ATHENA Chapter 3: Network Computer ATHENA Objective ~ What is a Network? ~ Why we use a Network? ~ Advantages of LAN ~ Types of Network ATHENA • A group of computers and other devices connected together is called a network • Networking is the concept of sharing resources and services What is a Network? ATHENA Figure 1-1 What is a Local Area Network? Example a Network ATHENA • To avoid duplication of equipment and resources • Be cost effective • To communicate efficiently • To improve management Why we use a Network? ATHENA LAN Overview ~A Local Area Network (LAN) is a group of computers and network communication devices interconnected within a geographically limited area. ~LAN provide companies with time and money saving ~LAN is simple, inexpensive, support many type of protocols ATHENA Setup a Local Area Network ~ Simple Connections • Installing an adapter card to connect computer on a LAN was a complicated process. • The software accompanying a LAN adapter is automatically configured to allow the computer to begin communicating immediately ATHENA Setup a Local Area Network ~ Simple Connections • This auto-recognition and auto-configuration is called plug-and-play compatibility • With plus-and-play, the software will ask some questions so that it can define the parameters required to get your PC communicating with other PCs on the network. ATHENA Setup a Local Area Network ATHENA LAN Supports Multiple Protocols ~ Supports Multiple Protocols • A protocol is method or procedure used for the exchange of information between two communications devices • Most important protocol – Novell Netware – AppleTalk – TCP/IP – OSI protocol [...]... learning ATHENA LAN Support New Applications Support New Applications ATHENA Network Models Network categories – Server-Based network – Peer-to-Peer network ATHENA Server-Based Network ATHENA Server-Based Network A server-based network consist of a group of user-oriented PCs (call clients) that issue requests to a server Specialized Servers: File server, print Server, Database Servers ATHENA Server-Based Network. .. Networks Classification LAN: Local Area Network WAN: Wide Area Network MAN: Metropolitan Area Network GAN: Global Area Network ATHENA Networks Classification (2) Local Area Network ATHENA Networks Classification (3) Wide Area Network ATHENA Summary • • • • ATHENA Network overview Types of network LAN overview Some advantages of LAN ... server, print Server, Database Servers ATHENA Server-Based Network ATHENA Peer-to-Peer Network A peer-to-peer network consist of a group of PCs that operate as equal Each PC is called a peer and act as a client or server User of each computer determines what is shared ATHENA Peer -to-Peer Network ATHENA Peer-to-Peer Network ATHENA Peer-to-peer Network • Where Peer-to-Peer is appropriate? – Fewer than 10... future ATHENA Combination Networks Include peer-to-peer and server based networking Server based operating system is responsible for sharing the major applications and data Clients can run Win NT workstation, Win 95, Win 98, Win Me, Win XP They can access resources on server and share their resources ATHENA Networks Classification LAN: Local Area Network WAN: Wide Area Network MAN: Metropolitan Area Network . ATHENA Chapter 3: Network Computer ATHENA Objective ~ What is a Network? ~ Why we use a Network? ~ Advantages of LAN ~ Types of Network ATHENA •. learning ATHENA LAN Support New Applications ~Support New Applications ATHENA Network Models Network categories –Server-Based network –Peer-to-Peer network ATHENA Server-Based