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Societal Impact – Class 11 Computer Science notes, important questions and MCQs

NCERT Class 11 Computer Science, chapter 11. Notes, key terms, important questions with answers and MCQs.

Chapter overview

Digital technology has a large impact on society. Every user leaves a digital footprint and must follow net etiquette, communication etiquette and social media etiquette. Data protection, intellectual property rights, licensing and the avoidance of cyber crime are important. Cyber safety, safe disposal of e-waste, and awareness of health concerns related to technology use are part of responsible digital citizenship. India's Information Technology Act, 2000 deals with cyber crimes.

Digital footprint, etiquette and IPR

A digital footprint is the trail of data left by online activity; it may be active (posts, emails) or passive (browsing data, cookies), and it is hard to erase.
Netiquette includes being ethical (no piracy, sharing only verified information), respectful (respecting privacy and diversity) and responsible (avoiding cyber bullying and not feeding trolls).
Intellectual property rights protect creations through copyright (creative works), patents (inventions) and trademarks (brand names and logos); plagiarism and copyright infringement are violations; licences such as Creative Commons and GPL allow sharing on stated terms, and free and open source software can be used and modified.

Cyber crime, safety and health

Cyber crimes include hacking, phishing (fraudulent messages to steal information), identity theft, ransomware (encrypting data and demanding payment), cyber bullying and online fraud; the IT Act, 2000 (amended 2008) provides legal remedies, and complaints can be reported on the national cyber crime portal.
Cyber safety measures include strong passwords, two-factor authentication, updated antivirus software, avoiding unknown links and attachments, secure (https) websites and caution on public Wi-Fi.
E-waste contains toxic substances like lead and mercury and should be disposed of through authorised recyclers (reduce, reuse, recycle); health concerns include eye strain, poor posture, and internet addiction, which can be prevented by ergonomic practices and balanced use.

Key terms

Digital footprint: the trail of data a person leaves online
Plagiarism: presenting someone else's work as one's own
Phishing: fraudulent attempts to obtain sensitive information through fake messages
Copyright: legal right of the creator over original creative work
E-waste: discarded electronic devices

Important questions with answers

What is a digital footprint?2 marks

A digital footprint is the record of data that a person leaves while using the internet. An active footprint includes data shared intentionally, such as posts and emails, while a passive footprint includes data collected without direct input, such as browsing history and location. It is difficult to delete, so users should be careful.

Distinguish between copyright, patent and trademark.3 marks

Copyright protects original creative works such as books, music, software and films. A patent protects an invention and gives the inventor exclusive rights to make and sell it for a limited period. A trademark protects a brand name, logo or symbol that distinguishes a company's products.

Explain common cyber crimes and the measures for cyber safety.5 marks

Cyber crimes are criminal activities carried out using computers and the internet. Hacking is gaining unauthorised access to a computer or network to steal or damage data. Phishing involves sending fraudulent emails, messages or websites that look genuine to trick people into revealing passwords, bank details or OTPs. Identity theft is the misuse of someone's personal information to impersonate them, often for financial fraud. Ransomware is malicious software that encrypts a victim's data and demands payment to unlock it. Cyber bullying is the use of digital platforms to harass, threaten or humiliate someone. Other crimes include online financial fraud, spreading viruses and violating privacy. In India, the Information Technology Act, 2000, amended in 2008, provides legal remedies, and victims can report cyber crimes on the national cyber crime reporting portal or the helpline 1930. Cyber safety measures include using strong and unique passwords and changing them regularly, enabling two-factor authentication, keeping the operating system and antivirus software updated, not clicking on unknown links or downloading suspicious attachments, using only secure websites with https for transactions, avoiding sensitive work on public Wi-Fi, logging out of shared computers, not sharing personal information or OTPs, adjusting privacy settings on social media, and keeping backups of important data.

Quick revision

Digital footprints and netiquette.
Data protection and IPR; licensing; FOSS.
Cyber crimes and the IT Act.
Cyber safety, e-waste and health concerns.

Exam tips

Remember: copyright protects works, patents protect inventions, trademarks protect brand names.
Never share OTPs or passwords; check for https before entering details.

Practice MCQs

The trail of data a person leaves online is called a
1. cookie
2. digital footprint
3. virus
4. firewall
Show answer
Answer: (b) digital footprint. It can be active or passive.
Presenting someone else's work as one's own is
1. licensing
2. encryption
3. plagiarism
4. patenting
Show answer
Answer: (c) plagiarism. It violates academic honesty.
The Indian law that deals with cyber crimes is the
1. Copyright Act
2. RTI Act
3. Consumer Protection Act only
4. Information Technology Act, 2000
Show answer
Answer: (d) Information Technology Act, 2000. It was amended in 2008.
Fake emails asking users to enter bank details on a look-alike site are an example of
1. hacking for good
2. licensing
3. plagiarism
4. phishing
Show answer
Answer: (d) phishing. They steal sensitive data.
A legal right that protects an invention is a
1. copyright
2. patent
3. trademark
4. licence
Show answer
Answer: (b) patent. It gives exclusive rights for a period.
Malware that locks a user's files and demands payment is
1. adware
2. firmware
3. freeware
4. ransomware
Show answer
Answer: (d) ransomware. Backups help recovery.
Which is a passive digital footprint
1. a social media post you write
2. browsing data collected through cookies
3. an email you send
4. a comment you publish
Show answer
Answer: (b) browsing data collected through cookies. It is collected without direct action.
Why should e-waste be given to authorised recyclers
1. it is worth nothing except as scrap
2. it has no recyclable parts
3. it can be burnt safely at home
4. it contains toxic substances like lead and mercury that harm health and the environment
Show answer
Answer: (d) it contains toxic substances like lead and mercury that harm health and the environment. Safe recycling recovers materials.

All chapters of Class 11 Computer Science

Written by Kundali IQ from standard, well-established facts to help with revision. This is not an official NCERT publication; always read your textbook too.