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NCERT Solutions

Societal Impact

CBSE · Class 11 · Computer Science

NCERT Solutions for Societal Impact — CBSE Class 11 Computer Science.

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EXERCISE

1After practicals, Atharv left the computer laboratory but forgot to sign off from his email account. Later, his classmate Revaan started using the same computer. He is now logged in as Atharv. He sends inflammatory email messages to few of his classmates using Atharv's email account. Revaan's activity is an example of which of the following cyber crime? Justify your answer.Show solution
Revaan is sending inflammatory email messages to classmates to upset or harass them. This is cyber bullying, because it is an insulting, intimidating, or abusive online behaviour aimed at hurting others. He is also misusing Atharv's account, but the act described is the bullying itself.

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2Rishika found a crumpled paper under her desk. She picked it up and opened it. It contained some text which was struck off thrice. But she could still figure out easily that the struck off text was the email ID and password of Garvit, her classmate. What is ethically correct for Rishika to do?Show solution
Rishika should act responsibly and ethically by informing Garvit immediately. This will help him change his password and protect his account. She should not share or use the password.

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3Suhana is down with fever. So she decided not to go to school tomorrow. Next day, in the evening she called up her classmate, Shaurya and enquiredShow solution
Shaurya downloaded a video clip from the Internet, edited it, and sent it as if it were prepared by him. Using someone else's copyrighted work without permission and presenting it as one's own is copyright infringement. It is also related to plagiarism, but the option given that best fits the act described is copyright infringement.

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4After a fight with your friend, you did the following activities. Which of these activities is not an example of cyber bullying?Show solution
Sending an apology message is not cyber bullying. The other two actions are harmful and intended to threaten or embarrass, so they are examples of cyber bullying.

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5Sourabh has to prepare a project on “Digital India Initiatives”. He decides to get information from the Internet. He downloads three web pages (webpage 1, webpage 2, webpage 3) containing information on Digital India Initiatives. Which of the following steps taken by Sourabh is an example of plagiarism or copyright infringement. Give justification in support of your answer.Show solution
Option (b) is the example of copyright infringement or plagiarism risk, because Sourabh is using downloaded images in his project. The chapter says that using another person's work without permission, even if it is on the Internet, can violate copyright unless the copyright status allows it. Rephrasing in one's own words in (a) is not plagiarism, and (c) could be acceptable only if the icon is free to use or properly licensed.

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6Match the following:Show solution
The correct matches are:

- Plagiarism → copying and pasting information from the Internet into a report and presenting it as one's own work
- Hacking → breaking into computers to read private emails and other files
- Credit card fraud → fakers offering rewards or prizes to collect personal information such as bank account details
- Digital Foot Print → the trail created when a person uses the Internet

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7You got the below shown SMS from your bank querying a recent transaction. Answer the following:Show solution
This is a phishing/fraud email. The message creates urgency and asks for sensitive information by pretending to be from the bank. The correct response is to not trust the SMS blindly and verify through the bank's official contact channels.

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7(a)Will you SMS your pin number to the given contact number?Show solution
You should never SMS your PIN to an unknown number. The chapter warns against sharing credentials and says sensitive information should be protected.

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7(b)Will you call the bank helpline number to recheck the validity of the SMS received?Show solution
Yes. You should call the bank helpline number to verify the message using the bank's official contact details. This is the safe way to check whether the SMS is genuine.

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8Preeti celebrated her birthday with her family. She was excited to share the moments with her friend Himanshu. She uploaded selected images of her birthday party on a social networking site so that Himanshu can see them. After few days, Preeti had a fight with Himanshu. Next morning, she deleted her birthday photographs from that social networking site, so that Himanshu cannot access them. Later in the evening, to her surprise, she saw that one of the images which she had already deleted from the social networking site was available with their common friend Gayatri. She hurriedly enquired Gayatri “Where did you get this picture from?”. Gayatri replied “Himanshu forwarded this image few minutes back”.

Help Preeti to get answers for the following questions. Give justification for your answers so that Preeti can understand it clearly.Show solution
Preeti can understand that once an image is uploaded on social media, it may be copied, forwarded, or saved by others before deletion. So even after she deletes it from her account, someone who already downloaded or forwarded it can still keep and share it.

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8(a)How could Himanshu access an image which I had already deleted?Show solution
Himanshu could access the image because it had already been viewed, downloaded, or forwarded before Preeti deleted it. Deleting it from her account does not remove every copy from the Internet or from other users' devices.

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8(b)Can anybody else also access these deleted images?Show solution
Yes, other people may also access it if they had already saved, forwarded, or copied it earlier. The chapter says that once a data trail is created, there is no guarantee that it will be fully eliminated from the Internet.

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8(c)Had these images not been deleted from my digital footprint?Show solution
No, it had not fully disappeared from her digital footprint. The chapter explains that even after deleting online content, the digital footprints still remain on servers or on other devices, so complete permanent deletion is not guaranteed.

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9The school offers wireless facility (wifi) to the Computer Science students of Class XI. For communication, the network security staff of the school have a registered URL schoolwifi.edu. On 17 September 2017, the following email was mass distributed to all the Computer Science students of Class XI. The email claimed that the password of the students was about to expire. Instructions were given to go to URL to renew their password within 24 hours.Show solution
The email is suspicious because it asks students to click a URL and renew a password within 24 hours. Such a message can be fake and is likely trying to obtain login details through a false link.

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9(a)Do you find any discrepancy in this email?Show solution
Yes, there is a discrepancy. The email contains a suspicious request to renew the password through a URL, which is a common sign of a fake message.

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9(b)What will happen if the student will click on the given URL?Show solution
If the student clicks the URL, they may be directed to a fake website that looks real and can steal the password or other details.

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9(c)Is the email an example of cyber crime? If yes, then specify which type of cyber crime is it. Justify your answer.Show solution
Yes. It is an example of phishing. The email tries to trick students into giving their password by pretending to be an official school message. The chapter defines phishing as fake websites or emails that look authentic and collect sensitive personal details.

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10You are planning to go for a vacation. You surfed the Internet to get answers for the following queries:
a) Weather conditions
b) Availability of air tickets and fares
c) Places to visit
d) Best hotel deals
Which of your above mentioned actions might have created a digital footprint?Show solution
All the actions listed can create a digital footprint because each Internet search or online query leaves a data trail.

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11How would you recognise if one of your friends is being cyber bullied?Show solution
To recognise cyber bullying, we look for online signs such as threatening messages, embarrassing posts, repeated rumours, or posting personal information to harass the person.

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12Write the differences between the following-
a) Copyrights and Patents
12(b)Plagiarism and Copyright infringement
12(c)Non-ethical hacking and Ethical hacking
12(d)Active and Passive footprints
12(e)Free software and Free and open source software
13If you plan to use a short text from an article on the web, what steps must you take in order to credit the sources used?
14When you search online for pictures, how will you find pictures that are available in the free public domain. How can those pictures be used in your project without copyright violations?
15Describe why it is important to secure your wireless router at home. Search the Internet to find the rules to create a reasonably secure password. Create an imaginary password for your home router. Will you share your password for home router with following people. Justify your answer.
a) Parents
b) Friends
c) Neighbours
d) Home Tutors
16List down the steps you need to take in order to ensure
a) your computer is in good working condition for a longer time.
b) smart and safe Internet surfing.
17What is data privacy? Websites that you visit collect what type of information about you?
18In the computer science class, Sunil and Jagdish were assigned the following task by their teacher.
a) Sunil was asked to find information about “India, a Nuclear power”. He was asked to use Google Chrome browser and prepare his report using Google Docs.
b) Jagdish was asked to find information about “Digital India”. He was asked to use Mozilla Firefox browser and prepare his report using Libre Office Writer.

What is the difference between technologies used by Sunil and Jagdish?
19Cite examples depicting that you were a victim of following cyber crime. Also, cite provisions in IT Act to deal with such a cyber crime.
a) Identity theft
b) Credit card account theft
20Neerja is a student of Class XI. She has opted for Computer Science. Neerja prepared the project assigned to her. She mailed it to her teacher. The snapshot of that email is shown below.
20(a)Subject of the mail
20(b)Formal greeting
20(c)Self-explanatory terms
20(d)Identity of the sender
20(e)Regards
21Sumit got good marks in all the subjects. His father gifted him a laptop. He would like to make Sumit aware of health hazards associated with inappropriate and excessive use of laptop. Help his father to list the points which he should discuss with Sumit.

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Frequently Asked Questions

What are the important topics in Societal Impact for CBSE Class 11 Computer Science?
Societal Impact covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Societal Impact — CBSE Class 11 Computer Science?
Understand the core concepts first, then work through the 57 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
Where can I get free NCERT Solutions for Societal Impact Class 11 Computer Science?
This page has free step-by-step NCERT Solutions for every exercise question in Societal Impact (CBSE Class 11 Computer Science) — written the way examiners award marks: given, formula, working, answer.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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