Naresh Kumar PGT CS KV CRPF Avadi Computer Network Naresh Kumar PGT CS KV CRPF Avadi

Computer Network – Naresh Kumar Why Computer Network ??? Stand alone Computer …. An interconnected system of things or people-Network FOR WHAT ??? Computer Network – Naresh Kumar

Something interesting from Computer Network ??? Resource Sharing Reliability No distance Cost Reduction Efficient Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Internet History ?? Developed by ARPA in 1969 ?? ARPANET for academic research ?? Grow up explosively in 1985 ?? MILNET for American military DARPA research program in 1973 Connect a variety of computer networks so that they could function as a single, reliable network Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Switching Data Data units must be switched through the various intermediate devices until they are delivered to their destination… Computer Network – Naresh Kumar

Communication network Circuit Switch -Telephone network Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Data network ?? Packet Switching –LAN, WAN, MAN Computer Network – Naresh Kumar

Data Communication Terminologies Channel-It is the medium used to carry information or data from one point to another. Baud-It is the measurement for the information carrying capacity of a communication channel. It is synonymous with bps(bits per second). Bandwidth-It refers to the difference between the highest and lowest frequencies of a transmission channel. Data Transfer Rate- The speed of data transfer from one charnel to another. Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Transmission Media Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Twisted Pair Cable Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Coaxial Cable Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Optical Fiber Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Network Devices Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Modem Computer Network – Naresh Kumar

Computer Network – Naresh Kumar RJ45 Connector Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Router Computer Network – Naresh Kumar

Ethernet Card, Hub & Switch Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Gateway Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Topologies Computer Network – Naresh Kumar

Computer Network – Naresh Kumar BUS Topology Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Star Topology Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Tree Topology Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Mash Topology Computer Network – Naresh Kumar

Computer Network – Naresh Kumar LAN Computer Network – Naresh Kumar

Computer Network – Naresh Kumar WAN Computer Network – Naresh Kumar

Computer Network – Naresh Kumar MAN Computer Network – Naresh Kumar

OSI Model and Protocols Computer Network – Naresh Kumar

Computer Network – Naresh Kumar TCP/IP Suite Computer Network – Naresh Kumar

Computer Network – Naresh Kumar IP (Internet Protocol) ?? LAN-to-LAN, Node-to-Node transmission ?? IP Address (140.114.71.235) ?? Network layer ?? TCP (Transmission Control Protocol) ?? End-to-End Communication ?? Reliable data transmission ?? Transport layer Computer Network – Naresh Kumar

Computer Network – Naresh Kumar Thank You… Computer Network – Naresh Kumar