WELCOMEtoCOMP421CMPET401.pptVIP

WELCOME to COMP 421 /CMPET 401 COMMUNICATIONS and NETWORKING Class 1 COURSE OUTLINE Overview of Communications Introduction Protocols and Architecture Data Communications Data Transmission Transmission Media Data Encoding Data Link Control Multiplexing COURSE OUTLINE (continued) Local and Wide Area Networks LAN WAN Protocols Switching Techniques Bridges and Routers High Speed Networks Internetworking Internet Resources Network Operating Systems TELECOMMUNICATIONS TELECOMMUNICATIONS TELECOMMUNICATIONS Communication Tasks Communication Tasks Include: Transmission System Utilization Interfacing Signal Generation Synchronization Exchange Management Error Correction and Detection Flow Control Addressing Routing Recovery Message Formatting Security Network Management Data Communication Networking Networks are used to link devices together Distant - Network is called a Wide Area Network (WAN) Circuit Switched Packet Switched Frame Relay ATM Public Switched Telephone Network (PSTN) Leased lines Public switched data network (PSDN) Integrated services digital network (ISDN) Local - Network is called a Local Area Network (LAN) Intermediate - Network is called a Metropolitan Area Network (MAN) PSTN LAN Leased lines PSDN ISDN Standards Standards Standards Standards An Example – 802.11 Wireless LAN TOPOLOGIES TOPOLOGY Computer Networks PANs MANs LANs (Local Area Networks) WANs (Wide Area Networks) WAN WAN Computer Networks Network Software Understanding Services and Protocols Protocols Protocols Protocols Network Software - Protocols Network Software - Protocols Network Software - Protocols The benefits of Layered Protocols More Benefits of Layered Protocols Network Software - Interfaces Services The 3 Layer Model A Simple Architecture Simplified Architecture PDUs Network Operation Network Operation Operation of Protocol Architecture Network Operation The components of a basic Network Why establish a computer network Distributed comp