1. By. Shafiq Ahmed Chachar Internet Applications E-mail Internet Relay Chat Telnet Search Engines E-Commerce File Transfer Protocol (FTP) Popular Uses of the Internet Popular Uses of the Internet

2. By. Shafiq Ahmed Chachar Basic Components in a Telecommunications Network Telecommunications Software Telecommunications Software 1 2 3 4 5 2 PCs, NCs, and Other Terminals Computers Telecommunications Channels and Media Telecommunications Processors

3. By. Shafiq Ahmed Chachar Wide Area Networks

4. By. Shafiq Ahmed Chachar Local Area Networks Network Server Network Server Shared Database and Software Packages Shared Printer PC Internetwork Processor to Other Networks

5. By. Shafiq Ahmed Chachar Other E-Business Networks Router Intranet Server Host System Intranet Server The Internet Fire wall Router Extranet

6. By. Shafiq Ahmed Chachar Client/Server Networks and Network Computing Network Server Network Server Host System Superserver Host System Superserver Client User Interface Application Processing Application Control Distributed Database Central database control Heavy duty processing Server NetPC Browser-based User Interface Web OS Application Software Application DBMS DB

7. By. Shafiq Ahmed Chachar Telecommunications Communication Media Twisted Pair Coaxial Cable Fiber Optics Terrestrial Microwave Communication Satellites Cellular Technologies Wireless LAN

8. By. Shafiq Ahmed Chachar Telecommunications Processors and Software Modems Multiplexers Internetwork Processors –Switches –Routers –Hubs –Gateways Fire walls Network Operating System Telecommunications Monitor Middleware Network Management Software

9. By. Shafiq Ahmed Chachar Network Topologies

10. By. Shafiq Ahmed Chachar Network Protocols: The OSI Architecture Application Layer Presentation Layer Session Layer Transport Layer Network Layer Data Link Layer Physical Layer Seven Layers of the OSI Communications Architecture

11. By. Shafiq Ahmed Chachar The Internet’s TCP/IP Application or Process Layer Internet Protocol (IP) Host-to-Host Transport Layer Network Interface Physical Layer Application Layer Presentation Layer Session Layer Transport Layer Network Layer Data Link Layer Physical Layer OSI Model

12. By. Shafiq Ahmed Chachar Chapter Summary (cont) The major components of any telecommunications network are: –Terminals, –Telecommunications processors, –Communication channels, –Computers, and –Telecommunications software. There are several basic types of telecomm networks, including wide area networks (WANs) and local area networks (LANs).

13. By. Shafiq Ahmed Chachar Chapter Summary (cont) Key telecommunications network alternatives include telecommunications media, processors, software, channels, and architectures.