 – 10.255.255.255 • 172.16.0.0 – 17.31.255.255 • 192.168.0.0 – 192.168.255.255 • Static IPs never change • Dynamic IPs change periodically • Server can assign them (DCHP)
- 9. PACKETS DataHeader Trailer Destination Address Source Address Packet number Protocols Time to Live (TTL) Email Document Photo Web page End of packet Error Correction
- 12. TRAFFIC CONTROL – SWITCH • IDs each node by MAC address • Packets addressed to a specific node are sent only to that node • Broadcast packets accepted
- 13. TRAFFIC CONTROL – HUB • Gets packets from nodes • Sends to every other node • Nodes ignore what isn’t addressed to them
- 14. TRAFFIC CONTROL - ROUTER • Does not accept broadcast packets • Connects LAN to another network • Network address translation (NAT), firewall • Packets addressed to node not on the LAN are dropped
- 15. CONNECTIONS – CAT 5
- 19. LETS BUILD A NETWORK!