Networks, Topology, & Architecture Mrs. Wilson Dreamweaver for College & Business

What is a Network? Combination of hardware and software that allows computers to exchange data and share software and devices. Used by schools, businesses, and home users as well.

Why a Network? Allows sharing Reduces costs (i.e., printers) Offers security Simplifies file management Provides

Types of Networks Networks are classified by their size, architecture, and topology Topology Topology: The physical or logical arrangement of nodes on a network LAN—Local Area Network WAN—Wide Area Network MAN—Metropolitan Area Network HAN—Home Area Network

Cross-Platform Connectivity An issue involved with using so many different types of PCs Ability of one type of PC to link and share data with another For example: MACs and PCs or PCs and Laptops

Network Interface Card (NIC) A circuit that goes into a computer allowing you to access a network!

Network Architecture Includes the types of computers on the network and how the resources are handled. Two common models:  Peer-to-Peer: Each computer is equal  Client-Server: Group of computers, called clients, connected to a server

Topology and Nodes Topology Refers to the arrangement of the nodes on a network Nodes A location on the network with a device capable of processing information, such as a computer or a printer

Three Common Topologies 1. Bus Topology Single Central Cable, called the bus or backbone to attach each node directly

Three Common Topologies 2. Star Topology Each node is attached to a hub, which is a device that joins communication lines at a central location on the network

Three Common Topologies 3. Ring Topology Each node is connected to form a closed loop. This type covers greater distance.

Transmission Media, Ethernet, and Wi-Fi

Netiquette Rules for being a Good Netizen Remember to be a good citizen of cyberspace. Remember the human Adhere to the same standards of behavior on-line that you follow in real life. Know where you are in cyberspace. Respect other people's time and bandwidth. Make yourself look good on-line. Share expert knowledge. Help keep flames under control. Respect other people's privacy. Don't abuse your power. Be forgiving of other people's mistakes.