Lecture Basic network management: Chapter 3 - Trung tâm Athena

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Lecture Basic network management: Chapter 3 - Network computer. After studying this chapter you will be able to understand: What is a Network? Why we use a Network? Advantages of LAN Types of Network.

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Nội dung Text: Lecture Basic network management: Chapter 3 - Trung tâm Athena

Chapter 3: Network Computer ATHENA
Objective  What is a Network?  Why we use a Network?  Advantages of LAN  Types of Network ATHENA
What is a Network? •A group of computers and other devices connected together is called a network •Networking is the concept of sharing resources and services ATHENA
Example a Network Figure 1-1 What is a Local Area Network? ATHENA
Why we use a Network? • To avoid duplication of equipment and resources • Be cost effective • To communicate efficiently • To improve management 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 autorecognition and autoconfiguration is called plugandplay compatibility • With plusandplay, 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 ATHENA
LAN Support New Applications  Support New Applications • We all use email to communicate and LANs can make that process faster and easier. • Many LAN support voicemail, video conferencing, and distance learning ATHENA
LAN Support New Applications Support New Applications ATHENA
Network Models Network categories – ServerBased network – PeertoPeer network ATHENA
ServerBased Network ATHENA
ServerBased Network A serverbased network consist of a group of useroriented PCs (call clients) that issue requests to a server Specialized Servers: File server, print Server, Database Servers ATHENA
ServerBased Network ATHENA
PeertoPeer Network  A peertopeer 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 toPeer Network ATHENA
PeertoPeer Network ATHENA
Peertopeer Network • Where PeertoPeer is appropriate? – Fewer than 10 users – Security is no need – User located in same general area – Organization will have limited growth in the future ATHENA