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Computer Science: 53 short revision clips

One idea per clip, with the answer written out underneath. Each clip links back to the full Computer Science lesson it came from.

List of things that leave a trace online: posts, searches, orders, payments, location.Is a deleted post really gone?41 secTwo columns comparing active footprints you post and passive footprints collected quietly.Which type is a review you write?40 secList showing how projects help and rude posts harm in admissions and jobs.Do employers really search names online?40 secFour steps to reduce a digital footprint, listed on screen.Why delete unused accounts?42 secList of good digital citizen habits: safe, responsible, kind.What does a digital citizen do before forwarding?38 secEmail etiquette rules listed: subject, greeting, no all caps, no late messages.What does ALL CAPS look like online?39 secSocial media etiquette rules on screen: pause, ask, verify, report.Why not post in anger?39 secFour rules for respecting others online, listed on screen.Can you share a friend's chat screenshot?39 secFake web addresses like g00gle.com next to warning signs of unsafe sites.Does a padlock mean a site is safe?39 secSteps to protect identity online: unique passwords, no OTP sharing, log out.What is identity theft?39 secTable of confidential details and who may see them.Can you share your Aadhaar number in a chat?38 secSafe and unsafe post examples, with social network safety rules.Why not post a live holiday update?40 secWeak passwords like password123 next to strong ones like blue-kite-rice-lamp.Is Riya2009 strong?41 secPassword manager vault with one master password and generated strong passwords.How many passwords must you remember?41 secThree authentication factors: password, phone code, fingerprint.What are the three authentication factors?40 secApp permission list with unnecessary permissions denied.Does a torch app need your contacts?40 secTable of malware types: virus, worm, trojan, ransomware with one line each.Which malware spreads without you opening anything?42 secList of malware infection signs shown on a phone screen.Pop-ups appear with no browser open. What does that suggest?40 secFour malware removal steps in order on screen.What is the first step?39 secFour malware prevention habits listed on screen.Why do updates matter?39 secTwo attacks compared: hacking without permission and eavesdropping on a network.Is white hat hacking legal?37 secFraud bank email with odd domain, Dear Customer greeting and OTP request marked.Do real banks ask for an OTP?41 secFour steps for online bullying: do not reply, screenshot, block, report.Should you reply to a troll?41 secDiagram of a flooded server and a password guessing attack.What does a DoS attack do?38 secReporting options in India: 1930 helpline and cybercrime.gov.in.Which helpline is for online money fraud in India?36 secFirewall drawn as a gate checking packets and blocking some.What does a firewall check?42 secAnti-virus signature list updating and a patch closing a weak point.Why must anti-virus be updated?43 secSymmetric one shared key compared with asymmetric public and private keys.Which is faster?42 secBrowser address bar with padlock, explaining HTTPS, TLS and certificates.Does the padlock prove the site is honest?46 secThree IPR rights with one example each: song, filter, logo.How long does a patent last?41 secSteps to avoid plagiarism: cite, quote, paraphrase with credit.Is changing a few words enough?43 secTypes of infringement: piracy, code copying, fake brands, cloned inventions.Is downloading cracked software legal?40 secData protection laws listed: DPDP Act 2023 in India and GDPR in Europe.Which Indian law protects personal data?40 secThree software types compared: proprietary, freeware and open source.Does free software mean free of cost?40 secLicences listed: GPL copyleft, Apache permissive, Creative Commons BY.Which licence is copyleft?43 secReasons licences matter for students, listed on screen.Can you use cracked software for a project?40 secOpen source tools listed with the paid software they can replace.What can replace a paid image editor?42 secTimeline of the IT Act: passed 2000, amended 2008.When was the IT Act passed?40 secIT Act sections 66, 66C and 66D with their offences.Which section is hacking?41 secReporting steps: screenshots, call 1930, file at cybercrime.gov.in.Which number is for online money fraud?41 secRights and matching responsibilities listed side by side.Since when is privacy a fundamental right in India?41 secDrawer of old chargers and phones labelled as e-waste.Is a dead battery e-waste?40 secToxic metals in e-waste and the organs each one harms.Which metal mainly harms children's brains?41 secThree Rs in order: reduce, reuse, recycle.Which comes first, reuse or recycle?41 secSafe e-waste disposal routes in India, listed on screen.Why not give e-waste to any scrap dealer?40 secThree screen health problems with their fixes.What is the 20-20-20 rule?39 secPoints on the computing gender gap and women pioneers.Who wrote an early computer program?40 secAssistive technology matched to needs: screen reader, magnifier, captions.What does a screen reader do?40 sec
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Full Computer Science lessonsAll KwickClips

Disclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy

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