Computer Network and Internet
Computer Network and Internet
Unit 1: Introduction to Computer Network
Definition of a Computer Network, concept of Network
Components of a computer network, use of computer networks.
Simplex, Half duplex & Full duplex.
Components of computer networks-files server, workstation.
Network devices-hub, repeater, bridge, router, gateway.
Classification of computer network-
Geographical spread (LAN,WAN, MAN).
Unit 2: Data Transmission & Topologies
Data transmission- Serial and parallel transmission.
Data communication- Analog and digital transmission.
Transmission Medias-
- I) Guided media –
Twisted pair
Coaxial cable
Optical fibers.
- II) Unguided media-
Radio waves
Microwaves
Infrared.
Topologies- bus, star, ring, mesh, tree.
Unit 3: OSI Model and TCP/IP
Introduction- Concept of Error detection & control code.
Flow control- Stop and Wait protocol,
Sliding window protocol.
Routing & Routing algorithms-shortest path, flooding.
Switching techniques- circuit, packet & message switching, Connection oriented and connectionless services. OSI
Model-Introduction, Working and Functions of – Physical layer,
Data Link Layer, Network Layer, Transport Layer, Session
Layer, Presentation Layer, Application Layer.
TCP/IP Model-
Introduction, Working and Functions of – Process/Application
layer, Host to Host/Transport layer, Internet layer, Network access/Link layer.
Unit 4: Internet and Web
Introduction to internet, Evolution of Internet
Difference in Internet, Intranet & Extranet.
Domain Name System (DNS).
Web browsers & its features, Search engines, Netiquette
Introduction to Web 3.0, Advantages of Web 3.0.
Internet security threats and security solutions.