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BT-205
Unit 4 Notes

BT-205 Basic Computer Engineering Unit 4 Notes

Notes and important questions for unit 4: UNIT IV – Computer Networking and Security.

Unit 4 · Short notes UNIT IV – Computer Networking and Security Computer networking fundamentals: goals, ISO‑OSI model and layer functions · Internetworking concepts, networking devices, TCP/IP model · Internet, World Wide Web and e‑commerce basics · Computer security basics: viruses, worms, malware, Trojans, spyware · Security threats: money laundering, information theft, cyber‑pornography, email spoofing, DoS attacks, cyber‑stalking, logic bombs, hacking, spamming, defamation, pharming · Security measures: firewalls, best practices, computer ethics

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