Complete RGPV exam-oriented page covering computer networking, goals of networking, ISO-OSI model, TCP/IP model, internetworking, networking devices, internet, WWW, E-commerce, computer security, malware, cyber attacks, firewall, cyber laws and ethics.
Basic Computer Engineering Unit 4 important topics
Easy revision notes for RGPV exam
Computer network is a collection of interconnected computers used to share resources and information. Its goals are resource sharing, communication, data sharing, reliability and cost reduction.
LAN covers a small area, MAN covers a city area and WAN covers a large geographical area. These networks help in communication and data sharing.
OSI model is a seven-layer reference model developed by ISO. Its layers are Physical, Data Link, Network, Transport, Session, Presentation and Application.
TCP/IP is a communication protocol suite used on the internet. Its layers are Network Access, Internet, Transport and Application.
Hub connects multiple devices in a network. It is a broadcast device and works on the physical layer.
Switch forwards data to a specific device. It gives faster communication and reduces network collisions.
Router connects different networks and performs routing and packet forwarding. It is one of the most important networking devices.
Internet is a worldwide network of networks. WWW is a collection of web pages accessed through internet using browser, server and URL.
E-commerce means buying and selling products online. It provides global business, 24×7 service and fast transactions.
Malware means malicious software harmful to systems. Examples include virus, worm, trojan horse and spyware.
Cyber attacks include hacking, spamming, email spoofing, denial of service, cyber stalking, phishing, pharming, logic bombs and cyber defamation.
Firewall is a security system that controls network traffic. It blocks unauthorized access and monitors incoming and outgoing traffic.
Must remember points for exam
High chance RGPV exam questions
Repeated questions from uploaded RGPV PYQ papers
| Topic | Repeated Questions | Frequency | Priority |
|---|---|---|---|
| OSI Model | Seven layers, functions of each layer and diagram | Very High | ★★★★★ |
| TCP/IP Model | TCP/IP layers, diagram and comparison with OSI model | Very High | ★★★★★ |
| Cyber Security & Attacks | Cyber attacks, hacking, spoofing, phishing, DoS and cyber stalking | Very High | ★★★★★ |
| Firewall | Firewall functions and security measures | High | ★★★★ |
| Networking Devices | Hub, switch, router, gateway, bridge and modem | High | ★★★★ |
| Internet & WWW | Internet, World Wide Web, browser, server and URL | High | ★★★★ |
| Virus & Malware | Virus, worm, trojan, spyware and malware prevention | High | ★★★★ |
| Cyber Laws | Computer ethics, cyber laws and internet fraud | Medium | ★★★ |
| E-Commerce | Applications, advantages and E-business use | Medium | ★★★ |
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Common student doubts
OSI model, TCP/IP model, cyber security, cyber attacks, firewall, networking devices and internet/WWW are most important.
OSI model diagram, TCP/IP model diagram and networking device diagrams like hub, switch and router are important.
OSI vs TCP/IP, hub vs switch, virus vs worm, hacker vs cracker and LAN vs WAN are important.