Networks, Topology, & ArchitectureNetworks, Topology, & Architecture

Mrs. WilsonDreamweaver 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 e-mail

Types of Networks

Networks are classified by their size, architecture, and topology TopologyTopology: The physical or logical

arrangement of nodes on a network

LAN—Local Area NetworkWAN—Wide Area Network

MAN—Metropolitan Area NetworkHAN—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 Topologies1. Bus Topology

Single Central Cable, called the bus or backbone to attach each node directly

Three Common Topologies2. 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 Topologies3. 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 NetizenRemember 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.