Page 496 - Computer Science V2.0 Class 11

12. Write the differences between the following:
a. Copyrights and Patents
b. Plagiarism and Copyright infringement
c. Non-ethical hacking and Ethical hacking
d. Active and Passive footprints
e. Free software and Free and open source software
Ans. a. Refer to 15.6.1 Intellectual Property Rights (IPR), Copyright, Patent
b. Refer to 15.6.2 Violation of IPR, Plagiarism, Copyright Infringement
c. Refer to 15.3.1 Hacking
d. Refer to 15.1 Digital Footprints
e. Free Software means the software is freely accessible and can be freely used, changed, improved, copied and distributed to others.
No payments are needed to be made for free software.
Free and Open Source Software: refer to a software which is both free software as well as open source software. An open source
means, it source code is also available.
13. If 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?
Ans. Following steps need to be taken
i. Determine if you need the permission to use the desired piece of work.
ii. Identify the owner of the article.
iii. Identify the rights needed to use it.
iv. Contact the owner and negotiate whether payment is required.
v. Get your permission agreement in writing.
14. When 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?
Ans. To find pictures available in the free public domain, use websites like Unsplash, Pixabay, or Wikimedia Commons. Ensure images have
a Creative Commons Zero (CC0) license, allowing for free use. Verify licensing terms on each platform. Use images responsibly, giving
proper attribution if required, and avoid any use that violates the license terms.
15. Describe 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
Ans. WiFi router security is important otherwise any one can use our wifi to commit fraud or cybercrimes.
Rules to Create Secure Password:
At least 8 characters—the more characters, the better.
A mixture of both uppercase and lowercase letters.
A mixture of letters and numbers.
Inclusion of at least one special character, e.g., ! @ # ? ] Note: do not use < or > in your password, as both can cause problems in Web
browsers.
We shall share the password with parents only.
Never share your wifi password to Friends, Neighbours and Home Tutors. There is possibilities that someone else also come to know your
wifi password. If you shared in emergency, then don’t forget to change the password.
16. List 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.
Ans. a. Device Safety: Ensures Good Health of a Computer System:
i. Regularly clean it to keep the dust off. Use a liquid solution specifically formulated for the cleaning of electronic screens.
ii. Wipe monitor’s screen often using the regular microfibre soft cloth (the one used for spectacles).
iii. Keep it away from direct heat, sunlight and put it in a room with enough ventilation for air circulation.

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