Overview of networks
Download as PPTX, PDF0 likes67 views
This document provides an overview of computer networks, including definitions of common network types and topologies. It describes a computer network as a system that connects computers and devices. The three main network types are local area networks (LANs), which are smallest in size; metropolitan area networks (MANs), which can connect branches of an organization within a city; and wide area networks (WANs), which are the largest and can span states, countries, or continents. The document also outlines common network architectures like client-server and peer-to-peer, and defines key network devices including clients, servers, switches, and access points.
Overview of networks
- 2. Computer network A computer network is a system of interconnected computers and peripheral devices. For example, it may connect computers, printers, scanners and cameras.
- 3. TYPES OF NETWORKS LAN : Smallest network compared to the other two networks. MAN : Companies that have several branches within the Mumbai city such as banks, use a MAN. WAN : The largest network of all network types. Internet is the largest WAN in the world. WAN generally covers large distances such as states, countries or continents.
- 4. Network architecture CLIENT/SERVER NETWORK A client/server network is a network in which the shared files and applications are stored in the server but network users (clients) can still store files on their individual PCs. Peer-to-peer or P2P It is a network with all the nodes acting as both servers and clients. A PC can access files located on another PC and can also provide files to other PCs. Peer-to-peer CLIENT/SERVER
- 6. Access point Ethernet cable Fiber optical cable Wireless
- 7. Clients Computers that request or order information from a server Usually desktop computers with their own local storage and processing power Parts of a Network 1/4
- 8. Access point : is a networking hardware device that allows a Wi-Fi device to connect to a wired network. Parts of a Network 2/4
- 9. Switch : is a computer networking device that connects devices together on a computer network . A core switch, also known as a tandem switch and a backbone switch, is a high- capacity switch positioned in the physical core, or backbone, of a network. In a Local Area Network (LAN), a core switch serves to interconnect workgroup switches. Parts of a Network 3/4
- 10. Parts of a Network 4/4 Servers Computers that work behind the scenes to provide (serve) the resources requested by the clients . Two types Non-dedicated – provides many different services to its client computers such as file retrieval, printing, and emailing Dedicated – provides only one type of resource to its clients, such as printing File Server mail Server Active Directry Server
- 12. OSI Model
- 13. Thank you Any Question ?